51
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Wu K, Wang D, Fu Q, Xu T, Xiong Q, Peera SG, Liu C. Co/Ce-MOF-Derived Oxygen Electrode Bifunctional Catalyst for Rechargeable Zinc-Air Batteries. Inorg Chem 2024; 63:11135-11145. [PMID: 38829208 DOI: 10.1021/acs.inorgchem.4c00787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Improving the practicality of rechargeable zinc-air batteries relies heavily on the development of oxygen electrode catalysts that are low-cost, durable, and highly efficient in performing dual functions. In the present study, a catalyst with atomic Ce and Co distribution on a nitrogen-doped carbon substrate was prepared by doping the rare earth elements Ce and Co into a metal-organic framework precursor. Rare earth element Ce, known for its unique structure and excellent oxygen affinity, was utilized to regulate the catalytic activity. The catalyst prepared in this study demonstrated an exceptional electrocatalytic performance. At a current density of 10 mA cm-2, the catalyst exhibited an overpotential of 340 mV for the oxygen evolution reaction (OER), which was lower than that of commercial IrO2 (370 mV), while achieving a half-wave potential of 0.79 V for the process of oxygen reduction reaction (ORR), exhibiting a similar level of effectiveness as commercially accessible Pt/C catalysts (0.8 V). The catalyst's porous structure, interconnected three-dimensional carbon network, and large specific surface area are the factors contributing to the significant improvement in catalytic performance. Furthermore, in comparison to commercial Pt/C+IrO2, the catalyst exhibited good cycling stability and high efficiency in rechargeable zinc-air batteries.
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Affiliation(s)
- Kang Wu
- School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Daomiao Wang
- School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Qiming Fu
- School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Tao Xu
- School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Qiang Xiong
- School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
| | - Shaik Gouse Peera
- Department of Environmental Engineering, Keimyung University, 1095, Dalseo-gu, Daegu 42601, Republic of Korea
| | - Chao Liu
- School of Materials Science and Engineering, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, People's Republic of China
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52
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Yang K, Ma H, Ren R, Xiao L, Jiang W, Xie Y, Wang G, Lu J, Zhuang L. Multidimensional Electrochemistry Decodes the Operando Mechanism of Hydrogen Oxidation. Angew Chem Int Ed Engl 2024; 63:e202318389. [PMID: 38613385 DOI: 10.1002/anie.202318389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/14/2024]
Abstract
Being an efficient approach to the utilization of hydrogen energy, the hydrogen oxidation reaction (HOR) is of particular significance in the current carbon-neutrality time. Yet the mechanistic picture of the HOR is still blurred, mostly because the elemental steps of this reaction are rapid and highly entangled, especially when deviating from the thermodynamic equilibrium state. Here we report a strategy for decoding the HOR mechanism under operando conditions. In addition to the wide-potential-range I-V curves obtained using gas diffusion electrodes, we have applied the AC impedance spectroscopy to provide independent and complementary kinetic information. Combining multidimensional data sources has enabled us to fit, in mathematical rigor, the core kinetic parameter set in a 5-D data space. The reaction rate of the three elemental steps (Tafel, Heyrovsky, and Volmer reactions), as a function of the overpotential, can thus be distilled individually. Such an undocumented kinetic picture unravels, in detail, how the HOR is controlled by the elemental steps on polarization. For instance, at low polarization region, the Heyrovsky reaction is relatively slow and can be ignored; but at high polarization region, the Heyrovsky reaction will surpass the Tafel reaction. Additionally, the Volmer reaction has been the fastest within overpotentials of interest. Our findings not only offer a better understanding of the HOR mechanism, but also lay the foundation for the development of improved hydrogen energy utilization systems.
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Affiliation(s)
- Kaicong Yang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Hualong Ma
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Renjie Ren
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Li Xiao
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Wenyong Jiang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Yu Xie
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Gongwei Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Juntao Lu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
| | - Lin Zhuang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China
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53
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Zeng JS, Cosner EL, Delgado-Kukuczka SP, Jiang C, Adams JS, Román-Leshkov Y, Manthiram K. Electrifying Hydroformylation Catalysts Exposes Voltage-Driven C-C Bond Formation. J Am Chem Soc 2024; 146:16521-16530. [PMID: 38856020 PMCID: PMC11191585 DOI: 10.1021/jacs.4c02992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/11/2024]
Abstract
Electrochemical reactions can access a significant range of driving forces under operationally mild conditions and are thus envisioned to play a key role in decarbonizing chemical manufacturing. However, many reactions with well-established thermochemical precedents remain difficult to achieve electrochemically. For example, hydroformylation (thermo-HFN) is an industrially important reaction that couples olefins and carbon monoxide (CO) to make aldehydes. However, the electrochemical analogue of hydroformylation (electro-HFN), which uses protons and electrons instead of hydrogen gas, represents a complex C-C bond-forming reaction that is difficult to achieve at heterogeneous electrocatalysts. In this work, we import Rh-based thermo-HFN catalysts onto electrode surfaces to unlock electro-HFN reactivity. At mild conditions of room temperature and 5 bar CO, we achieve Faradaic efficiencies of up to 15% and turnover frequencies of up to 0.7 h-1. This electro-HFN rate is an order of magnitude greater than the corresponding thermo-HFN rate at the same catalyst, temperature, and pressure. Reaction kinetics and operando X-ray absorption spectroscopy provide evidence for an electro-HFN mechanism that involves distinct elementary steps relative to thermo-HFN. This work demonstrates a step-by-step experimental strategy for electrifying a well-studied thermochemical reaction to unveil a new electrocatalyst for a complex and underexplored electrochemical reaction.
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Affiliation(s)
- Joy S. Zeng
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Emma L. Cosner
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Spencer P. Delgado-Kukuczka
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Chenyu Jiang
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Jason S. Adams
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
| | - Yuriy Román-Leshkov
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Karthish Manthiram
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, California 91125, United States
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54
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Chattopadhyay S, Mahapatra PL, Mattur MN, Pramanik A, Gupta S, Pieshkov TS, Saju S, Costin G, Vajtai R, Tiwary CS, Yakobson BI, Ajayan PM. Unlocking the Potential: Atomically Thin 2D Fluoritene from Exfoliated Fluorite Ore and Its Electrochemical Activity. NANO LETTERS 2024. [PMID: 38842459 DOI: 10.1021/acs.nanolett.4c01283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Fluorite mineral holds significant importance because of its optoelectronic properties and wide range of applications. Here, we report the successful exfoliation of bulk fluorite ore (calcium fluoride, CaF2) crystals into atomically thin two-dimensional fluoritene (2D CaF2) using a highly scalable liquid-phase exfoliation method. The microscopic and spectroscopy characterizations show the formation of (111) plane-oriented 2D CaF2 sheets with exfoliation-induced material strain due to bond breaking, leading to the changes in lattice parameter. Its potential role in electrocatalysis is further explored for deeper insight, and a probable mechanism is also discussed. The 2D CaF2 with long-term stability shows overpotential values of 670 and 770 mV vs RHE for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, at 10 mA cm-2. Computational simulations demonstrate the unique "direct-indirect" band gap switching with odd and even numbers of layers. Current work offers new avenues for exploring the structural and electrochemical properties of 2D CaF2 and its potential applicability.
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Affiliation(s)
- Shreyasi Chattopadhyay
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Preeti Lata Mahapatra
- School of Nano Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Manoj N Mattur
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Atin Pramanik
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Sunny Gupta
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Tymofii S Pieshkov
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Sreehari Saju
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Gelu Costin
- Department of Earth Environmental and Planetary Sciences, Rice University, Houston, Texas 77005, United States
| | - Robert Vajtai
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Chandra Sekhar Tiwary
- Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Boris I Yakobson
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Pulickel M Ajayan
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
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55
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Gao H, Xu J, Zhang X, Zhou M. Benchmarking the Intrinsic Activity of Transition Metal Oxides for the Oxygen Evolution Reaction with Advanced Nanoelectrodes. Angew Chem Int Ed Engl 2024; 63:e202404663. [PMID: 38575553 DOI: 10.1002/anie.202404663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/03/2024] [Accepted: 04/03/2024] [Indexed: 04/06/2024]
Abstract
The intrinsic activity assessment of transition metal oxides (TMOs) as key electrocatalysts for the oxygen evolution reaction (OER) has not been standardized due to uncertainties regarding their structure and composition, difficulties in accurately measuring their electrochemically active surface area (ECSA), and deficiencies in mass-transfer (MT) rates in conventional measurements. To address these issues, we utilized an electrodeposition-thermal annealing method to precisely synthesize single-particle TMOs with well-defined structure and composition. Concurrently, we engineered low roughness, spherical surfaces for individual particles, enabling precise measurement of their ECSA. Furthermore, by constructing a conductor-core semiconductor-shell structure, we evaluated the inherent OER activity of perovskite-type semiconductor materials, broadening the scope beyond just conductive TMOs. Finally, using single-particle nanoelectrode technique, we systematically measured individual TMO particles of various sizes for OER, overcoming MT limitations seen in conventional approaches. These improvements have led us to propose a precise and reliable approach to evaluating the intrinsic activity of TMOs, not only validating the accuracy of theoretical calculations but also revealing a strong correlation of OER activity on the melting point of TMOs. This discovery holds significant importance for future high-throughput material research and applications, offering valuable insights in electrocatalysis.
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Affiliation(s)
- Han Gao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Jianan Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Xueqi Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Min Zhou
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
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56
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Dhawale SC, Digraskar RV, Ghule AV, Sathe BR. Noble metal-free CZTS electrocatalysis: synergetic characteristics and emerging applications towards water splitting reactions. Front Chem 2024; 12:1394191. [PMID: 38882214 PMCID: PMC11177786 DOI: 10.3389/fchem.2024.1394191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 04/19/2024] [Indexed: 06/18/2024] Open
Abstract
This review provides a comprehensive overview of the production and modification of CZTS nanoparticles (NPs) and their application in electrocatalysis for water splitting. Various aspects, including surface modification, heterostructure design with carbon nanostructured materials, and tunable electrocatalytic studies, are discussed. A key focus is the synthesis of small CZTS nanoparticles with tunable reactivity, emphasizing the sonochemical method's role in their formation. Despite CZTS's affordability, it often exhibits poor hydrogen evolution reaction (HER) behavior. Carbon materials like graphene, carbon nanotubes, and C60 are highlighted for their ability to enhance electrocatalytic activity due to their unique properties. The review also discusses the amine functionalization of graphene oxide/CZTS composites, which enhances overall water splitting performance. Doping with non-noble metals such as Fe, Co., and Ni is presented as an effective strategy to improve catalytic activity. Additionally, the synthesis of heterostructures consisting of CZTS nanoparticles attached to MoS2-reduced graphene oxide (rGO) hybrids is explored, showing enhanced HER activity compared to pure CZTS and MoS2. The growing demand for energy and the need for efficient renewable energy sources, particularly hydrogen generation, are driving research in this field. The review aims to demonstrate the potential of CZTS-based electrocatalysts for high-performance and cost-effective hydrogen generation with low environmental impact. Vacuum-based and non-vacuum-based methods for fabricating CZTS are discussed, with a focus on simplicity and efficiency. Future developments in CZTS-based electrocatalysts include enhancing activity and stability, improving charge transfer mechanisms, ensuring cost-effectiveness and scalability, increasing durability, integrating with renewable energy sources, and gaining deeper insight into reaction processes. Overall, CZTS-based electrocatalysts show great promise for sustainable hydrogen generation, with ongoing research focused on improving performance and advancing their practical applications.
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Affiliation(s)
- Somnath C Dhawale
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar, Maharashtra, India
| | - Renuka V Digraskar
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar, Maharashtra, India
- Department of Nanotechnology, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar, Maharashtra, India
- Department of Chemistry, Savitribai Phule Pune University, Pune, India
| | - Anil V Ghule
- Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, India
| | - Bhaskar R Sathe
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar, Maharashtra, India
- Department of Nanotechnology, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar, Maharashtra, India
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57
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Yao Y, Liu Y, Shin J, Cai S, Zhang X, Guo Z, Blackman CS. In-situ fabrication of self-supported cobalt molybdenum sulphide on carbon paper for bifunctional water electrocatalysis. Heliyon 2024; 10:e31108. [PMID: 38826749 PMCID: PMC11141360 DOI: 10.1016/j.heliyon.2024.e31108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/30/2024] [Accepted: 05/09/2024] [Indexed: 06/04/2024] Open
Abstract
The fabrication of highly efficient yet stable noble-metal-free bifunctional electrocatalysts that can simultaneously catalyse both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) remains challenging. Herein, we employ the heterostructure coupling strategy, showcasing an aerosol-assisted chemical vapour deposition (AACVD) aided synthetic approach for the in-situ growth of cobalt molybdenum sulphide nanocomposites on carbon paper (CoMoS@CP) as a bifunctional electrocatalyst. The AACVD allows the rational incorporation of Co in the Mo-S binary structure, which modulates the morphology of CoMoS@CP, resulting in enhanced HER activity (ŋ10 = 171 mV in acidic and ŋ10 = 177 mV in alkaline conditions). Furthermore, the CoS2 species in the CoMoS@CP ternary structure extends the OER capability, yielding an ŋ100 of 455 mV in 1 M KOH. Lastly, we found that the synergistic effect of the Co-Mo-S interface elevates the bifunctional performance beyond binary counterparts, achieving a low cell voltage (1.70 V at 10 mA cm-2) in overall water splitting test and outstanding catalytic stability (∼90 % performance retention after 50-/30-h continuous operation at 10 and 100 mA cm-2, respectively). This work has opened up a new methodology for the controllable synthesis of self-supported transition metal-based electrocatalysts for applications in overall water splitting.
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Affiliation(s)
- Yuting Yao
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Yuhan Liu
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Juhun Shin
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Shenglin Cai
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Xinyue Zhang
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Zhengxiao Guo
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
- Department of Chemistry, HKU-CAS Joint Laboratory on New Materials, University of Hong Kong, Hong Kong SAR, 999077, China
- HKU Zhejiang Institute of Research and Innovation, Hangzhou, 311305, China
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58
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Huang JF, Hsieh WJ, Chen JL. Carbon-Promoted Pt-Single Atoms Anchored on RuO 2 Nanorods to Boost Electrochemical Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27504-27510. [PMID: 38758608 PMCID: PMC11145582 DOI: 10.1021/acsami.4c06033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/09/2024] [Accepted: 05/13/2024] [Indexed: 05/19/2024]
Abstract
While efficient for electrochemical hydrogen evolution reaction (HER), Pt is limited by its cost and rarity. Traditional Pt catalysts and Pt single-atom (aPt) catalysts (Pt-SACs) face challenges in maintaining kinetically favorable HER pathways (Volmer-Tafel) at ultralow Pt loadings. Herein, carbon-promoted aPts were deposited on RuO2 without the addition of reductants. aPts confined on carbon-supported RuO2 nanorods (aPt/RuO2NR/Carbon) promoted "inter-aPts" Tafel. aPt/RuO2NR/Carbon is the Pt-SAC that retained underpotentially deposited H; additionally, its HER onset overpotential was "negative". The aPt/RuO2NR/Carbon exhibited 260-fold higher Pt mass activity (imPt)/turnover frequency (TOF) (522.7 A mg-1/528.4 s-1) than that of commercial Pt/C (1.9 A mg-1/1.9 s-1). In an ultralow Pt loading (0.19 μg cm-2), the HER rate-determining step maintained Volmer-Tafel and the Pt utilization efficiency was 100.3%.
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Affiliation(s)
- Jing-Fang Huang
- A
Department of Chemistry, National Chung
Hsing University, Taichung 402, Taiwan (R.O.C)
| | - Wen-Jun Hsieh
- A
Department of Chemistry, National Chung
Hsing University, Taichung 402, Taiwan (R.O.C)
| | - Jeng-Lung Chen
- National
Synchrotron Radiation Research Center, Science-Based
Industrial Park, Hsinchu30076, Taiwan (R.O.C)
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59
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Rajagopal V, Mehla S, Jones LA, Bhargava SK. Nanoengineered Cobalt Electrocatalyst for Alkaline Oxygen Evolution Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:946. [PMID: 38869572 PMCID: PMC11173492 DOI: 10.3390/nano14110946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 05/18/2024] [Accepted: 05/24/2024] [Indexed: 06/14/2024]
Abstract
The alkaline oxygen evolution reaction (OER) remains a bottleneck in green hydrogen production owing to its slow reaction kinetics and low catalytic efficiencies of earth abundant electrocatalysts in the alkaline OER reaction. This study investigates the OER performance of hierarchically porous cobalt electrocatalysts synthesized using the dynamic hydrogen bubble templating (DHBT) method. Characterization studies revealed that electrocatalysts synthesized under optimized conditions using the DHBT method consisted of cobalt nanosheets, and hierarchical porosity with macropores distributed in a honeycomb network and mesopores distributed between cobalt nanosheets. Moreover, X-ray photoelectron spectroscopy studies revealed the presence of Co(OH)2 as the predominant surface cobalt species while Raman studies revealed the presence of the cubic Co3O4 phase in the synthesized electrocatalysts. The best performing electrocatalyst required only 360 mV of overpotential to initiate a current density of 10 mA cm-2, exhibited a Tafel slope of 37 mV dec-1, and stable OER activity over 24 h. The DHBT method offers a facile, low cost and rapid synthesis approach for preparation for highly efficient cobalt electrocatalysts.
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Affiliation(s)
| | | | | | - Suresh K. Bhargava
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, STEM College, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia; (V.R.); (S.M.)
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60
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Chen H, Iyer J, Liu Y, Krebs S, Deng F, Jentys A, Searles DJ, Haider MA, Khare R, Lercher JA. Mechanism of Electrocatalytic H 2 Evolution, Carbonyl Hydrogenation, and Carbon-Carbon Coupling on Cu. J Am Chem Soc 2024; 146:13949-13961. [PMID: 38739624 PMCID: PMC11117180 DOI: 10.1021/jacs.4c01911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/19/2024] [Accepted: 05/03/2024] [Indexed: 05/16/2024]
Abstract
Aqueous-phase electrocatalytic hydrogenation of benzaldehyde on Cu leads not only to benzyl alcohol (the carbonyl hydrogenation product), but Cu also catalyzes carbon-carbon coupling to hydrobenzoin. In the absence of an organic substrate, H2 evolution proceeds via the Volmer-Tafel mechanism on Cu/C, with the Tafel step being rate-determining. In the presence of benzaldehyde, the catalyst surface is primarily covered with the organic substrate, while H* coverage is low. Mechanistically, the first H addition to the carbonyl O of an adsorbed benzaldehyde molecule leads to a surface-bound hydroxy intermediate. The hydroxy intermediate then undergoes a second and rate-determining H addition to its α-C to form benzyl alcohol. The H additions occur predominantly via the proton-coupled electron transfer mechanism. In a parallel reaction, the radical α-C of the hydroxy intermediate attacks the electrophilic carbonyl C of a physisorbed benzaldehyde molecule to form the C-C bond, which is rate-determining. The C-C coupling is accompanied by the protonation of the formed alkoxy radical intermediate, coupled with electron transfer from the surface of Cu, to form hydrobenzoin.
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Affiliation(s)
- Hongwen Chen
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Garching 85748, Germany
| | - Jayendran Iyer
- Renewable
Energy and Chemicals Laboratory, Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane 4072, QLD, Australia
| | - Yue Liu
- Shanghai
Key Laboratory of Green Chemistry and Chemical Processes, School of
Chemistry and Molecular Engineering, East
China Normal University, Shanghai 200062, China
| | - Simon Krebs
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Garching 85748, Germany
| | - Fuli Deng
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Garching 85748, Germany
| | - Andreas Jentys
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Garching 85748, Germany
| | - Debra J. Searles
- Australian
Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane 4072, QLD, Australia
- School
of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, QLD, Australia
- ARC Centre
of Excellence for Green Electrochemical Transformation of Carbon Dioxide, The University of Queensland, Brisbane 4072, QLD, Australia
| | - M. Ali Haider
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Garching 85748, Germany
- Renewable
Energy and Chemicals Laboratory, Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
- Indian
Institute of Technology Delhi−Abu Dhabi, Khalifa City B, Abu Dhabi, United Arab Emirates
| | - Rachit Khare
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Garching 85748, Germany
| | - Johannes A. Lercher
- Department
of Chemistry and Catalysis Research Center, Technical University of Munich, Garching 85748, Germany
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland 99352, Washington, United States
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61
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de Lima AFV, Lourenço ADA, Silva VD, Menezes de Oliveira AL, Rostas AM, Barbu-Tudoran L, Leostean C, Pana O, da Silva RB, Macedo DA, da Silva FF. Co 3O 4/activated carbon nanocomposites as electrocatalysts for the oxygen evolution reaction. Dalton Trans 2024; 53:8563-8575. [PMID: 38682235 DOI: 10.1039/d3dt03720g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
The Oxygen Evolution Reaction (OER) is crucial in various processes such as hydrogen production via water splitting. Several electrocatalysts, including metal oxides, have been evaluated to enhance the reaction efficiency. Zeolitic Imidazolate Framework-67 (ZIF-67) has been employed as a precursor to produce Co3O4, showing high OER activity. Additionally, the formation of composites with carbon-based materials improves the activity of these materials. Thus, this work focuses on synthesizing ZIF-67 and commercial activated carbon (AC) composites, which were used as precursors to obtain Co3O4/C electrocatalysts by calculating ZIF-67/CX (X = 10, 30, and 50, the mass percentage of AC). The obtained materials were thoroughly characterized by employing X-ray powder diffraction (XRD), confirming the cobalt oxide structure with a sphere-like morphology as observed in the TEM images. The presence of oxygen vacancies was confirmed by infrared spectroscopy and EPR measurements. The electrocatalytic performance in the OER was investigated by linear sweep voltammetry (LSV), which revealed an overpotential of 325 mV at 10 mA cm-2 and a Tafel slope value of 65.32 mV dec-1 for Co3O4/C10, superior in activity to several previously reported studies in the literature and electrochemical stability of up to 8 hours. The reduced value of charge transfer resistance, high double-layer capacitance, and the presence of Co3+ ions justify the superior performance of the Co3O4/C10 electrocatalyst.
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Affiliation(s)
- Andrei F V de Lima
- Departamento de Química, Universidade Federal da Paraíba, 58051-900, João Pessoa-PB, Brazil.
| | - Annaíres de A Lourenço
- Departamento de Química, Universidade Federal da Paraíba, 58051-900, João Pessoa-PB, Brazil.
| | - Vinícius D Silva
- Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPCEM, Universidade Federal da Paraíba, 58051-900, João Pessoa-PB, Brazil
| | - André L Menezes de Oliveira
- Núcleo de Pesquisa e Extensão LACOM, Departamento de Química, Universidade Federal da Paraíba, 52051-85, João Pessoa-PB, Brazil
| | - Arpad M Rostas
- Department of Physics of Nanostructure Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania
| | - Lucian Barbu-Tudoran
- Department of Physics of Nanostructure Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania
| | - Cristian Leostean
- Department of Physics of Nanostructure Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania
| | - Ovidiu Pana
- Department of Physics of Nanostructure Systems, National Institute for Research and Development of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, Romania
| | - Rodolfo B da Silva
- Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPCEM, Universidade Federal da Paraíba, 58051-900, João Pessoa-PB, Brazil
| | - Daniel A Macedo
- Programa de Pós-Graduação em Ciência e Engenharia de Materiais - PPCEM, Universidade Federal da Paraíba, 58051-900, João Pessoa-PB, Brazil
| | - Fausthon F da Silva
- Departamento de Química, Universidade Federal da Paraíba, 58051-900, João Pessoa-PB, Brazil.
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Tadesse Tsega T, Zhang Y, Zai J, Lai CW, Qian X. Incorporation of Ag in Co 9S 8-Ni 3S 2 for Predominantly Enhanced Electrocatalytic Activities for Oxygen Evolution Reaction: A Combined Experimental and DFT Study. Chempluschem 2024:e202400235. [PMID: 38760894 DOI: 10.1002/cplu.202400235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/20/2024]
Abstract
Electrodeposition of abundant metals to fabricate efficient and durable electrodes indicate a viable role in advancing renewable electrochemical energy tools. Herein, we deposit Co9S8-Ag-Ni3S2@NF on nickel foam (NF) to produce Co9S8-Ag-Ni3S2@NF as a exceedingly proficient electrode for oxygen evolution reaction (OER). The electrochemical investigation verifies that the Co9S8-Ag-Ni3S2@NF electrode reveals better electrocatalytic activity to OER because of its nanoflowers' open-pore morphology, reduced overpotential (η10=125 mV), smaller charge transfer resistance, long-term stability, and a synergistic effect between various components, which allows the reactants to be more easily absorbed and subsequently converted into gaseous products during the water electrolysis route. Density functional theory (DFT) calculation as well reveals the introduction of Ag (222) surface into the Co9S8 (440)-Ni3S2 (120) structure increases the electronic density of states (DOS) per unit cell of a system and increases the electrocatalytic activity of OER by considerably lowering the energy barriers of its intermediates. This study provides the innovation of employing trimetallic nanomaterials immobilized on a conductive, continuous porous three-dimensional network formed on a nickel foam (NF) substrate as a highly proficient catalyst for OER.
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Affiliation(s)
- Tsegaye Tadesse Tsega
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China Tel
| | - Yuchi Zhang
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing, Jiangsu, 211171, P. R. China
| | - Jiantao Zai
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China Tel
| | - Chin Wei Lai
- Nanotechnology and Catalysis Research Centre (NANOCAT), Institute for Advanced Studies (IAS), University of Malaya, 3rd Floor, Block A, 50603, Kuala Lumpur, Malaysia Tel
| | - Xuefeng Qian
- School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China Tel
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63
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Schalenbach M, Tesch R, Kowalski PM, Eichel RA. The electrocatalytic activity for the hydrogen evolution reaction on alloys is determined by element-specific adsorption sites rather than d-band properties. Phys Chem Chem Phys 2024; 26:14171-14185. [PMID: 38713015 DOI: 10.1039/d4cp01084a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Trends of the electrocatalytic activities for the hydrogen evolution reaction (HER) across transition metals are typically explained by d-band properties such as center or upper edge positions in relation to Fermi levels. Here, the universality of this relation is questioned for alloys, exemplified for the AuPt system which is examined with electrocatalytic measurements and density functional theory (DFT) calculations. At small overpotentials, linear combinations of the pure-metals' Tafel kinetics normalized to the alloy compositions are found to precisely resemble the measured HER activities. DFT calculations show almost neighbor-independent adsorption energies on Au and Pt surface-sites, respectively, as the adsorbed hydrogen influences the electron density mostly locally at the adsorption site itself. In contrast, the density of states of the d-band describe the delocalized conduction electrons in the alloys, which are unable to portray the local electronic environments at adsorption sites and related bonding strengths. The adsorption energies at element-specific surface sites are related to overpotential-dependent reaction mechanisms in a multidimensional reinterpretation of the volcano plot for alloys, which bridges the found inconsistencies between activity and bonding strength descriptors of the common electrocatalytic theory for alloys.
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Affiliation(s)
- Maximilian Schalenbach
- Fundamental Electrochemistry (IEK-9), Institute of Energy and Climate Research, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52425 Jülich, Germany.
| | - Rebekka Tesch
- Theory and Computation of Energy Materials (IEK-13), Institute of Energy and Climate Research, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52425 Jülich, Germany
- Jülich Aachen Research Alliance JARA Energy & Center for Simulation and Data Science (CSD), 52425 Jülich, Germany
| | - Piotr M Kowalski
- Theory and Computation of Energy Materials (IEK-13), Institute of Energy and Climate Research, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52425 Jülich, Germany
- Jülich Aachen Research Alliance JARA Energy & Center for Simulation and Data Science (CSD), 52425 Jülich, Germany
| | - Rüdiger-A Eichel
- Fundamental Electrochemistry (IEK-9), Institute of Energy and Climate Research, Forschungszentrum Jülich, Wilhelm-Johnen-Straße, 52425 Jülich, Germany.
- Institute of Physical Chemistry, RWTH Aachen University, 52062 Aachen, Germany
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64
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Wang X, Li Z, Sun S, Sun H, Yang C, Cai Z, Zhang H, Yue M, Zhang M, Wang H, Yao Y, Liu Q, Li L, Chu W, Hu J, Sun X, Tang B. Oxalate anions-intercalated NiFe layered double hydroxide as a highly active and stable electrocatalyst for alkaline seawater oxidation. J Colloid Interface Sci 2024; 662:596-603. [PMID: 38367577 DOI: 10.1016/j.jcis.2024.02.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 02/19/2024]
Abstract
Seawater electrolysis is gaining recognition as a promising method for hydrogen production. However, severe anode corrosion caused by the high concentration of chloride ions (Cl-) poses a challenge for the long-term oxygen evolution reaction. Herein, an anti-corrosion strategy of oxalate anions intercalation in NiFe layered double hydroxide on nickel foam (NiFe-C2O42- LDH/NF) is proposed. The intercalation of these highly negatively charged C2O42- serves to establish electrostatic repulsion and impede Cl- adsorption. In alkaline seawater, NiFe-C2O42- LDH/NF requires an overpotential of 337 mV to gain the large current density of 1000 mA cm-2 and operates continuously for 500 h. The intercalation of C2O42- is demonstrated to significantly boost the activity and stability of NiFe LDH-based materials during alkaline seawater oxidation.
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Affiliation(s)
- Xiaoyan Wang
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, Chongqing, China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Zixiao Li
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China
| | - Shengjun Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Hang Sun
- Department of Science and Environmental Studies, Faculty of Liberal Arts and Social Science, The Education University of Hong Kong, Hong Kong 999077, China
| | - Chaoxin Yang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Zhengwei Cai
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Hui Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Meng Yue
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Min Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Hefeng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Yongchao Yao
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China
| | - Qian Liu
- Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
| | - Luming Li
- Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
| | - Wei Chu
- Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
| | - Jianming Hu
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, Chongqing, China.
| | - Xuping Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China; Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China; Laoshan Laboratory, Qingdao 266237, Shandong, China.
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Liu L, Kang L, Feng J, Hopkinson DG, Allen CS, Tan Y, Gu H, Mikulska I, Celorrio V, Gianolio D, Wang T, Zhang L, Li K, Zhang J, Zhu J, Held G, Ferrer P, Grinter D, Callison J, Wilding M, Chen S, Parkin I, He G. Atomically dispersed asymmetric cobalt electrocatalyst for efficient hydrogen peroxide production in neutral media. Nat Commun 2024; 15:4079. [PMID: 38744850 PMCID: PMC11093996 DOI: 10.1038/s41467-024-48209-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 04/22/2024] [Indexed: 05/16/2024] Open
Abstract
Electrochemical hydrogen peroxide (H2O2) production (EHPP) via a two-electron oxygen reduction reaction (2e- ORR) provides a promising alternative to replace the energy-intensive anthraquinone process. M-N-C electrocatalysts, which consist of atomically dispersed transition metals and nitrogen-doped carbon, have demonstrated considerable EHPP efficiency. However, their full potential, particularly regarding the correlation between structural configurations and performances in neutral media, remains underexplored. Herein, a series of ultralow metal-loading M-N-C electrocatalysts are synthesized and investigated for the EHPP process in the neutral electrolyte. CoNCB material with the asymmetric Co-C/N/O configuration exhibits the highest EHPP activity and selectivity among various as-prepared M-N-C electrocatalyst, with an outstanding mass activity (6.1 × 105 A gCo-1 at 0.5 V vs. RHE), and a high practical H2O2 production rate (4.72 mol gcatalyst-1 h-1 cm-2). Compared with the popularly recognized square-planar symmetric Co-N4 configuration, the superiority of asymmetric Co-C/N/O configurations is elucidated by X-ray absorption fine structure spectroscopy analysis and computational studies.
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Affiliation(s)
- Longxiang Liu
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Liqun Kang
- Department of Inorganic Spectroscopy, Max-Planck-Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470, Mülheim an der Ruhr, Germany
| | - Jianrui Feng
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - David G Hopkinson
- Electron Physical Science Imaging Centre, Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Christopher S Allen
- Electron Physical Science Imaging Centre, Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
- Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK
| | - Yeshu Tan
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Hao Gu
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Iuliia Mikulska
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Veronica Celorrio
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Diego Gianolio
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Tianlei Wang
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Liquan Zhang
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Kaiqi Li
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Jichao Zhang
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Jiexin Zhu
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Georg Held
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Pilar Ferrer
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - David Grinter
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - June Callison
- UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, OX11 0FA, UK
| | - Martin Wilding
- UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, OX11 0FA, UK
| | - Sining Chen
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK
| | - Ivan Parkin
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
| | - Guanjie He
- Christopher Ingold Laboratory, Department of Chemistry, University College London, London, WC1H 0AJ, UK.
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Chaudhary K, Zulfiqar S, ALOthman ZA, Shakir I, Warsi MF, Cochran EW. Three-dimensional bimodal pore-rich G/MXene sponge amalgamated with vanadium diselenide nanosheets as a high-performance electrode for electrochemical water-oxidation/reduction reactions. Dalton Trans 2024; 53:8177-8190. [PMID: 38683625 DOI: 10.1039/d4dt00602j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Exploring new strategies to design non-precious and efficient electrocatalysts can provide a solution for sluggish electrocatalytic kinetics and sustainable hydrogen energy. Transition metal selenides are potential contenders for bifunctional electrocatalysis owing to their unique layered structure, low band gap, and high intrinsic activities. However, insufficient access to active sites, lethargic water dissociation, and structural degradation of active materials during electrochemical reactions limit their activities, especially in alkaline media. In this article, we report a useful strategy to assemble vanadium diselenide (VSe2) into a 3D MXene/rGO-based sponge-like architecture (VSe2@G/MXe) using hydrothermal and freeze-drying approaches. The 3D hierarchical meso/macro-pore rich sponge-like morphology not only prevents aggregation of VSe2 nanosheets but also offers a kinetics-favorable framework and high robustness to the electrocatalyst. Synergistic coupling of VSe2 and a MXene/rGO matrix yields a heterostructure with a large specific surface area, high conductivity, and multi-dimensional anisotropic pore channels for uninterrupted mass transport and gas diffusion. Consequently, VSe2@G/MXe presented superior electrochemical activity for both the HER and OER compared to its counterparts (VSe2 and VSe2@G), in alkaline media. The overpotentials required to reach a cathodic and anodic current density of 10 mA cm-2 were 153 mV (Tafel slope = 84 mV dec-1) and 241 mV (Tafel slope = 87 mV dec-1), respectively. The Rct values at the open circuit voltage were as low as 9.1 Ω and 1.41 Ω for the HER and OER activity, respectively. Importantly, VSe2@G/MXe withstands a steady current output for a long 24 h operating time. Hence, this work presents a rational design for 3D microstructures with optimum characteristics for efficient bifunctional alkaline water-splitting.
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Affiliation(s)
- Khadija Chaudhary
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Sonia Zulfiqar
- Department of Chemistry, Faculty of Science, University of Ostrava, 30. Dubna 22, Ostrava 701 03, Czech Republic
- Department of Chemical and Biological Engineering, Iowa State University, Sweeney Hall, 618 Bissell Road, Ames, Iowa 50011, USA.
| | - Zeid A ALOthman
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Imran Shakir
- Department of Chemistry, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Muhammad Farooq Warsi
- Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
| | - Eric W Cochran
- Department of Chemical and Biological Engineering, Iowa State University, Sweeney Hall, 618 Bissell Road, Ames, Iowa 50011, USA.
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Alam M, Ping K, Danilson M, Mikli V, Käärik M, Leis J, Aruväli J, Paiste P, Rähn M, Sammelselg V, Tammeveski K, Haller S, Kramm UI, Starkov P, Kongi N. Iron Triad-Based Bimetallic M-N-C Nanomaterials as Highly Active Bifunctional Oxygen Electrocatalysts. ACS APPLIED ENERGY MATERIALS 2024; 7:4076-4087. [PMID: 38756864 PMCID: PMC11095250 DOI: 10.1021/acsaem.4c00366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/24/2024] [Accepted: 04/24/2024] [Indexed: 05/18/2024]
Abstract
The use of precious metal electrocatalysts in clean electrochemical energy conversion and storage applications is widespread, but the sustainability of these materials, in terms of their availability and cost, is constrained. In this research, iron triad-based bimetallic nitrogen-doped carbon (M-N-C) materials were investigated as potential bifunctional electrocatalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The synthesis of bimetallic FeCo-N-C, CoNi-N-C, and FeNi-N-C catalysts involved a precisely optimized carbonization process of their respective metal-organic precursors. Comprehensive structural analysis was undertaken to elucidate the morphology of the prepared M-N-C materials, while their electrocatalytic performance was assessed through cyclic voltammetry and rotating disk electrode measurements in a 0.1 M KOH solution. All bimetallic catalyst materials demonstrated impressive bifunctional electrocatalytic performance in both the ORR and the OER. However, the FeNi-N-C catalyst proved notably more stable, particularly in the OER conditions. Employed as a bifunctional catalyst for ORR/OER within a customized zinc-air battery, FeNi-N-C exhibited a remarkable discharge-charge voltage gap of only 0.86 V, alongside a peak power density of 60 mW cm-2. The outstanding stability of FeNi-N-C, operational for about 55 h at 2 mA cm-2, highlights its robustness for prolonged application.
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Affiliation(s)
- Mahboob Alam
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, Tallinn 12618, Estonia
- Department
of Chemistry, Catalysts and Electrocatalysts Group, Technical University of Darmstadt, Darmstadt 64287, Germany
| | - Kefeng Ping
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, Tallinn 12618, Estonia
| | - Mati Danilson
- Department
of Materials and Environmental Technology, Tallinn University of Technology, Tallinn 19086, Estonia
| | - Valdek Mikli
- Department
of Materials and Environmental Technology, Tallinn University of Technology, Tallinn 19086, Estonia
| | - Maike Käärik
- Institute
of Chemistry, University of Tartu, Tartu 50411, Estonia
| | - Jaan Leis
- Institute
of Chemistry, University of Tartu, Tartu 50411, Estonia
| | - Jaan Aruväli
- Institute
of Ecology and Earth Sciences, University
of Tartu, Tartu 50411, Estonia
| | - Päärn Paiste
- Institute
of Ecology and Earth Sciences, University
of Tartu, Tartu 50411, Estonia
| | - Mihkel Rähn
- Institute
of Physics, University of Tartu, Tartu 50411, Estonia
| | | | - Kaido Tammeveski
- Institute
of Chemistry, University of Tartu, Tartu 50411, Estonia
| | - Steffen Haller
- Department
of Chemistry, Catalysts and Electrocatalysts Group, Technical University of Darmstadt, Darmstadt 64287, Germany
| | - Ulrike I. Kramm
- Department
of Chemistry, Catalysts and Electrocatalysts Group, Technical University of Darmstadt, Darmstadt 64287, Germany
| | - Pavel Starkov
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, Tallinn 12618, Estonia
| | - Nadezda Kongi
- Institute
of Chemistry, University of Tartu, Tartu 50411, Estonia
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Zhang J, Wang M, An J, Shi H, Dai L, Jiao S. Ultra-Stable Ti Vacancies-Pt Atomic Clusters Structure on Titanium Oxycarbide Supports for High Current Density Hydrogen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309823. [PMID: 38109127 DOI: 10.1002/smll.202309823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/30/2023] [Indexed: 12/19/2023]
Abstract
Electrocatalysts with low Pt loading mass to achieve high current density (≥1 A cm-2) for hydrogen evolution reaction (HER) are still extremely challenging due to the limited intrinsic activity and weak stability of catalytic sites. The modulation of the electronic microenvironment of the support-Pt structure is crucial to enhance the intrinsic activity and stability of catalytic sites. Herein, an innovative titanium oxycarbide (TiVCO) solid solution with Ti vacancies (TiV) is proposed as support to anchor sub-nanoscale Pt atomic clusters (Pt ACs) and a stable "TiV-Pt ACs" structure is carefully designed. The electronic microenvironment of "TiV-Pt ACs" is indirectly optimized by an unsaturated C/O site near TiV. Thanks to this, novel "TiV-Pt ACs" structure (Pt@TiVCO) with low Pt loading mass (2.44 wt.%) exhibits excellent HER activity in acidic solution and the mass activity is more than ten times that of commercial 20% Pt/C at the overpotentials of 50 and 100 mV. Particularly, Pt@TiVCO shows amazing stability at high and fluctuating current density of 1-2 A cm-2 for 120 h. This work provides a novel and promising method to develop stable and low-loading Pt-based catalysts adapting to high current density.
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Affiliation(s)
- Jintao Zhang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Mingyong Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- College of Material Science and Engineering, North China University of Science and Technology, Hebei Province Laboratory of Inorganic Nonmetallic Materials, Tangshan, 063210, P. R. China
| | - Jialiang An
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Haotian Shi
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Lei Dai
- College of Material Science and Engineering, North China University of Science and Technology, Hebei Province Laboratory of Inorganic Nonmetallic Materials, Tangshan, 063210, P. R. China
| | - Shuqiang Jiao
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals, University of Science and Technology Beijing, Beijing, 100083, P. R. China
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Laghrissi A, Es-Souni M. Oxygen Defects Containing TiN Films for the Hydrogen Evolution Reaction: A Robust Thin-Film Electrocatalyst with Outstanding Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:770. [PMID: 38727364 PMCID: PMC11085547 DOI: 10.3390/nano14090770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/12/2024]
Abstract
Density functional theory (DFT) calculations of hydrogen adsorption on titanium nitride had previously shown that hydrogen may adsorb on both titanium and nitrogen sites with a moderate adsorption energy. Further, the diffusion barrier was also found to be low. These findings may qualify TiN, a versatile multifunctional material with electronic conductivity, as an electrode material for the hydrogen evolution reaction (HER). This was the main impetus of this study, which aims to experimentally and theoretically investigate the electrocatalytic properties of TiN layers that were processed on a Ti substrate using reactive ion sputtering. The properties are discussed, focusing on the role of oxygen defects introduced during the sputtering process on the HER. Based on DFT calculations, it is shown that these oxygen defects alter the electronic environment of the Ti atoms, which entails a low hydrogen adsorption energy in the range of -0.1 eV; this leads to HER performances that match those of Pt-NPs in acidic media. When a few nanometer-thick layers of Pd-NPs are sputtered on top of the TiN layer, the performance is drastically reduced. This is interpreted in terms of oxygen defects being scavenged by the Pd-NPs near the surface, which is thought to reduce the hydrogen adsorption sites.
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Affiliation(s)
- Ayoub Laghrissi
- Currently at Mads Clausen Institute, University of Southern Denmark, 6400 Sønderborg, Denmark;
| | - Mohammed Es-Souni
- Institute of Materials and Surface Technology, Honorary Member of Kiel University of Applied Sciences, 24249 Kiel, Germany
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70
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Wetzel A, Morell D, von der Au M, Wittstock G, Ozcan O, Witt J. Transpassive Metal Dissolution vs. Oxygen Evolution Reaction: Implication for Alloy Stability and Electrocatalysis. Angew Chem Int Ed Engl 2024; 63:e202317058. [PMID: 38369613 DOI: 10.1002/anie.202317058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/18/2024] [Accepted: 02/01/2024] [Indexed: 02/20/2024]
Abstract
Multi-principal element alloys (MPEAs) are gaining interest in corrosion and electrocatalysis research due to their electrochemical stability across a broad pH range and the design flexibility they offer. Using the equimolar CrCoNi alloy, we observe significant metal dissolution in a corrosive electrolyte (0.1 M NaCl, pH 2) concurrently with the oxygen evolution reaction (OER) in the transpassive region, despite the absence of hysteresis in polarization curves or other obvious corrosion indicators. We present a characterization scheme to delineate the contribution of OER and alloy dissolution, using scanning electrochemical microscopy (SECM) for OER-onset detection, and quantitative chemical analysis with inductively coupled-mass spectrometry (ICP-MS) and ultraviolet visible light (UV/Vis) spectrometry to elucidate metal dissolution processes. In situ electrochemical atomic force microscopy (EC-AFM) revealed that the transpassive metal dissolution on CrCoNi is dominated by intergranular corrosion. These results have significant implications for the stability of MPEAs in corrosion systems, emphasizing the necessity of analytically determining metal ions released from MPEA electrodes into the electrolyte when evaluating Faradaic efficiencies of OER catalysts. The release of transition metal ions not only reduces the Faradaic efficiency of electrolyzers but may also cause poisoning and degradation of membranes in electrochemical reactors.
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Affiliation(s)
- Annica Wetzel
- Bundesanstalt für Materialforschung und, Prüfung (BAM) Institution, Unter den Eichen 87, 12205, Berlin, Germany
- Institute of Chemistry, Carl v. Ossietzky Universität Oldenburg, Ammerländer Heerstrasse 114-118, 26129, Oldenburg, Germany
| | - Daniel Morell
- Bundesanstalt für Materialforschung und, Prüfung (BAM) Institution, Unter den Eichen 87, 12205, Berlin, Germany
| | - Marcus von der Au
- Bundesanstalt für Materialforschung und, Prüfung (BAM) Institution, Unter den Eichen 87, 12205, Berlin, Germany
| | - Gunther Wittstock
- Institute of Chemistry, Carl v. Ossietzky Universität Oldenburg, Ammerländer Heerstrasse 114-118, 26129, Oldenburg, Germany
| | - Ozlem Ozcan
- Bundesanstalt für Materialforschung und, Prüfung (BAM) Institution, Unter den Eichen 87, 12205, Berlin, Germany
| | - Julia Witt
- Bundesanstalt für Materialforschung und, Prüfung (BAM) Institution, Unter den Eichen 87, 12205, Berlin, Germany
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71
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Ma G, Al-Mahayni H, Jiang N, Song D, Qiao B, Xu Z, Seifitokaldani A, Zhao S, Liang Z. Electrokinetic Analyses Uncover the Rate-Determining Step of Biomass-Derived Monosaccharide Electroreduction on Copper. Angew Chem Int Ed Engl 2024; 63:e202401602. [PMID: 38345598 DOI: 10.1002/anie.202401602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Indexed: 03/09/2024]
Abstract
Electrochemical biomass conversion holds promise to upcycle carbon sources and produce valuable products while reducing greenhouse gas emissions. To this end, deep insight into the interfacial mechanism is essential for the rational design of an efficient electrocatalytic route, which is still an area of active research and development. Herein, we report the reduction of dihydroxyacetone (DHA)-the simplest monosaccharide derived from glycerol feedstock-to acetol, the vital chemical intermediate in industries, with faradaic efficiency of 85±5 % on a polycrystalline Cu electrode. DHA reduction follows preceding dehydration by coordination with the carbonyl and hydroxyl groups and the subsequent hydrogenation. The electrokinetic profile indicates that the rate-determining step (RDS) includes a proton-coupled electron transfer (PCET) to the dehydrated intermediate, revealed by coverage-dependent Tafel slope and isotopic labeling experiments. An approximate zero-order dependence of H+ suggests that water acts as the proton donor for the interfacial PCET process. Leveraging these insights, we formulate microkinetic models to illustrate its origin that Eley-Rideal (E-R) dominates over Langmuir-Hinshelwood (L-H) in governing Cu-mediated DHA reduction, offering rational guidance that increasing the concentration of the adsorbed reactant alone would be sufficient to promote the activity in designing practical catalysts.
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Affiliation(s)
- Guoquan Ma
- School of Physics Science and Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, China
| | - Hasan Al-Mahayni
- Department of Chemical Engineering, McGill University Wong Building, 3610 University Street, Montreal, Quebec, H3A 0C5, Canada
| | - Na Jiang
- School of Physics Science and Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, China
| | - Dandan Song
- School of Physics Science and Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, China
| | - Bo Qiao
- School of Physics Science and Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, China
| | - Zheng Xu
- School of Physics Science and Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, China
| | - Ali Seifitokaldani
- Department of Chemical Engineering, McGill University Wong Building, 3610 University Street, Montreal, Quebec, H3A 0C5, Canada
| | - Suling Zhao
- School of Physics Science and Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, China
| | - Zhiqin Liang
- School of Physics Science and Engineering, Beijing Jiaotong University, Shangyuancun 3, Haidian District, Beijing, 100044, China
- Tangshan Research Institute of Beijing Jiaotong University, Xinhua Xi Street 46, Tangshan city, Hebei, 063000, China
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72
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Alemany-Molina G, Navlani-García M, Juan-Juan J, Morallón E, Cazorla-Amorós D. Exploring the synergistic effect of palladium nanoparticles and highly dispersed transition metals on carbon nitride/super-activated carbon composites for boosting electrocatalytic activity. J Colloid Interface Sci 2024; 660:401-411. [PMID: 38244506 DOI: 10.1016/j.jcis.2024.01.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/13/2023] [Accepted: 01/08/2024] [Indexed: 01/22/2024]
Abstract
In the present work, multifunctional electrocatalysts formed by palladium nanoparticles (Pd NPs) loaded on Fe or Cu-containing composite supports, based on carbon nitride (C3N4) and super-activated carbon with a high porosity development (SBET 3180 m2/g, VDR 1.57 cm3/g, and VT 1.65 cm3/g), were synthesised. The presence of Fe or Cu sites favoured the formation of Pd NPs with small average particle size and a very narrow size distribution, which agreed with Density Functional Theory (DFT) calculations showing that the interaction of Pd clusters with C3N4 flakes is weaker than with Cu- or Fe-C3N4 sites. The electroactivity was also dependent on the composition and, as suggested by preliminary DFT calculations, the Pd-Cu catalyst showed lower overpotential for hydrogen evolution reaction (HER) while bifunctional oxygen reduction reaction/ oxygen evolution reaction (ORR/OER) behaviour was superior in Pd-Fe sample. The Pd-Fe electrocatalyst was studied in a zinc-air battery (ZAB) for 10 h, showing a performance similar to a commercial Pt/C + RuO2 catalyst with a high content of precious metal. This study demonstrates the synergistic effect between Pd species and transition metals and shows that transition metals anchored on C3N4-based composite materials promote the electroactivity of Pd NPs in HER, ORR and OER due to the interaction between both species.
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Affiliation(s)
- G Alemany-Molina
- Department of Inorganic Chemistry and Materials Institute, University of Alicante, Ap. 99, Alicante E-03080, Spain
| | - M Navlani-García
- Department of Inorganic Chemistry and Materials Institute, University of Alicante, Ap. 99, Alicante E-03080, Spain
| | - J Juan-Juan
- Research Support Services, University of Alicante, Ap. 99, Alicante E-03080, Spain
| | - E Morallón
- Department of Physical Chemistry and Materials Institute, University of Alicante, Ap. 99, Alicante E-03080, Spain
| | - D Cazorla-Amorós
- Department of Inorganic Chemistry and Materials Institute, University of Alicante, Ap. 99, Alicante E-03080, Spain.
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73
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van der Heijden O, Park S, Vos RE, Eggebeen JJJ, Koper MTM. Tafel Slope Plot as a Tool to Analyze Electrocatalytic Reactions. ACS ENERGY LETTERS 2024; 9:1871-1879. [PMID: 38633990 PMCID: PMC11019648 DOI: 10.1021/acsenergylett.4c00266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/22/2024] [Accepted: 03/28/2024] [Indexed: 04/19/2024]
Abstract
Kinetic and nonkinetic contributions to the Tafel slope value can be separated using a Tafel slope plot, where a constant Tafel slope region indicates kinetic meaningfulness. Here, we compare the Tafel slope values obtained from linear sweep voltammetry to the values obtained from chronoamperometry and impedance spectroscopy, and we apply the Tafel slope plot to various electrocatalytic reactions. We show that similar Tafel slope values are observed from the different techniques under high-mass-transport conditions for the oxygen evolution reaction on NiFeOOH in 0.2 M KOH. However, for the alkaline hydrogen evolution reaction and the CO2 reduction reaction, no horizontal Tafel slope regions were observed. In contrast, we obtained the expected Tafel slope of 30 mV/dec for the HER on Pt in 1 M HClO4. We argue that widespread application of the Tafel slope plot, or similar numerical differentiation techniques, would result in an improved comparison of kinetic data for many electrocatalytic reactions when the traditional Tafel plot analysis is ambiguous.
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Affiliation(s)
- Onno van der Heijden
- Leiden Institute of Chemistry, Leiden University, 2333 CC Leiden, The Netherlands
| | - Sunghak Park
- Leiden Institute of Chemistry, Leiden University, 2333 CC Leiden, The Netherlands
| | - Rafaël E. Vos
- Leiden Institute of Chemistry, Leiden University, 2333 CC Leiden, The Netherlands
| | - Jordy J. J. Eggebeen
- Leiden Institute of Chemistry, Leiden University, 2333 CC Leiden, The Netherlands
| | - Marc T. M. Koper
- Leiden Institute of Chemistry, Leiden University, 2333 CC Leiden, The Netherlands
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74
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Schulpen JJM, Lam CHX, Dawley RA, Li R, Jin L, Ma T, Kessels WMM, Koester SJ, Bol AA. Nb Doping and Alloying of 2D WS 2 by Atomic Layer Deposition for 2D Transition Metal Dichalcogenide Transistors and HER Electrocatalysts. ACS APPLIED NANO MATERIALS 2024; 7:7395-7407. [PMID: 38633297 PMCID: PMC11019465 DOI: 10.1021/acsanm.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/06/2024] [Accepted: 03/14/2024] [Indexed: 04/19/2024]
Abstract
We utilize plasma-enhanced atomic layer deposition to synthesize two-dimensional Nb-doped WS2 and NbxW1-xSy alloys to expand the range of properties and improve the performance of 2D transition metal dichalcogenides for electronics and catalysis. Using a supercycle deposition process, films are prepared with compositions spanning the range from WS2 to NbS3. While the W-rich films form crystalline disulfides, the Nb-rich films form amorphous trisulfides. Through tuning the composition of the films, the electrical resistivity is reduced by 4 orders of magnitude compared to pure ALD-grown WS2. To produce Nb-doped WS2 films, we developed a separate ABC-type supercycle process in which a W precursor pulse precedes the Nb precursor pulse, thereby reducing the minimum Nb content of the film by a factor of 3 while maintaining a uniform distribution of the Nb dopant. Initial results are presented on the electrical and electrocatalytic performances of the films. Promisingly, the NbxW1-xSy films of 10 nm thickness and composition x ≈ 0.08 are p-type semiconductors and have a low contact resistivity of (8 ± 1) × 102 Ω cm to Pd/Au contacts, demonstrating their potential use in contact engineering of 2D TMD transistors.
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Affiliation(s)
- Jeff J.
P. M. Schulpen
- Department
of Applied Physics, Eindhoven University
of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Cindy H. X. Lam
- Department
of Applied Physics, Eindhoven University
of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Rebecca A. Dawley
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109, United States
| | - Ruixue Li
- Department
of Electrical and Computer Engineering, University of Minnesota, 200 Union Street Se, Minneapolis, Minnesota 55455, United States
| | - Lun Jin
- Department
of Electrical and Computer Engineering, University of Minnesota, 200 Union Street Se, Minneapolis, Minnesota 55455, United States
| | - Tao Ma
- Michigan
Center for Materials Characterization, University
of Michigan, 2800 Plymouth Road, Ann Arbor, Michigan 48109, United States
| | - Wilhelmus M. M. Kessels
- Department
of Applied Physics, Eindhoven University
of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
| | - Steven J. Koester
- Department
of Electrical and Computer Engineering, University of Minnesota, 200 Union Street Se, Minneapolis, Minnesota 55455, United States
| | - Ageeth A. Bol
- Department
of Applied Physics, Eindhoven University
of Technology, P.O. Box 513, Eindhoven 5600 MB, The Netherlands
- Department
of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109, United States
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75
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Ali Akbari MS, Nandy S, Chae KH, Najafpour MM. Iron Integration in Nickel Hydroxide Matrix vs Surface for Oxygen-Evolution Reaction: Where the Nernst Equation Does Not Work. J Phys Chem Lett 2024; 15:3591-3602. [PMID: 38527269 DOI: 10.1021/acs.jpclett.4c00604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
This study focuses on the oxygen-evolution reaction (OER) activity comparison between two forms of NiFe (hydr)oxides: compound 1, where Fe ions are applied on the surface of nickel (hydr)oxide, and compound 2, with Fe ions incorporated into the structural matrix of nickel (hydr)oxide. The observed exponential link between Coulombic energy and the total charge of the system points to a direct proportionality between the potential and the concentration of oxidized nickel ions (e.g., V ∝ [oxidized Ni]), diverging from the logarithmic relationship outlined in the Nernst equation or its modifications, which is not evident in this case. Initial visible spectroscopy indicates a notable trend toward oxidation. As, during the oxidation, more Ni is oxidized, a repulsion effect develops, diminishing the likelihood of further oxidation, and a distinct linear correlation emerges between the quantity of oxidized Ni(II) and the applied potentials.
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Affiliation(s)
- Mohammad Saleh Ali Akbari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
| | - Subhajit Nandy
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Keun Hwa Chae
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
- Department of Chemistry, Sharif University of Technology, Tehran 11365-8639, Iran
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76
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Moss B, Svane KL, Nieto-Castro D, Rao RR, Scott SB, Tseng C, Sachs M, Pennathur A, Liang C, Oldham LI, Mazzolini E, Jurado L, Sankar G, Parry S, Celorrio V, Dawlaty JM, Rossmeisl J, Galán-Mascarós JR, Stephens IEL, Durrant JR. Cooperative Effects Drive Water Oxidation Catalysis in Cobalt Electrocatalysts through the Destabilization of Intermediates. J Am Chem Soc 2024; 146:8915-8927. [PMID: 38517290 PMCID: PMC10995992 DOI: 10.1021/jacs.3c11651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 03/23/2024]
Abstract
A barrier to understanding the factors driving catalysis in the oxygen evolution reaction (OER) is understanding multiple overlapping redox transitions in the OER catalysts. The complexity of these transitions obscure the relationship between the coverage of adsorbates and OER kinetics, leading to an experimental challenge in measuring activity descriptors, such as binding energies, as well as adsorbate interactions, which may destabilize intermediates and modulate their binding energies. Herein, we utilize a newly designed optical spectroelectrochemistry system to measure these phenomena in order to contrast the behavior of two electrocatalysts, cobalt oxyhydroxide (CoOOH) and cobalt-iron hexacyanoferrate (cobalt-iron Prussian blue, CoFe-PB). Three distinct optical spectra are observed in each catalyst, corresponding to three separate redox transitions, the last of which we show to be active for the OER using time-resolved spectroscopy and electrochemical mass spectroscopy. By combining predictions from density functional theory with parameters obtained from electroadsorption isotherms, we demonstrate that a destabilization of catalytic intermediates occurs with increasing coverage. In CoOOH, a strong (∼0.34 eV/monolayer) destabilization of a strongly bound catalytic intermediate is observed, leading to a potential offset between the accumulation of the intermediate and measurable O2 evolution. We contrast these data to CoFe-PB, where catalytic intermediate generation and O2 evolution onset coincide due to weaker binding and destabilization (∼0.19 eV/monolayer). By considering a correlation between activation energy and binding strength, we suggest that such adsorbate driven destabilization may account for a significant fraction of the observed OER catalytic activity in both materials. Finally, we disentangle the effects of adsorbate interactions on state coverages and kinetics to show how adsorbate interactions determine the observed Tafel slopes. Crucially, the case of CoFe-PB shows that, even where interactions are weaker, adsorption remains non-Nernstian, which strongly influences the observed Tafel slope.
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Affiliation(s)
- Benjamin Moss
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
| | | | - David Nieto-Castro
- Institut
Català d’Investigació Química (ICIQ), Avda. Països Catalans 16, 43007, Tarragona, Spain
| | - Reshma R. Rao
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
| | - Soren B. Scott
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
| | - Cindy Tseng
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-1062, United
States
| | - Michael Sachs
- SLAC
National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - Anuj Pennathur
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-1062, United
States
| | - Caiwu Liang
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
| | - Louise I. Oldham
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
| | - Eva Mazzolini
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
| | - Lole Jurado
- Institut
Català d’Investigació Química (ICIQ), Avda. Països Catalans 16, 43007, Tarragona, Spain
| | - Gopinathan Sankar
- SLAC
National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States
| | - Stephen Parry
- Diamond
Light Source, Harwell
Science and Innovation Campus, Fermi Ave., Didcot OX11 0D, United Kingdom
| | - Veronica Celorrio
- Diamond
Light Source, Harwell
Science and Innovation Campus, Fermi Ave., Didcot OX11 0D, United Kingdom
| | - Jahan M. Dawlaty
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089-1062, United
States
| | - Jan Rossmeisl
- University
of Copenhagen, Universitetsparken
5, 2100 København
Ø, Denmark
| | - J. R. Galán-Mascarós
- Institut
Català d’Investigació Química (ICIQ), Avda. Països Catalans 16, 43007, Tarragona, Spain
- ICREA, Passeig Lluís Companys 23, 08010, Barcelona, Spain
| | - Ifan E. L. Stephens
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
| | - James R. Durrant
- Imperial
College London, Molecular Sciences
Research Hub (MSRH), 82
Wood Lane, London W120BZ, United Kingdom
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77
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Qi X, Obata K, Yui Y, Honma T, Lu X, Ibe M, Takanabe K. Potential-Rate Correlations of Supported Palladium-Based Catalysts for Aqueous Formic Acid Dehydrogenation. J Am Chem Soc 2024; 146:9191-9204. [PMID: 38500345 PMCID: PMC10996003 DOI: 10.1021/jacs.4c00101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/18/2024] [Accepted: 02/29/2024] [Indexed: 03/20/2024]
Abstract
Aqueous formic acid dehydrogenation (FAD) is a crucial process for hydrogen production, as hydrogen is a clean energy carrier. During this process, formic acid converts into hydrogen and carbon dioxide over a catalyst. Pd-based catalysts have exhibited significant potential in FAD due to their high activity and selectivity. In this study, we investigated aqueous thermal FAD in a mixture of formic acid and sodium formate using electrochemical open-circuit potential (OCP) measurement by loading the catalysts onto a conductive substrate as a working electrode. By varying the reaction conditions such as the concentration of reactants and modifying Pd with Ag, different FAD rates were obtained. Consequently, we revealed the correlation between the catalyst OCP and FAD rate; superior FAD rates reflected a more negative catalyst OCP. Furthermore, deactivation was observed across all catalysts during FAD, with a concurrent increase in catalyst OCP. Interestingly, we found that the logarithm of the FAD rate showed a linear correlation with the OCP of the catalyst during the decay phase, which we quantitatively explained based on the reaction mechanism. This study presents a new discovery that bridges thermal and electrocatalysis.
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Affiliation(s)
- Xingyu Qi
- Department
of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Keisuke Obata
- Department
of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuhki Yui
- Carbon
Neutral Development Division, Higashifuji Technical Center, Toyota Motor Corporation, 1200 Mishuku, Susono 410-1193, Shizuoka, Japan
| | - Tetsuo Honma
- Japan
Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-gun 679-5198, Hyogo, Japan
| | - Xiaofei Lu
- Department
of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Masaya Ibe
- Advanced
Material Engineering Division, Higashifuji Technical Center, Toyota Motor Corporation, 1200 Mishuku, Susono 410-1193, Shizuoka, Japan
| | - Kazuhiro Takanabe
- Department
of Chemical System Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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78
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Sun S, Guo Y, Xu G, Li J, Cai W. Enabling efficient ample-level oxygen evolution on nickel-iron Prussian blue analogue/hydroxide via hierarchical mass transfer channel construction. J Colloid Interface Sci 2024; 659:40-47. [PMID: 38157725 DOI: 10.1016/j.jcis.2023.12.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/27/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
Enhancing double-phase mass transfer capability and reducing overpotential at high currents are critical in the oxygen evolution reaction (OER) catalyst design. In this work, nickel-iron layered double hydroxide (NiFe-LDH) loaded on nickel foam (NF) was used as a self-sacrificing template for subsequent growth of nickel-iron Prussian blue (NiFe-PBA) hollow nanocubes on its sheet arrays. The triple-scale porous structure is therefore in-situ constructed in the produced NiFe-PBA@LDH/NF catalyst, where NiFe-PBA nanocubes, NiFe-LDH sheets and NF skeletons provide pores at hundred-nanometers, microns and hundred-microns, respectively. Due to the successful construction of hierarchical mass transfer channels in the catalyst, the overpotential required to deliver 1000 mA cm-2 OER is only 396 mV, which is 80 mV lower than that of NiFe-LDH/NF with a double-scale porous structure, manifesting the importance of the appropriate mass transfer channels, promoting the potential application of the NiFe-PBA@LDH/NF catalyst in industrial-scale electrolysers.
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Affiliation(s)
- Shixin Sun
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224002, China
| | - Yinghua Guo
- Hydrogen Energy Technology Innovation Center of Hubei Province, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, Hubei, China
| | - Guodong Xu
- School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng 224002, China.
| | - Jing Li
- Hydrogen Energy Technology Innovation Center of Hubei Province, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, Hubei, China.
| | - Weiwei Cai
- Hydrogen Energy Technology Innovation Center of Hubei Province, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, Hubei, China.
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79
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Wang J, Zhao L, Zou Y, Dai J, Zheng Q, Zou X, Hu L, Hou W, Wang R, Wang K, Shi Y, Zhan G, Yao Y, Zhang L. Engineering the Coordination Environment of Ir Single Atoms with Surface Titanium Oxide Amorphization for Superior Chlorine Evolution Reaction. J Am Chem Soc 2024. [PMID: 38498303 DOI: 10.1021/jacs.3c13834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
The chlorine evolution reaction (CER) is essential for industrial Cl2 production but strongly relies on the use of dimensionally stable anode (DSA) with high-amount precious Ru/Ir oxide on a Ti substrate. For the purpose of sustainable development, precious metal decrement and performance improvement are highly desirable for the development of CER anodes. Herein, we demonstrate that surface titanium oxide amorphization is crucial to regulate the coordination environment of stabilized Ir single atoms for efficient and durable chlorine evolution of Ti monolithic anodes. Experimental and theoretical results revealed the formation of four-coordinated Ir1O4 and six-coordinated Ir1O6 sites on amorphous and crystalline titanium oxides, respectively. Interestingly, the Ir1O4 sites exhibited a superior CER performance, with a mass activity about 10 and 500 times those of the Ir1O6 counterpart and DSA, respectively. Moreover, the Ir1O4 anode displayed excellent durability for 200 h, far longer than that of its Ir1O6 counterpart (2 h). Mechanism studies showed that the unsaturated Ir in Ir1O4 was the active center for chlorine evolution, which was changed to the top-coordinated O in Ir1O6. This change of active sites greatly affected the adsorption energy of Cl species, thus accounting for their different CER activity. More importantly, the amorphous structure and restrained water dissociation of Ir1O4 synergistically prevent oxygen permeation across the Ti substrate, contributing to its long-term CER stability. This study sheds light on the importance of single-atom coordination structures in the reactivity of catalysts and offers a facile strategy to prepare highly active single-atom CER anodes via surface titanium oxide amorphization.
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Affiliation(s)
- Jiaxian Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Long Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yunjie Zou
- State Key Laboratory for Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, P. R. China
| | - Jie Dai
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Qian Zheng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xingyue Zou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Lufa Hu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Wei Hou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Ruizhao Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Kaiyuan Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yanbiao Shi
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Guangming Zhan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yancai Yao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Lizhi Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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80
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Zhang J, Deng Z, Bai S, Liu C, Zhang M, Peng C, Xu X, Jia J, Luan T. Fe, N, S co-doped carbon network derived from acetate-modified Fe-ZIF-8 for oxygen reduction reaction. J Colloid Interface Sci 2024; 658:373-382. [PMID: 38113546 DOI: 10.1016/j.jcis.2023.12.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 12/21/2023]
Abstract
In this work, potassium acetate (KAc) was added during the synthesis of a Zn-Fe based metal-organic framework (Fe-ZIF-8) to increase the fixed amount of Fe while simultaneously enhancing the number of pores. Electrospinning was utilized to embed KAc-modified Fe-ZIF-8 (Fe-ZIF-8-Ac) into the polyacrylonitrile nanofiber mesh, to obtain a network composite (Fe@NC-Ac) with hierarchical porous structure. Fe@NC-Ac was co-pyrolyzed with thiourea, resulting in Fe, N, S co-doped carbon electrocatalyst. The electrochemical tests indicated that the prepared catalyst displayed relatively remarkable oxygen reduction reaction (ORR) catalytic activity, with an onset potential (Eonset) of 1.08 V (vs. reversible hydrogen electrode, RHE) and a half-wave potential (E1/2) of 0.94 V, both higher than those of the commercial Pt/C (Eonset = 0.95 V and E1/2 = 0.84 V), respectively. Assembled into Zn-air batteries, the optimized catalyst exhibited higher open circuit voltage (1.698 V) and peak power density (90 mW cm-2) than those of the commercial 20 wt% Pt/C (1.402 V and 80 mW cm-2), respectively. This work provided a straightforward manufacturing strategy for the design of hierarchical porous carbon-based ORR catalysts with desirable performance.
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Affiliation(s)
- Junyuan Zhang
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China
| | - Ziwei Deng
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China
| | - Shuli Bai
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China
| | - Changyu Liu
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China
| | - Mengchen Zhang
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China
| | - Chao Peng
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China
| | - Xiaolong Xu
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China.
| | - Jianbo Jia
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China.
| | - Tiangang Luan
- Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, School of Environmental and Chemical Engineering; Institute of Carbon Peaking and Carbon Neutralization, Wuyi University, Jiangmen 529020, China
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81
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Ganguly A, McGlynn RJ, Boies A, Maguire P, Mariotti D, Chakrabarti S. Flexible Bifunctional Electrode for Alkaline Water Splitting with Long-Term Stability. ACS APPLIED MATERIALS & INTERFACES 2024; 16:12339-12352. [PMID: 38425008 PMCID: PMC10941191 DOI: 10.1021/acsami.3c12944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/25/2024] [Accepted: 02/13/2024] [Indexed: 03/02/2024]
Abstract
Progress in electrochemical water-splitting devices as future renewable and clean energy systems requires the development of electrodes composed of efficient and earth-abundant bifunctional electrocatalysts. This study reveals a novel flexible and bifunctional electrode (NiO@CNTR) by hybridizing macroscopically assembled carbon nanotube ribbons (CNTRs) and atmospheric plasma-synthesized NiO quantum dots (QDs) with varied loadings to demonstrate bifunctional electrocatalytic activity for stable and efficient overall water-splitting (OWS) applications. Comparative studies on the effect of different electrolytes, e.g., acid and alkaline, reveal a strong preference for alkaline electrolytes for the developed NiO@CNTR electrode, suggesting its bifunctionality for both HER and OER activities. Our proposed NiO@CNTR electrode demonstrates significantly enhanced overall catalytic performance in a two-electrode alkaline electrolyzer cell configuration by assembling the same electrode materials as both the anode and the cathode, with a remarkable long-standing stability retaining ∼100% of the initial current after a 100 h long OWS run, which is attributed to the "synergistic coupling" between NiO QD catalysts and the CNTR matrix. Interestingly, the developed electrode exhibits a cell potential (E10) of only 1.81 V with significantly low NiO QD loading (83 μg/cm2) compared to other catalyst loading values reported in the literature. This study demonstrates a potential class of carbon-based electrodes with single-metal-based bifunctional catalysts that opens up a cost-effective and large-scale pathway for further development of catalysts and their loading engineering suitable for alkaline-based OWS applications and green hydrogen generation.
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Affiliation(s)
- Abhijit Ganguly
- School
of Engineering, Ulster University, Belfast BT15 1AP, Northern Ireland, U.K.
| | - Ruairi J. McGlynn
- School
of Engineering, Ulster University, Belfast BT15 1AP, Northern Ireland, U.K.
| | - Adam Boies
- Department
of Engineering, University of Cambridge, Cambridge CB2 1PZ, U.K.
| | - Paul Maguire
- School
of Engineering, Ulster University, Belfast BT15 1AP, Northern Ireland, U.K.
| | - Davide Mariotti
- School
of Engineering, Ulster University, Belfast BT15 1AP, Northern Ireland, U.K.
| | - Supriya Chakrabarti
- School
of Engineering, Ulster University, Belfast BT15 1AP, Northern Ireland, U.K.
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82
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Liu J, He L, Tao Z, Li S, Wang C, Zhang Y, Zhang S, Du M, Zhang Z. Ferric Oxide Nanocrystals-Embedded Co/Fe-MOF with Self-Tuned d-Band Centers for Boosting Urea-Assisted Overall Water Splitting. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306273. [PMID: 37936322 DOI: 10.1002/smll.202306273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/16/2023] [Indexed: 11/09/2023]
Abstract
A novel semiconductive Co/Fe-MOF embedded with Fe2 O3 nanocrystals (Fe2 O3 @CoFe-MOF) is developed as a trifunctional electrocatalyst for the urea oxidation reaction (UOR), oxygen evolution reaction (OER), and hydrogen evolution reaction for enhancing the efficiency of the hydrogen production via the urea-assisted overall water splitting. Fe2 O3 @CoFe-TPyP-MOF comprises unsaturated metal-nitrogen coordination sites, affording enriched defects, self-tuned d-band centers, and efficient π-π interaction between different layers. Density functional theory calculation confirms that the adsorption of urea can be optimized at Fe2 O3 @CoFe-TPyP-MOF, realizing the efficient adsorption of intermediates and desorption of the final product of CO2 and N2 characterized by the in situ Fourier transform infrared spectroscopy. The two-electrode urea-assisted water splitting device-assembled with Fe2 O3 @CoFe-TPyP-MOF illustrates a low cell voltage of 1.41 V versus the reversible hydrogen electrode at the current density of 10 mA cm-2 , attaining the hydrogen production rate of 13.13 µmol min-1 in 1 m KOH with 0.33 m urea. The in situ electrochemical Raman spectra and other basic characterizations of the used electrocatalyst uncover that Fe2 O3 @CoFe-TPyP-MOF undergoes the reversible structural reconstruction after the UOR test, while it demonstrates the irreversible reconstruction after the OER measurement. This work redounds the progress of urea-assisted water spitting for hydrogen production.
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Affiliation(s)
- Jiameng Liu
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Linghao He
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Zheng Tao
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Sizhuan Li
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Changbao Wang
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Yinpeng Zhang
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Shuai Zhang
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Miao Du
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
| | - Zhihong Zhang
- College of Material and Chemical Engineering, Institute of New Energy Science and Technology, School of Future Hydrogen Energy Technology, Zhengzhou University of Light Industry, Zhengzhou, 450001, P. R. China
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83
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Lee J, Lee J, Jin X, Kim H, Hwang SJ. Atomically-Thin Holey 2D Nanosheets of Defect-Engineered MoN-Mo 5 N 6 Composites as Effective Hybridization Matrices. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306781. [PMID: 37806758 DOI: 10.1002/smll.202306781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/27/2023] [Indexed: 10/10/2023]
Abstract
The defect engineering of inorganic solids has received significant attention because of its high efficacy in optimizing energy-related functionalities. Consequently, this approach is effectively leveraged in the present study to synthesize atomically-thin holey 2D nanosheets of a MoN-Mo5 N6 composite. This is achieved by controlled nitridation of assembled MoS2 monolayers, which induced sequential cation/anion migration and a gradual decrease in the Mo valency. Precise control of the interlayer distance of the MoS2 monolayers via assembly with various tetraalkylammonium ions is found to be crucial for synthesizing sub-nanometer-thick holey MoN-Mo5 N6 nanosheets with a tunable anion/cation vacancy content. The holey MoN-Mo5 N6 nanosheets are employed as efficient immobilization matrices for Pt single atoms to achieve high electrocatalytic mass activity, decent durability, and low overpotential for the hydrogen evolution reaction (HER). In situ/ex situ spectroscopy and density functional theory (DFT) calculations reveal that the presence of cation-deficient Mo5 N6 domain is crucial for enhancing the interfacial interactions between the conductive molybdenum nitride substrate and Pt single atoms, leading to enhanced electron injection efficiency and electrochemical stability. The beneficial effects of the Pt-immobilizing holey MoN-Mo5 N6 nanosheets are associated with enhanced electronic coupling, resulting in improvements in HER kinetics and interfacial charge transfer.
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Affiliation(s)
- Jihyeong Lee
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Junsoo Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Xiaoyan Jin
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hyungjun Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Seong-Ju Hwang
- Department of Materials Science and Engineering, College of Engineering, Yonsei University, Seoul, 03722, Republic of Korea
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84
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Hu X, Gao Y, Luo X, Xiong J, Chen P, Wang B. Insight into the intrinsic activity of various transition metal sulfides for efficient hydrogen evolution reaction. NANOSCALE 2024; 16:4909-4918. [PMID: 38334962 DOI: 10.1039/d3nr06456e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
The electrocatalytic hydrogen evolution reaction (HER) is an efficient approach to convert sustainable energy sources into clean energy carriers, H2. Although various transition metal sulfides (TMSs) have been reported as promising alternatives to precious metal-based catalysts, the top catalyst among TMSs remains unclear as there is a dearth of high-quality studies that provide a 'fair' comparison of the performance of these TMSs synthesized and tested under the same conditions. In this work, layered transition metal sulfides (MS2: MoS2, WS2, VS2) and non-layered transition metal sulfides (MxSy: FeS2, CoSx, NiS) were obtained by a straightforward hydrothermal method, and thus a comprehensive platform was established for the comparison of the intrinsic activity of these materials in the HER. Experimental results demonstrate that layered MS2 exhibits better performance than non-layered MxSy in acidic electrolytes, while CoSx and NiS can catalyze hydrogen evolution more effectively under alkaline conditions due to structural reconfiguration. MoS2 shows the best HER performance in both acidic and alkaline electrolytes, particularly in 1 M KOH solution. This work provides guidance for the optimal design of transition metal electrocatalysts, and structural engineering strategies can be used to further enhance their catalytic activity.
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Affiliation(s)
- Xinran Hu
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China.
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China.
| | - Yang Gao
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinying Luo
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junjie Xiong
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Chen
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China.
| | - Bin Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
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85
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Butburee T, Ponchai J, Khemthong P, Mano P, Chakthranont P, Youngjan S, Phanthasri J, Namuangruk S, Faungnawakij K, Wang X, Chen Y, Zhang L. General Pyrolysis for High-Loading Transition Metal Single Atoms on 2D-Nitro-Oxygeneous Carbon as Efficient ORR Electrocatalysts. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10227-10237. [PMID: 38367256 PMCID: PMC10910467 DOI: 10.1021/acsami.3c18548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 02/19/2024]
Abstract
Single-atom catalysts (SACs) possess the potential to involve the merits of both homogeneous and heterogeneous catalysts altogether and thus have gained considerable attention. However, the large-scale synthesis of SACs with rich isolate-metal sites by simple and low-cost strategies has remained challenging. In this work, we report a facile one-step pyrolysis that automatically produces SACs with high metal loading (5.2-15.9 wt %) supported on two-dimensional nitro-oxygenated carbon (M1-2D-NOC) without using any solvents and sacrificial templates. The method is also generic to various transition metals and can be scaled up to several grams based on the capacity of the containers and furnaces. The high density of active sites with N/O coordination geometry endows them with impressive catalytic activities and stability, as demonstrated in the oxygen reduction reaction (ORR). For example, Fe1-2D-NOC exhibits an onset potential of 0.985 V vs RHE, a half-wave potential of 0.826 V, and a Tafel slope of -40.860 mV/dec. Combining the theoretical and experimental studies, the high ORR activity could be attributed its unique FeO-N3O structure, which facilitates effective charge transfer between the surface and the intermediates along the reaction, and uniform dispersion of this active site on thin 2D nanocarbon supports that maximize the exposure to the reactants.
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Affiliation(s)
- Teera Butburee
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
- Shanghai
Synchrotron Radiation Facility, Shanghai
Advanced Research Institute, Chinese Academy of Sciences (CAS), No. 239, Zhangheng Rd., New Pudong District, Shanghai 201204, P.R. China
| | - Jitprabhat Ponchai
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Pongtanawat Khemthong
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Poobodin Mano
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Pongkarn Chakthranont
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Saran Youngjan
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Jakkapop Phanthasri
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Supawadee Namuangruk
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Kajornsak Faungnawakij
- National
Science and Technology Development Agency, National Nanotechnology Center, 111 Thailand Science Park, Pathum Thani 12120, Thailand
| | - Xingya Wang
- Shanghai
Synchrotron Radiation Facility, Shanghai
Advanced Research Institute, Chinese Academy of Sciences (CAS), No. 239, Zhangheng Rd., New Pudong District, Shanghai 201204, P.R. China
| | - Yu Chen
- Shanghai
Synchrotron Radiation Facility, Shanghai
Advanced Research Institute, Chinese Academy of Sciences (CAS), No. 239, Zhangheng Rd., New Pudong District, Shanghai 201204, P.R. China
| | - Lijuan Zhang
- Shanghai
Synchrotron Radiation Facility, Shanghai
Advanced Research Institute, Chinese Academy of Sciences (CAS), No. 239, Zhangheng Rd., New Pudong District, Shanghai 201204, P.R. China
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86
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Saravanan L, Anand P, Fu YP, Ma YR, Yeh WC. Enhancing the Hydrogen Evolution Performance of Tungsten Diphosphide on Carbon Fiber through Ruthenium Modification. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38419190 DOI: 10.1021/acsami.3c17114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Hydrogen-based energy systems hold promise for sustainable development and carbon neutrality, minimizing environmental impact with electrolysis as the preferred fossil-fuel-free hydrogen generation method. Effective electrocatalysts are required to reduce energy consumption and improve kinetics, given the need for additional voltage (overpotential, η) despite the theoretical water splitting potential of 1.23 V. To date, platinum has been acknowledged as the most effective but expensive hydrogen evolution reaction (HER) catalyst. Hence, we introduce a cost-effective (∼2-fold cheaper) ruthenium-modified tungsten diphosphide (Ru/WP2) catalyst on carbon fiber for HER in ∼0.5 M H2SO4, with η ≈ 34 mV at -10 mA cm-2 which can be comparable (only ∼2-fold higher) to benchmark Pt/C (η ≈ 17 mV). The HER performance of WP2 can be enhanced through the modification of ruthenium, as indicated by the electrochemical characterizations. Considering the Tafel value of ∼40 ± 0.2 mV dec-1, it can be inferred that Ru/WP2 follows the Volmer-Heyrovsky reaction pathway for hydrogen generation. Furthermore, the Faradaic efficiency estimation indicates that Ru/WP2 demonstrates a minimal loss of electrons during the electrochemical reaction with an estimated value of ∼98.7 ± 1.4%. Therefore, this study could emphasize the potential of the Ru/WP2 electrode in advancing sustainable hydrogen production through water splitting.
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Affiliation(s)
- Lokesh Saravanan
- Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan
| | - Pandiyarajan Anand
- Department of Materials Science and Engineering, National Dong Hwa University, Hualien 97401, Taiwan
| | - Yen-Pei Fu
- Department of Materials Science and Engineering, National Dong Hwa University, Hualien 97401, Taiwan
| | - Yuan-Ron Ma
- Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan
| | - Wang-Chi Yeh
- Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan
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87
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Ng LS, Chah ELC, Ngieng MH, Boong SK, Chong C, Raja Mogan T, Lee JK, Li H, Lee CLK, Lee HK. Chaotropic Nanoelectrocatalysis: Chemically Disrupting Water Intermolecular Network at the Point-of-Catalysis to Boost Green Hydrogen Electrosynthesis. Angew Chem Int Ed Engl 2024; 63:e202317751. [PMID: 38179729 DOI: 10.1002/anie.202317751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/27/2023] [Accepted: 01/03/2024] [Indexed: 01/06/2024]
Abstract
Efficient green hydrogen production through electrocatalytic water splitting serves as a powerful catalyst for realizing a carbon-free hydrogen economy. However, current electrocatalytic designs face challenges such as poor hydrogen evolution reaction (HER) performance (Tafel slope, 100-140 mV dec-1 ) because water molecules are thermodynamically trapped within their extensive hydrogen bonding network. Herein, we drive efficient HER by manipulating the local water microenvironment near the electrocatalyst. This is achieved by functionalizing the nanoelectrocatalyst's surface with a monolayer of chaotropic molecules to chemically weaken water-water interactions directly at the point-of-catalysis. Notably, our chaotropic design demonstrates a superior Tafel slope (77 mV dec-1 ) and the lowest overpotential (0.3 V at 10 mA cm-2 ECSA ), surpassing its kosmotropic counterparts (which reinforces the water molecular network) and previously reported electrocatalytic designs by up to ≈2-fold and ≈3-fold, respectively. Comprehensive mechanistic investigations highlight the critical role of chaotropic surface chemistry in disrupting the water intermolecular network, thereby releasing free/weakly bound water molecules that strongly interact with the electrocatalyst to boost HER. Our study provides a unique molecular approach that can be readily integrated with emerging electrocatalytic materials to rapidly advance the electrosynthesis of green hydrogen, holding immense promise for sustainable chemical and energy applications.
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Affiliation(s)
- Li Shiuan Ng
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Eu Li Chloe Chah
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Min Hui Ngieng
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Siew Kheng Boong
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Carice Chong
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Tharishinny Raja Mogan
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Jinn-Kye Lee
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Haitao Li
- School of Chemistry and Chemical Engineering, Yangzhou University, 225002, Yangzhou, P R. China
| | - Chi-Lik Ken Lee
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), The Agency for Science, Technology and Research (A*STAR), Jurong Island, 627833, Singapore, Singapore
| | - Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
- Institute of Materials Research and Engineering, The Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, #08-03, Innovis, 138634, Singapore, Singapore
- Centre for Hydrogen Innovations, National University of Singapore, E8, 1 Engineering Drive 3, 117580, Singapore, Singapore
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88
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Razzaq S, Exner KS. Why efficient bifunctional hydrogen electrocatalysis requires a change in the reaction mechanism. iScience 2024; 27:108848. [PMID: 38313059 PMCID: PMC10837630 DOI: 10.1016/j.isci.2024.108848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/31/2023] [Accepted: 01/04/2024] [Indexed: 02/06/2024] Open
Abstract
Hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR) are both two-electron processes that culminate in the formation or consumption of gaseous hydrogen in an electrolyzer or a fuel cell, respectively. Unitized regenerative proton exchange membrane fuel cells merge these two functionalities into one device, allowing to switch between the two modes of operation. This prompts the quest for efficient bifunctional electrode materials catalyzing the HER and HOR with reasonable reaction rates at low overpotentials. In the present study using a data-driven framework, we identify a general criterion for efficient bifunctional performance in the hydrogen electrocatalysis, which refers to a change in the reaction mechanism when switching from cathodic to anodic working conditions. The obtained insight can be used in future studies based on density functional theory to pave the design of efficient HER and HOR catalysts by a dedicated consideration of the kinetics in the analysis of reaction mechanisms.
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Affiliation(s)
- Samad Razzaq
- University Duisburg-Essen, Faculty of Chemistry, Theoretical Inorganic Chemistry, Universitätsstraße 5, 45141 Essen, Germany
| | - Kai S Exner
- University Duisburg-Essen, Faculty of Chemistry, Theoretical Inorganic Chemistry, Universitätsstraße 5, 45141 Essen, Germany
- Cluster of Excellence RESOLV, Bochum, Germany
- Center for Nanointegration (CENIDE) Duisburg-Essen, Duisburg, Germany
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89
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Yang S, Yue K, Liu X, Li S, Zheng H, Yan Y, Cao R, Zhang W. Electrocatalytic water oxidation with manganese phosphates. Nat Commun 2024; 15:1410. [PMID: 38360868 PMCID: PMC10869713 DOI: 10.1038/s41467-024-45705-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 02/01/2024] [Indexed: 02/17/2024] Open
Abstract
As inspired by the Mn4CaO5 oxygen evolution center in nature, Mn-based electrocatalysts have received overwhelming attention for water oxidation. However, the understanding of the detailed reaction mechanism has been a long-standing problem. Herein, homologous KMnPO4 and KMnPO4•H2O with 4-coordinated and 6-coordinated Mn centers, respectively, are prepared. The two catalysts constitute an ideal platform to study the structure-performance correlation. The presence of Mn(III), Mn(IV), and Mn(V) intermediate species are identified during water oxidation. The Mn(V)=O species is demonstrated to be the substance for O-O bond formation. In KMnPO4•H2O, the Mn coordination structure did not change significantly during water oxidation. In KMnPO4, the Mn coordination structure changed from 4-coordinated [MnO4] to 5-coordinated [MnO5] motif, which displays a triangular biconical configuration. The structure flexibility of [MnO5] is thermodynamically favored in retaining Mn(III)-OH and generating Mn(V)=O. The Mn(V)=O species is at equilibrium with Mn(IV)=O, the concentration of which determines the intrinsic activity of water oxidation. This study provides a clear picture of water oxidation mechanism on Mn-based systems.
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Affiliation(s)
- Shujiao Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Kaihang Yue
- Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS), Shanghai, 200050, China
| | - Xiaohan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Sisi Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Haoquan Zheng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Ya Yan
- Shanghai Institute of Ceramics, Chinese Academy of Sciences (SICCAS), Shanghai, 200050, China.
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education; School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China.
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90
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Clua Estivill M, Baez JF, Blondeau P, Andrade FJ. Electrochemical Pixels: Semi-open electrochemical cells with a vertically stacked design. Biosens Bioelectron 2024; 246:115877. [PMID: 38042050 DOI: 10.1016/j.bios.2023.115877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 12/04/2023]
Abstract
A novel electrochemical cell design in a vertically stacked configuration is presented. Through a layered structure using a top macroporous working electrode, a polyelectrolyte, and a bottom metallic conductor a standalone electrochemical cell with an internal reference electrode is built. This sensor allows monitoring an electrochemical property of an external solution with only one electrode in direct contact with the sample. Using paper-based platinum electrode for the porous top electrode and Nafion as polyelectrolyte material, the self-powered detection of hydrogen peroxide is performed. The system can be operated in multiple modes. In a capacitive way, the open circuit potential is measured. Alternatively, in a self-powered current mode, the system emulates a fuel cell. Additionally, a potential-current switched mode is also demonstrated. Because of this unique design and operational features this sensor is considered as an electrochemical pixel. To further demonstrate the advantages of this device, the detection of glucose is performed by building an array of sensors using a single back (reference) electrode and multiple working electrodes. These results lay the groundwork for the development of a new generation of simple and low cost biochemical sensors and electrochemical sensing arrays.
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Affiliation(s)
- Marc Clua Estivill
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain
| | - Jhonattan F Baez
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain
| | - Pascal Blondeau
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain
| | - Francisco J Andrade
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, 43007, Tarragona, Spain.
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91
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Nayek A, Dey S, Patra S, Rana A, Serrano PN, George SJ, Cramer SP, Ghosh Dey S, Dey A. Facile electrocatalytic proton reduction by a [Fe-Fe]-hydrogenase bio-inspired synthetic model bearing a terminal CN - ligand. Chem Sci 2024; 15:2167-2180. [PMID: 38332837 PMCID: PMC10848691 DOI: 10.1039/d3sc05397k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/22/2023] [Indexed: 02/10/2024] Open
Abstract
An azadithiolate bridged CN- bound pentacarbonyl bis-iron complex, mimicking the active site of [Fe-Fe] H2ase is synthesized. The geometric and electronic structure of this complex is elucidated using a combination of EXAFS analysis, infrared and Mössbauer spectroscopy and DFT calculations. The electrochemical investigations show that complex 1 effectively reduces H+ to H2 between pH 0-3 at diffusion-controlled rates (1011 M-1 s-1) i.e. 108 s-1 at pH 3 with an overpotential of 140 mV. Electrochemical analysis and DFT calculations suggests that a CN- ligand increases the pKa of the cluster enabling hydrogen production from its Fe(i)-Fe(0) state at pHs much higher and overpotential much lower than its precursor bis-iron hexacarbonyl model which is active in its Fe(0)-Fe(0) state. The formation of a terminal Fe-H species, evidenced by spectroelectrochemistry in organic solvent, via a rate determining proton coupled electron transfer step and protonation of the adjacent azadithiolate, lowers the kinetic barrier leading to diffusion controlled rates of H2 evolution. The stereo-electronic factors enhance its catalytic rate by 3 order of magnitude relative to a bis-iron hexacarbonyl precursor at the same pH and potential.
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Affiliation(s)
- Abhijit Nayek
- School of Chemical Science, Indian Association for the Cultivation of Science Kolkata 700032 India
| | - Subal Dey
- School of Chemical Science, Indian Association for the Cultivation of Science Kolkata 700032 India
| | - Suman Patra
- School of Chemical Science, Indian Association for the Cultivation of Science Kolkata 700032 India
| | - Atanu Rana
- School of Chemical Science, Indian Association for the Cultivation of Science Kolkata 700032 India
| | - Pauline N Serrano
- Department of Chemistry, University of California Davis CA 94616 USA
| | - Simon J George
- Department of Chemistry, University of California Davis CA 94616 USA
- SETI Institute 339 Bernardo Ave, Suite, 200 Mountain View CA 94043 USA
| | - Stephen P Cramer
- Department of Chemistry, University of California Davis CA 94616 USA
- Physical Biosciences Division, Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- SETI Institute 339 Bernardo Ave, Suite, 200 Mountain View CA 94043 USA
| | - Somdatta Ghosh Dey
- School of Chemical Science, Indian Association for the Cultivation of Science Kolkata 700032 India
| | - Abhishek Dey
- School of Chemical Science, Indian Association for the Cultivation of Science Kolkata 700032 India
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92
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Thirumalasetty AB, Pamula S, Krishnan T, Khade V, Sharief P, Kota Venkata SK, Adiraj S, Wuppulluri M. Energy storage and catalytic behaviour of cmWave assisted BZT and flexible electrospun BZT fibers for energy harvesting applications. Sci Rep 2024; 14:2650. [PMID: 38302664 PMCID: PMC10834441 DOI: 10.1038/s41598-024-52705-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/22/2024] [Indexed: 02/03/2024] Open
Abstract
High-performance lead-free Barium Zirconium Titanate (BZT) based ceramics have emerged as a potential candidate for applications in energy storage, catalysis for electro chemical energy conversion and energy harvesting devices as presented in this work. In the present study hybrid microwave sintered BZT are studied for dielectric, ferroelectric and phase transition properties. BZT ceramic exhibits tetragonal structure as confirmed by the Retvield refinement studies. XPS studies confirms the elemental composition of BZT and presence of Zr. Polarization versus electric field hysteresis loops confirms the ferroelectric behaviour of BZT ceramic. Encouragingly, the BZT showed a moderate energy storage efficiency of 30.7 % and relatively good electro chemical energy conversion (HER). Excellent catalytic activity observed for BZT electrode in acid medium with low Tafel slope 77 mV dec-1. Furthermore, electrospun nanofibers made of PVDF-HFP and BZT are used to make flexible piezoelectric nano generators (PENGs). FTIR studies show that the 16 wt% BZT composite ink exhibits a higher electroactive beta phase. The optimized open-circuit voltage and short circuit current of the flexible PENG exhibits 7Vpp and 750 nA under an applied force of 3N. Thus, flexible and self-powered BZT PENGs are alternative source of energy due to its reliability, affordability and environmental-friendly nature.
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Affiliation(s)
- Avanish Babu Thirumalasetty
- Department of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamilnadu, 632014, India
| | - Siva Pamula
- Department of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamilnadu, 632014, India
| | | | - Vaishnavi Khade
- Department of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamilnadu, 632014, India
| | - Pathan Sharief
- Department of nanotechnology, Deagu Gyeongbuk Institute of Science and Technology, Deagu, South Korea
| | - Siva Kumar Kota Venkata
- Ceramic Composite Materials Laboratory, Department of Physics, Sri Krishnadevaraya University, Anantapuram, Andhra Pradesh, 515003, India
| | - Srinivas Adiraj
- Defence Metallurgical Research Laboratory Kanchanbagh, Hyderabad, India
| | - Madhuri Wuppulluri
- Ceramic Composites Laboratory, Centre for Functional Materials, Vellore Institute of Technology, Vellore, Tamilnadu, 632014, India.
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93
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Huo J, Ge R, Liu Y, Li Y, Liao T, Yang J, Zhang J, Li S, Fei B, Li W. Heterointerface manipulation in the architecture of Co-Mo 2C@NC boosts water electrolysis. J Colloid Interface Sci 2024; 655:963-975. [PMID: 37953134 DOI: 10.1016/j.jcis.2023.10.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/14/2023]
Abstract
Heterostructures with tunable electronic properties have shown great potential in water electrolysis for the replacement of current benchmark precious metals. However, constructing heterostructures with sufficient interfaces to strengthen the synergistic effect of multiple species still remains a challenge due to phase separation. Herein, an efficient electrocatalyst composed of a nanosized cobalt/Mo2C heterostructure anchored on N-doped carbon (Co-Mo2C@NC) was achieved by in situ topotactic phase transformation. With the merits of high conductivity, hierarchical pores, and strong electronic interaction between Co and Mo2C, the Co-Mo2C@5NC-4 catalyst shows excellent activity with a low overpotential for the hydrogen evolution reaction (HER, 89 mV@10 mA cm-2 in alkaline medium; 143 mV@10 mA cm-2 in acidic medium) and oxygen evolution reaction (OER, 356 mV@10 mA cm-2 in alkaline medium), as well as high stability. Furthermore, this catalyst in an electrolyzer shows efficient activity for overall water splitting and long-term durability. Theoretical calculations reveal the optimized adsorption-desorption behaviour of hydrogen intermediates on the generated cobalt layered hydroxide (Co LDH)/Mo2C interfaces, resulting in boosting alkaline water electrolysis. This work proposes a new interface-engineering perspective for the construction of high-activity heterostructures for electrochemical conversion.
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Affiliation(s)
- Juanjuan Huo
- Institute of Energy Materials Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Riyue Ge
- Institute of Energy Materials Science, University of Shanghai for Science and Technology, Shanghai 200093, China; School of Fashion & Textiles, The Hong Kong Polytechnic University, Hong Kong S.A.R, 999077, China.
| | - Yang Liu
- Institute for Sustainable Energy, Shanghai University, Shanghai 200444, China
| | - Ying Li
- Institute for Sustainable Energy, Shanghai University, Shanghai 200444, China; School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Ting Liao
- School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Australia
| | - Jack Yang
- School of Materials Science and Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Jiujun Zhang
- Institute for Sustainable Energy, Shanghai University, Shanghai 200444, China
| | - Sean Li
- School of Materials Science and Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Bin Fei
- School of Fashion & Textiles, The Hong Kong Polytechnic University, Hong Kong S.A.R, 999077, China.
| | - Wenxian Li
- School of Materials Science and Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia.
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94
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Xiao L, Yu W, Liu J, Luan S, Pei W, Cui X, Jiang L. Co 3Fe 7/CoC x nanoparticles encapsulated in nitrogen-doped carbon nanotubes synergistically promote the oxygen reduction reaction in Zn-air batteries. J Colloid Interface Sci 2024; 655:427-438. [PMID: 37951000 DOI: 10.1016/j.jcis.2023.11.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/13/2023]
Abstract
Efficient and stable non-precious metal catalysts (NPMCs) for the oxygen reduction reaction (ORR) are crucial for the advancement of Zn-air batteries. Herein, we report a supramolecular self-scarifying template and confinement pyrolysis strategy to obtain an efficient ORR catalyst of well-dispersed Co3Fe7/CoCx heterostructure nanoparticles encapsulated by nitrogen-doped carbon nanotubes (Co3Fe7/CoCx@N-CNT). The as-synthesized Co3Fe7/CoCx@N-CNT catalyst exhibited outstanding ORR activity, with a half-wave potential of 0.88 V versus a reversible hydrogen electrode, and good stability. The Zn-air battery based on the Co3Fe7/CoCx@N-CNT cathode achieved a peak power density of 265 mW cm-2 and a durability of over 200 h, which is superior to most reported NPMCs and even the Pt/C counterpart. The physical characterization and electrochemical poisoning experiments revealed that the Co3Fe7/CoCx nanoparticles in the core along with pyridine N and Fe-Nx hosted in the carbon nanotube all acted as active sites for the ORR. Further theoretical calculations showed that the charge redistribution between the Co3Fe7/CoCx nanoparticles and the Fe-Nx carbon overlayers downshifted the d-band center of Fe and optimized the adsorption ability, which boosted the ORR kinetics. This work provides an effective strategy to synthesize non-precious metal ORR catalysts with multiple active sites and highlights the synergistic role of encapsulated nanoparticles and carbon support.
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Affiliation(s)
- Lang Xiao
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Wanqing Yu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Jing Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China.
| | - Shankui Luan
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Wenyu Pei
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Xuejing Cui
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Luhua Jiang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China.
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95
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Dao V, Di Liberto G, Yadav S, Uthirakumar P, Chen K, Pacchioni G, Lee IH. Pt Single Atoms Supported on Defect Ceria as an Active and Stable Dual-Site Catalyst for Alkaline Hydrogen Evolution. NANO LETTERS 2024; 24:1261-1267. [PMID: 38242169 DOI: 10.1021/acs.nanolett.3c04237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
This work evaluates the feasibility of alkaline hydrogen evolution reaction (HER) using Pt single-atoms (1.0 wt %) on defect-rich ceria (Pt1/CeOx) as an active and stable dual-site catalyst. The catalyst displayed a low overpotential and a small Tafel slope in an alkaline medium. Moreover, Pt1/CeOx presented a high mass activity and excellent durability, competing with those of the commercial Pt/C (20 wt %). In this picture, the defective CeOx is active for water adsorption and dissociation to create H* intermediates, providing the first site where the reaction occurs. The H* intermediate species then migrate to adsorb and react on the Pt2+ isolated atoms, the site where H2 is formed and released. DFT calculations were also performed to obtain mechanistic insight on the Pt1/CeOx catalyst for the HER. The results indicate a new possibility to improve the state-of-the-art alkaline HER catalysts via a combined effect of the O vacancies on the ceria support and Pt2+ single atoms.
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Affiliation(s)
- Vandung Dao
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Giovanni Di Liberto
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, Via Roberto Cozzi 55, Milano 20125, Italy
| | - Sunny Yadav
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Periyayya Uthirakumar
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Kai Chen
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Gianfranco Pacchioni
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, Via Roberto Cozzi 55, Milano 20125, Italy
| | - In-Hwan Lee
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
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96
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Jin Y, Fu W, Wen Z, Tan L, Chen Z, Wu H, Wang PP. Chirality Engineering of Colloidal Copper Oxide Nanostructures for Tailored Spin-Polarized Catalysis. J Am Chem Soc 2024; 146:2798-2804. [PMID: 38145451 DOI: 10.1021/jacs.3c12965] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
The combination of the chiral concept and inorganic nanostructures holds great potential for significantly impacting catalytic processes and products. However, the synthesis of inorganic nanomaterials with engineered chiroptical activity and identical structure and size presents a substantial challenge, impeding exploration of the relationship between chirality (optical activity) and catalytic efficiency. Here, we present a facile wet-chemical synthesis for achieving intrinsic and tunable chiroptical activity within colloidal copper oxide nanostructures. These nanostructures exhibit strong spin-polarization selectivity compared with their achiral counterparts. More importantly, the ability to engineer chiroptical activity within the same type of chiral nanostructures allows for the manipulation of spin-dependent catalysis, facilitating a study of the connection between the chiroptical magnitude (asymmetric factor) and catalytic performance in inorganic nanostructures. Specifically, using these materials as model catalysts in a proof-of-concept catalytic reaction, we reveal a linear correlation between the asymmetric factor of chiral nanomaterials and the efficiency of the catalytic reaction. This work paves the way for the development of chiral inorganic nanosystems and their application in catalysis through chiroptical engineering.
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Affiliation(s)
- Yiran Jin
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Wenlong Fu
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Zhihao Wen
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Lili Tan
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Zhi Chen
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Hao Wu
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Peng-Peng Wang
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
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97
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Ocuane N, Ge Y, Sandoval-Pauker C, Villagrán D. Bifunctional porphyrin-based metal-organic polymers for electrochemical water splitting. Dalton Trans 2024; 53:2306-2317. [PMID: 38204353 DOI: 10.1039/d3dt03371f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Electrochemical water splitting offers the potential for environmentally friendly hydrogen and oxygen gas generation. Here, we present the synthesis, characterization, and electrochemical analyses of four organic polymers where metalloporphyrins are the active center nodes. These materials were obtained from the polymerization reaction of poly(p-phenylene terephtalamide) (PPTA) with the respective amino-functionalized metalloporphyrins, where M = Fe, 1; Co, 2; Ni, 3; Cu, 4. Scanning and transmission electron microscopy images (SEM and TEM) show that these polymers exhibit a layer-type morphology, which is attributed to hydrogen bonding and π-π stacking between the metalloporphyrin nodes. The synthesized materials were characterized by X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), UV-Vis spectroscopy, and Fourier-transform infrared spectroscopy (FT-IR). Among the materials studied, the cobalt-based polymer, 2, demonstrates a bifunctional electrocatalytic activity for oxygen (OER) and hydrogen (HER) evolution reactions with overpotentials (η10) of 337 mV and 435 mV, respectively. The Fe, 1, and Ni, 2, polymers are less active for HER with maximum current densities (jmax) of 12.6 and 19.1 mA cm-2 and η10 678 mV, 644 mV. Polymer 2 achieves a jmax of 37.7 mA cm-2 for HER and 133 mA cm-2 for OER. The copper-based material, 4, on the other hand, shows selectivity towards HER with an overpotential (η) of 436 mV and a maximum current density (j) of 45.5 mA cm-2. The bifunctional electrocatalytic performance was tested in the overall water-splitting setup, where polymer 2 requires a cell voltage of 1.64 V at 10 mA cm-2. This work presents a novel approach to heterogenized molecular systems, providing materials with exceptional structural characteristics and enhanced electrocatalytic capabilities.
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Affiliation(s)
- Neidy Ocuane
- Department of Chemistry and Biochemistry, The University of Texas - El Paso, El Paso, Texas 79968, USA.
| | - Yulu Ge
- Department of Chemistry and Biochemistry, The University of Texas - El Paso, El Paso, Texas 79968, USA.
| | - Christian Sandoval-Pauker
- Department of Chemistry and Biochemistry, The University of Texas - El Paso, El Paso, Texas 79968, USA.
| | - Dino Villagrán
- Department of Chemistry and Biochemistry, The University of Texas - El Paso, El Paso, Texas 79968, USA.
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98
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Kumar MM, Aparna C, Nayak AK, Waghmare UV, Pradhan D, Raj CR. Surface Tailoring-Modulated Bifunctional Oxygen Electrocatalysis with CoP for Rechargeable Zn-Air Battery and Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2024; 16:3542-3551. [PMID: 38215005 DOI: 10.1021/acsami.3c17349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
The transition metal phosphide (TMP)-based functional electrocatalysts are very promising for the development of electrochemical energy conversion and storage devices including rechargeable metal-air batteries and water electrolyzer. Tuning the electrocatalytic activity of TMPs is one of the vital steps to achieve the desired performance of these energy devices. Herein, we demonstrate the modulation of the bifunctional oxygen electrocatalytic activity of nitrogen-doped carbon-encapsulated CoP (CoP@NC) nanostructures by surface tailoring with ultralow amount (0.56 atomic %) of Ru nanoparticles (2.5 nm). The CoP at the core and the Ru nanoparticles on the shell have a facile charge transfer interaction with the encapsulating NC. The strong coupling of Ru with CoP@NC boosts the electrocatalytic performance toward oxygen reduction (ORR), oxygen evolution (OER), and hydrogen evolution (HER) reactions. The surface-tailored catalyst requires only 35 mV to deliver the benchmark current density of 10 mA·cm-2 for HER. A small potential gap of 620 mV between ORR and OER is achieved, making the catalyst highly suitable for the development of rechargeable zinc-air batteries (ZABs). The homemade ZAB delivers a specific capacity of 780 mA·hgZn-1 and peak power density of 175 mW·cm-2 with a very small voltaic efficiency loss (1.1%) after 300 cycles. The two-electrode water splitting cell (CoP@NC-Ru||CoP@NC-Ru) delivers remarkably low cell voltage of 1.47 V at the benchmark current density. Stable current density of 25 mA·cm-2 for 25 h without any significant change is achieved. Theoretical studies support the charge transfer interaction-induced enhanced electrocatalytic activity of the surface-tailored nanostructure.
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Affiliation(s)
- Mopidevi Manikanta Kumar
- Functional Materials and Electrochemistry Lab Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - C Aparna
- Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, Karnataka 560064, India
| | - Amit Kumar Nayak
- Materials Science Centre, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - Umesh V Waghmare
- Theoretical Sciences Unit and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, Karnataka 560064, India
| | - Debabrata Pradhan
- Materials Science Centre, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
| | - C Retna Raj
- Functional Materials and Electrochemistry Lab Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
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Winkler D, Leitner M, Auer A, Kunze-Liebhäuser J. The Relevance of the Interfacial Water Reactivity for Electrochemical CO Reduction on Copper Single Crystals. ACS Catal 2024; 14:1098-1106. [PMID: 38269043 PMCID: PMC10806897 DOI: 10.1021/acscatal.3c02700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 12/13/2023] [Accepted: 12/13/2023] [Indexed: 01/26/2024]
Abstract
The electrochemical reduction of CO2 is an important electrolysis reaction that enables the conversion of a waste gas to fuels or value-added chemicals. To make this reaction viable, a profound understanding of central intermediate steps, such as the CO electroreduction, is required. On Cu, the CO reduction reaction (CORR) is intimately linked to the hydrogen evolution reaction (HER) that proceeds via the reduction of water in alkaline or neutral electrolytes. Here, we demonstrate that the interaction of water or more specifically the water reduction kinetics on differently smooth Cu(100) and Cu(111) surfaces during the CORR in alkaline media significantly governs the CORR. On Cu(111), faster HER kinetics and the highest CORR activity are observed, even though HER and CORR onsets are more negative. While on Cu(100) small Cu ad-island clusters form in the cathodic potential range only when CO is present, structural changes appear on a larger length scale on Cu(111) both under CORR conditions and when no CO is present. These differences in the reconstruction characteristics may be attributed to the dominance of either the CORR and its intermediates or the HER on the different Cu surfaces. Therefore, the interfacial water reactivity is considered an essential activity descriptor for the CORR on Cu in alkaline media.
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Affiliation(s)
- Daniel Winkler
- Department
of Physical Chemistry, University of Innsbruck, Innrain 52c, 6020 Innsbruck, Austria
| | - Matthias Leitner
- Department
of Physical Chemistry, University of Innsbruck, Innrain 52c, 6020 Innsbruck, Austria
| | - Andrea Auer
- Department
of Physical Chemistry, University of Innsbruck, Innrain 52c, 6020 Innsbruck, Austria
| | - Julia Kunze-Liebhäuser
- Department
of Physical Chemistry, University of Innsbruck, Innrain 52c, 6020 Innsbruck, Austria
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100
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Demnitz M, Lamas YM, Garcia Barros RL, de Leeuw den Bouter A, van der Schaaf J, Theodorus de Groot M. Effect of iron addition to the electrolyte on alkaline water electrolysis performance. iScience 2024; 27:108695. [PMID: 38205262 PMCID: PMC10777114 DOI: 10.1016/j.isci.2023.108695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/27/2023] [Accepted: 12/06/2023] [Indexed: 01/12/2024] Open
Abstract
Improvement of alkaline water electrolysis is a key enabler for quickly scaling up green hydrogen production. Fe is omnipresent within most industrial alkaline water electrolyzers and its effect on electrolyzer performance needs to be assessed. We conducted three-electrode and flow cell experiments with electrolyte Fe and Ni electrodes. Three-electrode cell experiments show that Fe ([Fe] = 6-357 μM; ICP-OES) promotes HER and OER by lowering both overpotentials by at least 100 mV at high current densities (T = 35°C-91°C). The overpotential of a zero-gap flow cell was decreased by 200 mV when increasing the Fe concentration ([Fe] = 13-549 μM, T = 21°C-75°C). HER benefits from the formation of Fe dendrite layers (SEM/EDX, XPS), which prevent NiHx formation and increase the overall active area. The OER benefits from the formation of mixed Ni/Fe oxyhydroxides leading to better catalytic activity and Tafel slope reduction.
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Affiliation(s)
- Maximilian Demnitz
- Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands
- Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands
| | - Yuran Martins Lamas
- Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands
- Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands
| | - Rodrigo Lira Garcia Barros
- Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands
- Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands
| | - Anouk de Leeuw den Bouter
- Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands
- Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands
| | - John van der Schaaf
- Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands
- Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands
| | - Matheus Theodorus de Groot
- Department of Chemical Engineering and Chemistry, Sustainable Process Engineering Group, Eindhoven University of Technology, P.O. Box 513, Eindhoven 5600 MB, the Netherlands
- Eindhoven Institute for Renewable Energy Systems, Eindhoven University of Technology, PO Box 513, Eindhoven 5600 MB, the Netherlands
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