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Chen Z, Ma T, Wei W, Wong WY, Zhao C, Ni BJ. Work Function-Guided Electrocatalyst Design. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401568. [PMID: 38682861 DOI: 10.1002/adma.202401568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/14/2024] [Indexed: 05/01/2024]
Abstract
The development of high-performance electrocatalysts for energy conversion reactions is crucial for advancing global energy sustainability. The design of catalysts based on their electronic properties (e.g., work function) has gained significant attention recently. Although numerous reviews on electrocatalysis have been provided, no such reports on work function-guided electrocatalyst design are available. Herein, a comprehensive summary of the latest advancements in work function-guided electrocatalyst design for diverse electrochemical energy applications is provided. This includes the development of work function-based catalytic activity descriptors, and the design of both monolithic and heterostructural catalysts. The measurement of work function is first discussed and the applications of work function-based catalytic activity descriptors for various reactions are fully analyzed. Subsequently, the work function-regulated material-electrolyte interfacial electron transfer (IET) is employed for monolithic catalyst design, and methods for regulating the work function and optimizing the catalytic performance of catalysts are discussed. In addition, key strategies for tuning the work function-governed material-material IET in heterostructural catalyst design are examined. Finally, perspectives on work function determination, work function-based activity descriptors, and catalyst design are put forward to guide future research. This work paves the way to the work function-guided rational design of efficient electrocatalysts for sustainable energy applications.
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Affiliation(s)
- Zhijie Chen
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Wei Wei
- Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, 2007, Australia
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom Kowloon, Hong Kong, P. R. China
| | - Chuan Zhao
- School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia
| | - Bing-Jie Ni
- School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia
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2
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Fang T, Yu X, Han X, Gao J, Ma Y. Coordination Engineering of Carbon Dots and Mn in Co-Based Phosphides for Highly Efficient Seawater Splitting at Ampere-Level Current Density. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402478. [PMID: 38778729 DOI: 10.1002/smll.202402478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Indexed: 05/25/2024]
Abstract
Direct electrolysis of seawater to generate hydrogen is an attractive approach for storing renewable energy. However, direct seawater splitting suffers from low current density and limited operating stability, which severely hinders its industrialization. Herein, a promising strategy is reported to obtain a nano needle-like array catalyst-CDs-Mn-CoxP on nickel foam, in which the Mn─O─C bond tightly binds Mn, Carbon dots (CDs), and CoxP together. The coordination engineering of CDs and Mn not only effectively regulates the electronic structure of CoxP, but also endows the as-prepared catalyst with selectivity and marked long-term stability at ampere-level current density. Low overpotentials of 208 and 447 mV are required to achieve 1000 mA cm-2 for hydrogen evolution reaction (HER) and Oxygen evolution reaction (OER) in simulated seawater, respectively. Cell potentials of 1.78 and 1.86 V are needed to reach 500 and 1000 mA cm-2 in alkaline seawater along with excellent durability for 350 h. DFT studies have verified that the introduction of Mn and CDs effectively shifts the d-band center of Co-3d toward higher energy, thereby strengthening the adsorption of intermediates and enhancing the catalytic activity. This study sheds light on the development of highly effective and stable catalysts for large-scale seawater electrolysis.
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Affiliation(s)
- Tingting Fang
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Xin Yu
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Xingzhuo Han
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Juan Gao
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Yurong Ma
- Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Ministry of Industry and Information Technology, MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
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3
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Kong X, Xu J, Ju Z, Chen C. Durable Ru Nanocrystal with HfO 2 Modification for Acidic Overall Water Splitting. NANO-MICRO LETTERS 2024; 16:185. [PMID: 38687410 PMCID: PMC11061093 DOI: 10.1007/s40820-024-01384-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 03/24/2024] [Indexed: 05/02/2024]
Abstract
Durable and efficient bi-functional catalyst, that is capable of both oxygen evolution reaction and hydrogen evolution reaction under acidic condition, are highly desired for the commercialization of proton exchange membrane water electrolysis. Herein, we report a robust L-Ru/HfO2 heterostructure constructed via confining crystalline Ru nanodomains by HfO2 matrix. When assembled with a proton exchange membrane, the bi-functional L-Ru/HfO2 catalyst-based electrolyzer presents a voltage of 1.57 and 1.67 V to reach 100 and 300 mA cm-2 current density, prevailing most of previously reported Ru-based materials as well as commercial Pt/C||RuO2 electrolyzer. It is revealed that the synergistic effect of HfO2 modification and small crystalline domain formation significantly alleviates the over-oxidation of Ru. More importantly, this synergistic effect facilitates a dual-site oxide path during the oxygen evolution procedure via optimization of the binding configurations of oxygenated adsorbates. As a result, the Ru active sites maintain the metallic state along with reduced energy barrier for the rate-determining step (*O→*OOH). Both of water adsorption and dissociation (Volmer step) are strengthened, while a moderate hydrogen binding is achieved to accelerate the hydrogen desorption procedure (Tafel step). Consequently, the activity and stability of acidic overall water splitting are simultaneously enhanced.
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Affiliation(s)
- Xiangkai Kong
- School of Materials and Physics, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, People's Republic of China.
- Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei, 235000, Anhui, People's Republic of China.
| | - Jie Xu
- Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, Huaibei Normal University, Huaibei, 235000, Anhui, People's Republic of China
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, Jiangsu, People's Republic of China
| | - Zhicheng Ju
- School of Materials and Physics, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, People's Republic of China.
| | - Changle Chen
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, Anhui, People's Republic of China.
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Goswami A, Ghosh D, Garai A, Pradhan D, Biradha K. Bimetallic Organic Frameworks via In Situ Solvothermal Sol-Gel-Crystal and Sol-Crystal Transformation as Durable Electrocatalysts for Oxygen Reduction Reaction. Inorg Chem 2024; 63:7303-7313. [PMID: 38597285 DOI: 10.1021/acs.inorgchem.4c00190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The in situ solvothermal conversion of metal-organic gels (MOGs) to crystalline metal-organic frameworks (MOFs) represents a versatile and ingenious strategy that has been employed for the synthesis of MOF materials with specific morphologies, high yield, and improved functional properties. Herein, we have adopted an in situ solvothermal conversion of bimetallic MOGs to crystalline bimetallic MOFs with the aim of introducing a redox-active metal heterogeneity into the monometallic counterpart. The formation of bimetallic NiZn-MOF and CoZn-MOF via in situ solvothermal sol-gel-crystal and sol-crystal transformation is found to depend on the solvent systems used. The sol-to-gel-to-crystal transformation of NiZn-MOF via the formation of NiZn-MOG is found to occur through the gradual disruption of gel fibers leading to subsequent formation of microcrystals and single crystals of NiZn-MOF. These bimetallic MOFs and MOGs serve as promising electrocatalysts for oxygen reduction reaction (ORR) with an excellent methanol tolerance property, which can be attributed to the enhanced mass and charge transfer, higher oxygen vacancies, and bimetallic synergistic interactions among the heterometals. This work demonstrates a convenient strategy for producing bimetallic MOGs to MOFs through the introduction of a redox-active metal heterogeneity in the inorganic hybrid functional materials for fundamental and applied research. Our results connect MOGs and MOFs which have been regarded as having opposite physical states, that is, soft vs hard, and provide promising structural correlation between MOGs and MOFs at the molecular level.
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Affiliation(s)
- Anindita Goswami
- Department of Chemistry, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Debanjali Ghosh
- Materials Science Centre, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Abhijit Garai
- Department of Chemistry, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Debabrata Pradhan
- Materials Science Centre, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
| | - Kumar Biradha
- Department of Chemistry, Indian Institute of Technology Kharagpur, 721302 Kharagpur, India
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5
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Ozgur C, Erdil T, Geyikci U, Okuyucu C, Lokcu E, Kalay YE, Toparli C. Engineering Oxygen Vacancies in (FeCrCoMnZn) 3O 4-δ High Entropy Spinel Oxides Through Altering Fabrication Atmosphere for High-Performance Rechargeable Zinc-Air Batteries. GLOBAL CHALLENGES (HOBOKEN, NJ) 2024; 8:2300199. [PMID: 38223889 PMCID: PMC10784197 DOI: 10.1002/gch2.202300199] [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: 08/04/2023] [Revised: 11/03/2023] [Indexed: 01/16/2024]
Abstract
High entropy oxides (HEOs) offer great potential as catalysts for oxygen electrocatalytic reactions in alkaline environments. Herein, a novel synthesis approach to prepare (FeCrCoMnZn)3O4-δ high entropy spinel oxide in a vacuum atmosphere, with the primary objective of introducing oxygen vacancies into the crystal structure, is presented. As compared to the air-synthesized counterpart, the (FeCrCoMnZn)3O4-δ with abundant oxygen vacancies demonstrates a low (better) bifunctional (BI) index of 0.89 V in alkaline media, indicating enhanced electrocatalytic oxygen catalytic activity. Importantly, (FeCrCoMnZn)3O4-δ demonstrates outstanding long-term electrochemical and structural stability. When utilized as electrocatalysts in the air cathode of Zn-air batteries, the vacuum atmosphere synthesized (FeCrCoMnZn)3O4-δ catalysts outperform the samples treated in an air atmosphere, displaying superior peak power density, specific capacity, and cycling stability. These findings provide compelling evidence that manipulating the synthesis atmosphere of multi-component oxides can serve as a novel approach to tailor their electrochemical performance.
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Affiliation(s)
- Cagla Ozgur
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Tuncay Erdil
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Uygar Geyikci
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Can Okuyucu
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Ersu Lokcu
- Department of Metallurgical and Materials EngineeringEskisehir Osmangazi UniversityEskisehir26040Turkey
| | - Yunus Eren Kalay
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
| | - Cigdem Toparli
- Department of Metallurgical and Materials EngineeringMiddle East Technical UniversityAnkara06800Turkey
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6
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Hsu BZ, Lai JK, Lee YH. La-based perovskites for capacity enhancement of Li-O 2 batteries. Front Chem 2023; 11:1264593. [PMID: 37720718 PMCID: PMC10502298 DOI: 10.3389/fchem.2023.1264593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 08/23/2023] [Indexed: 09/19/2023] Open
Abstract
Li-O2 batteries are a promising technology for the upcoming energy storage requirements because of their high theoretical specific energy density of 11,680 Wh kg-1. Currently, the actual capacity of Li-O2 batteries is much lower than this theoretical value. In many studies, perovskites have been applied as catalysts to improve the air electrode reactions in Li-O2 batteries. The effects of structure and doping on the catalytic activity of perovskites are still unclear. La1-xSrxCoO3-δ (x = 0.1, 0.3, and 0.5) and La0.9Sr0.1YbO3-δ mixed with carbon black (Vulcan XC500 or Super P) were used as air electrode catalysts. Electrochemical characterizations were conducted using a Swagelok-type cell. The charge-discharge capacity and cyclic voltammetry (CV) performance were investigated in this study. The La1-xSrxCoO3-δ (x = 0.1, 0.3, and 0.5) is a suitable cathode catalyst for Li-O2 batteries. In this study, the La0.5Sr0.5CoO3-δ/Super P cathode demonstrated the highest discharge capacity (6,032 mAh g-1). This excellent performance was attributed to the large reaction area and enhanced Li2CO3 generation.
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Affiliation(s)
| | | | - Yi-Hsuan Lee
- Department of Mechanical Engineering, National Taipei University of Technology, Taipei, Taiwan
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7
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Zhou Y, Guan P, Chen F, Feng Z, Jia H, Liang T, Li M, Wan T, Tian R, Han Z, Chu D. Engineering work functions of cobalt-doped manganese oxide based electrocatalysts for highly efficient oxygen evolution reaction. J Colloid Interface Sci 2023; 642:23-28. [PMID: 37001454 DOI: 10.1016/j.jcis.2023.03.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023]
Abstract
The crystalline and electronic structures are two important factors for the design of electrocatalysts. In this work, Co-doped MnO electrocatalysts grown on nickel foam (NF) were prepared by a facile hydrothermal reaction, followed by H2 treatment process. The electrocatalytic performance of MnO was significantly improved after doping with Co and the Co0.1Mn0.9O-NF sample achieved excellent oxygen evolution reaction (OER) performance with low overpotential (370 mV at 10 mA cm-2) and reasonable Tafel slope (85.6 mV dec-1). Significantly, the low work function was obtained in the Co0.1Mn0.9O-NF sample (4.37 eV), which could accelerate the charge transfer process of the OER activity. The excellent OER performance of the Co0.1Mn0.9O-NF sample is also attributed to the rich active sites, which improved electrical conductivity and enlarged electrochemical surface areas.
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8
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Zhang D, Li M, Yong X, Song H, Waterhouse GIN, Yi Y, Xue B, Zhang D, Liu B, Lu S. Construction of Zn-doped RuO 2 nanowires for efficient and stable water oxidation in acidic media. Nat Commun 2023; 14:2517. [PMID: 37130878 PMCID: PMC10154325 DOI: 10.1038/s41467-023-38213-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 04/21/2023] [Indexed: 05/04/2023] Open
Abstract
Oxygen evolution reaction catalysts capable of working efficiently in acidic media are highly demanded for the commercialization of proton exchange membrane water electrolysis. Herein, we report a Zn-doped RuO2 nanowire array electrocatalyst with outstanding catalytic performance for the oxygen evolution reaction under acidic conditions. Overpotentials as low as 173, 304, and 373 mV are achieved at 10, 500, and 1000 mA cm-2, respectively, with robust stability reaching to 1000 h at 10 mA cm-2. Experimental and theoretical investigations establish a clear synergistic effect of Zn dopants and oxygen vacancies on regulating the binding configurations of oxygenated adsorbates on the active centers, which then enables an alternative Ru-Zn dual-site oxide path of the reaction. Due to the change of reaction pathways, the energy barrier of rate-determining step is reduced, and the over-oxidation of Ru active sites is alleviated. As a result, the catalytic activity and stability are significantly enhanced.
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Affiliation(s)
- Dafeng Zhang
- State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, P. R. China
| | - Mengnan Li
- State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, P. R. China
| | - Xue Yong
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
- Department of Chemistry, The University of Sheffield, Sheffield, S3 7HF, UK
| | - Haoqiang Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China
| | | | - Yunfei Yi
- State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, P. R. China
| | - Bingjie Xue
- State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, P. R. China
| | - Dongliang Zhang
- State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, P. R. China
| | - Baozhong Liu
- State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, P. R. China.
| | - Siyu Lu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, 450000, P. R. China.
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9
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Xu H, Li J, Chu X. Interfacial built-in electric-field for boosting energy conversion electrocatalysis. NANOSCALE HORIZONS 2023; 8:441-452. [PMID: 36762488 DOI: 10.1039/d2nh00549b] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The formation of a built-in electric field (BIEF) can induce electron-rich and electron-poor counterparts to synergistically modify electronic configurations and optimize the binding strengths with intermediates, thereby leading to outstanding electrocatalytic performance. Herein, a critical review regarding the concept, modulation strategies, and applications of BIEFs is comprehensively summarized, which begins with the fundamental concepts, together with the advantages of BIEF for boosting electrocatalytic reactions. Then, a systematic summary of the advanced strategies for the modulation of BIEF along with the in-detail mechanisms in its formation are also added. Finally, the applications of BIEF in driving electrocatalytic reactions and some cascade systems for illustrating the conclusive role from the induced BIEF are also systematically discussed, followed by perspectives on the future deployment and opportunity of the BIEF design.
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Affiliation(s)
- Hui Xu
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China.
| | - Junru Li
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan Province, P. R. China.
| | - Xianxu Chu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan Province, P. R. China.
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10
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Xu H, Li J, Chu X. Intensifying Hydrogen Spillover for Boosting Electrocatalytic Hydrogen Evolution Reaction. CHEM REC 2023; 23:e202200244. [PMID: 36482015 DOI: 10.1002/tcr.202200244] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/22/2022] [Indexed: 12/13/2022]
Abstract
Hydrogen spillover has attracted increasing interests in the field of electrocatalytic hydrogen evolution reaction (HER) in recent years because of their distinct reaction mechanism and beneficial terms for simultaneously weakening the strong hydrogen adsorption on metal and strengthening the weak hydrogen adsorption on support. By taking advantageous merits of efficient hydrogen transfer, hydrogen spillover-based binary catalysts have been widely investigated, which paves a new way for boosting the development of hydrogen production by water electrolysis. In this paper, we summarize the recent progress of this interesting field by focusing on the advanced strategies for intensifying the hydrogen spillover towards HER. In addition, the challenging issues and some perspective insights in the future development of hydrogen spillover-based electrocatalysts are also systematically discussed.
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Affiliation(s)
- Hui Xu
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province, 213164, China.,College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Junru Li
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, Henan Province, PR China
| | - Xianxu Chu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, Henan Province, PR China.,College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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11
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Kang J, Tang D, Liu Y, Huang Y, He W, Liu Y, Ji X, Li W, Li J. Hydrogen-Treated Spent Lithium Cobalt Oxide as an Efficient Electrocatalyst for Oxygen Evolution. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- Jihu Kang
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Dan Tang
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Yong Liu
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Yaling Huang
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Wenhao He
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Yang Liu
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Xiaobo Ji
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Wenzhang Li
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
- Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, 932 Lushan Road, Changsha 410083, China
| | - Jie Li
- School of Chemistry and Chemical Engineering, Central South University, 932 Lushan Road, Changsha 410083, China
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12
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Zhang Y, Zhang M, Zang Y, Wang H, Liu C, Wei L, Wang Y, He L, Wang W, Zhang Z, Han R, Ji N, Song C, Lu X, Ma D, Sun Y, Liu Q. Elimination of NH 3 by Interfacial Charge Transfer over the Ag/CeSnO x Tandem Catalyst. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Yan Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Min Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Yuchao Zang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Huijun Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Caixia Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Liehao Wei
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Yuhe Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Lijun He
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Weichao Wang
- College of Environmental Science and Engineering, Tianjin Key Laboratory of Environmental Remediation & Pollution Control, MOE Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, People’s Republic of China
| | - Ziyin Zhang
- Langfang City Beichen Entrepreneurship Resin Materials Incorporated Company, Langfang 065000, China
- Hebei Province New Resin Material Technology Innovation Center, Langfang 065000, People’s Republic of China
- New Catalytic Materials Engineering Research Center for Air Pollutant Control, Langfang 065000, People’s Republic of China
| | - Rui Han
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Na Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Chunfeng Song
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Xuebin Lu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Degang Ma
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
| | - Yanrong Sun
- College of Materials Engineering, North China Institute of Aerospace Engineering, Langfang 065000, People’s Republic of China
| | - Qingling Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
- State Key Laboratory of Engines, School of Mechanical Engineering, Tianjin University, Tianjin 300350, People’s Republic of China
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13
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Li L, Tao D, Zhao Q, Fu S, Chen C, Tian M, Shi J, Ma M, He C. Strengthening chlorobenzene catalytic degradation rate and selectivity over LaxSr1-xMnO3±δ by anchoring interfacial oxygen vacancy. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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14
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Bhowmick S, Sarangi A, Moi CT, Chakraborty S, Qureshi M. Diffusion-Mediated Morphological Transformation in Bifunctional Mn 2O 3/CuO-(VO) 3(PO 4) 2·6H 2O for Enhanced Electrochemical Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52204-52215. [PMID: 36350758 DOI: 10.1021/acsami.2c16873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A strategical approach for morphological transformation and heterojunction formation was utilized to suppress the shortcomings of uni-metal oxide electrocatalysts and enhance their bifunctionality. In situ generation of copper oxide (CuO) over the surface of manganese oxide (Mn2O3) resulted in a morphological transformation from solid spheres to hollow spherical structures due to the ion-exchange diffusion (Kirkendall effect) of Cu ions into Mn2O3 particles. This hollowness resulted in the advancement of the bifunctional electrocatalytic behavior of Mn2O3/CuO (overpotential (η10) of 280 mV for an OER and 310 mV for an HER at a current density of 10 mA/cm2) by virtue of increased exposed surface active sites aiding the adsorption of water molecules on the surface. The increased electrochemical active surface area (ECSA/Cdl = 34 mF/cm2) and reduced charge transfer resistance resulted in the formation of Mn2O3/CuO hollow spheres to achieve an approximately threefold enhancement in the turnover frequency (TOF) compared to the bare Mn2O3. The electrocatalytic efficiency of Mn2O3/CuO was further enhanced by virtue of the faster charge transfer coefficient of two-dimensional (2D) vanadyl phosphate hexahydrate (VOP) sheets deposited over its surface. This boosted the overall water splitting with attained overpotential (η10) values of 190 and 220 mV with Tafel slopes of 60 and 105 mV/decade for an OER and HER, respectively. The morphological transformation and formation of an n-p heterojunction between Mn2O3 and CuO based on their work function (φ) values evaluated from the density functional theory (DFT) calculation and the effect of the VOP overlayer for faster reaction kinetics at the electrolyte interface resulted in an ∼10-fold increment in TOF values compared to the bare counterpart.
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Affiliation(s)
- Sourav Bhowmick
- Materials Science Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam781039, India
| | - Arijeet Sarangi
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, HBNI, Chhatnag Road, Jhunsi, Prayagraj (Allahabad)211019, India
| | - Ching Thian Moi
- Materials Science Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam781039, India
| | - Sudip Chakraborty
- Materials Theory for Energy Scavenging (MATES) Lab, Harish-Chandra Research Institute (HRI) Allahabad, HBNI, Chhatnag Road, Jhunsi, Prayagraj (Allahabad)211019, India
| | - Mohammad Qureshi
- Materials Science Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam781039, India
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15
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Abstract
Fuel cells (FCs), water electrolyzers (WEs), unitized regenerative fuel cells (URFCs), and metal-air batteries (MABs) are among the emerging electrochemical technologies for energy storage, fuel (H2), oxidant (O2), and clean energy production. Their commercial applications are hindered by the low oxygen reduction reaction/oxygen evolution reaction (ORR/OER) bifunctional activity (for URFCs and MABs), OER selectivity (brine electrolysis in seawater and Martian environments), and high cost of the benchmark electrocatalysts (OER: RuO2, IrO2 and ORR: Pt/C) which affects the performance and affordability of the devices. Low-cost electrocatalysts with highly symmetric ORR/OER bifunctional activity and high OER selectivity are crucial for large-scale FC, WE, URFC, and MAB application. Recent studies have revealed that tuning the structure of pyrochlore oxides provides a pathway to enhancing OER and ORR activity over a wide range of pH. Pyrochlore oxides commonly contain a cubic A2B2O7-x structure with two types of tetrahedrally coordinated O atoms containing (1) A-O-A and (2) A-O-B types with a cationic radii mismatch of rA/rB > 1.5 and propensity toward oxygen vacancy formation. The variety of pyrochlore oxides and their tunable properties make them attractive for a wide spectrum of applications. Among all the metal oxides, Ru-based pyrochlores (e.g., Pb2Ru2O7-x) exhibit the best bifunctional oxygen electrocatalytic activity, i.e., low bifunctionality index (BI), in alkaline medium. Furthermore, pyrochlores exhibit high OER selectivity in brine electrolytes due to the presence of surface oxygen vacancies, making them suitable for space applications (brine electrolysis on Mars) and coastal hydrogen generation. Their bifunctional activity and selectivity can be further amplified by (1) substituting "A" and "B" sites of pyrochlores (AA'BB'O7-x), (2) tuning metal oxidation states of A and B by varying synthesis conditions, and (3) modulating oxygen vacancy concentration, each of which yield favorable structural and electronic variations. In recent years, research on the synthesis and understanding of pyrochlores has significantly enhanced their viability, offering a new horizon in the quest for economical and active electrocatalysts. However, an account that focuses on critical developments in this field is still lacking.In this Account, we focus on the recent development of a variety of pyrochlore electrocatalysts to understand intrinsic structure-activity-selectivity-stability relationships in these materials. Recent developments and applications of pyrochlore-based electrocatalysts are discussed under the following headings: (1) modulation of crystal and electronic structure of pyrochlores, (2) structure-activity-stability relationships of different pyrochlores for OER and ORR, (3) development of OER-selective pyrochlores for brine electrolysis, and (4) the application of pyrochlores in electrochemical devices. Finally, we highlight some unaddressed issues such as the precise identification of active sites, which can be addressed in the future through advanced in situ and ex situ characterization techniques coupled with the density functional theory-based analyses. This Account provides foundational understanding to guide the comprehensive development of highly active, selective, stable and low-cost structurally engineered pyrochlores for high performance electrochemical devices.
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Affiliation(s)
- Pralay Gayen
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Sulay Saha
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Vijay Ramani
- Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, 1 Brookings Drive, St. Louis, Missouri 63130, United States
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16
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Zhang C, Wang F, Xiong B, Yang H. Regulating the electronic structures of mixed B-site pyrochlore to enhance the turnover frequency in water oxidation. NANO CONVERGENCE 2022; 9:22. [PMID: 35583677 PMCID: PMC9117583 DOI: 10.1186/s40580-022-00311-z] [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: 02/23/2022] [Accepted: 04/13/2022] [Indexed: 06/15/2023]
Abstract
This paper describes the development of mixed B-site pyrochlore Y2MnRuO7 electrocatalyst for oxygen evolution reaction (OER) in acidic media, a challenge for the development of low-temperature electrolyzer for green hydrogen production. Recently, several theories have been developed to understand the reaction mechanism for OER, though there is an uncertainty in most of the cases, due to the complex surface structures. Several key factors such as lattice oxygen, defect, electronic structure, oxidation state, hydroxyl group and conductivity were identified and shown to be important to the OER activity. The contribution of each factor to the performance however is often not well understood, limiting their impact in guiding the design of OER electrocatalysts. In this work, we showed mixed B-site pyrochlore Y2MnRuO7 catalyst exhibits 14 times higher turnover frequency (TOF) than RuO2 while maintaining a low overpotential of ~ 300 mV for the entire testing period of 24 h in acidic electrolyte. X-ray photoelectron spectroscopy (XPS) analysis reveals that this B-site mixed pyrochlore Y2MnRuO7 has a higher oxidation state of Ru than those of Y2Ru2O7, which could be crucial for improving OER performance as the broadened and lowered Ru 4d band resulted from the B-site substitution by Mn is beneficial to the OER kinetics.
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Affiliation(s)
- Cheng Zhang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, 61801, Urbana, IL, USA
| | - Fangfang Wang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, 61801, Urbana, IL, USA
- School of Mechanical and Power Engineering, Zhengzhou University, 100 Science Avenue, 450001, Zhengzhou, Henan, People's Republic of China
| | - Beichen Xiong
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, 61801, Urbana, IL, USA
| | - Hong Yang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 S. Mathews Avenue, 61801, Urbana, IL, USA.
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17
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Yin R, Chen J, Mi J, Liu H, Yan T, Shan L, Lang J, Li J. Breaking the Activity–Selectivity Trade-Off for Simultaneous Catalytic Elimination of Nitric Oxide and Chlorobenzene via FeVO 4–Fe 2O 3 Interfacial Charge Transfer. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00161] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rongqiang Yin
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jianjun Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jinxing Mi
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Haiyan Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Tao Yan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Liang Shan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Junyu Lang
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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18
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He J, Zheng T, Wu D, Zhang S, Gu M, He Q. Insights into the Determining Effect of Carbon Support Properties on Anchoring Active Sites in Fe–N–C Catalysts toward the Oxygen Reduction Reaction. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04815] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jing He
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Tianlong Zheng
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Duojie Wu
- Department of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shuomeng Zhang
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Meng Gu
- Department of Materials Science and Engineering, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qinggang He
- College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang 315100, China
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19
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High-performance AEM unitized regenerative fuel cell using Pt-pyrochlore as bifunctional oxygen electrocatalyst. Proc Natl Acad Sci U S A 2021; 118:2107205118. [PMID: 34593643 DOI: 10.1073/pnas.2107205118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2021] [Indexed: 11/18/2022] Open
Abstract
The performance of fixed-gas unitized regenerative fuel cells (FG-URFCs) are limited by the bifunctional activity of the oxygen electrocatalyst. It is essential to have a good bifunctional oxygen electrocatalyst which can exhibit high activity for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). In this regard, Pt-Pb2Ru2O7-x is synthesized by depositing Pt on Pb2Ru2O7-x wherein Pt individually exhibits high ORR while Pb2Ru2O7-x shows high OER and moderate ORR activity. Pt-Pb2Ru2O7-x exhibits higher OER (η@10mAcm-2 = 0.25 ± 0.01 V) and ORR (η@-3mAcm-2 = -0.31 ± 0.02 V) activity in comparison to benchmark OER (IrO2, η@10mAcm-2 = 0.35 ± 0.02 V) and ORR (Pt/C, η@-3mAcm-2 = -0.33 ± 0.02 V) electrocatalysts, respectively. Pt-Pb2Ru2O7-x shows a lower bifunctionality index (η@10mAcm-2, OER - η@-3mAcm-2, ORR) of 0.56 V with more symmetric OER-ORR activity profile than both Pt (>1.0 V) and Pb2Ru2O7-x (0.69 V) making it more useful for the AEM (anion exchange membrane) URFC or metal-air battery applications. FG-URFC tested with Pt-Pb2Ru2O7-x and Pt/C as bifunctional oxygen electrocatalyst and bifunctional hydrogen electrocatalyst, respectively, yields a mass-specific current density of 715 ± 11 A/gcat -1 at 1.8 V and 56 ± 2 A/gcat -1 at 0.9 V under electrolyzer mode and fuel-cell mode, respectively. The FG-URFC shows a round-trip efficiency of 75% at 0.1 A/cm-2, underlying improvement in AEM FG-URFC electrocatalyst design.
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20
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Yao X, Chen ZW, Liu GJ, Lang XY, Zhu YF, Gao W, Jiang Q. Steric Hindrance- and Work Function-Promoted High Performance for Electrochemical CO Methanation on Antisite Defects of MoS 2 and WS 2. CHEMSUSCHEM 2021; 14:2255-2261. [PMID: 33851508 DOI: 10.1002/cssc.202100457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/06/2021] [Indexed: 06/12/2023]
Abstract
CO methanation from electrochemical CO reduction reaction (CORR) is significant for sustainable environment and energy, but electrocatalysts with excellent selectivity and activity are still lacking. Selectivity is sensitive to the structure of active sites, and activity can be tailored by work function. Moreover, intrinsic active sites usually possess relatively high concentration compared to artificial ones. Here, antisite defects MoS2 and WS2 , intrinsic atomic defects of MoS2 and WS2 with a transition metal atom substituting a S2 column, were investigated for CORR by density functional theory calculations. The steric hindrance from the special bowl structure of MoS2 and WS2 ensured good selectivity towards CO methanation. Coordination environment variation of the active sites, the under-coordinated Mo or W atoms, effectively lowered the work function, making MoS2 and WS2 highly active for CO methanation with the required potential of -0.47 and -0.49 V vs. reversible hydrogen electrode, respectively. Moreover, high concentration of active sites and minimal structural deformation during the catalytic process of MoS2 and WS2 enhanced their attraction for future commercial application.
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Affiliation(s)
- Xue Yao
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, P. R. China
- School of Materials Science and Engineering, Jilin University, Changchun, 130022, P. R. China
| | - Zhi-Wen Chen
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON M5S 3E4, Canada
| | - Guo-Jun Liu
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, P. R. China
- School of Materials Science and Engineering, Jilin University, Changchun, 130022, P. R. China
| | - Xing-You Lang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, P. R. China
- School of Materials Science and Engineering, Jilin University, Changchun, 130022, P. R. China
| | - Yong-Fu Zhu
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, P. R. China
- School of Materials Science and Engineering, Jilin University, Changchun, 130022, P. R. China
| | - Wang Gao
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, P. R. China
- School of Materials Science and Engineering, Jilin University, Changchun, 130022, P. R. China
| | - Qing Jiang
- Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, P. R. China
- School of Materials Science and Engineering, Jilin University, Changchun, 130022, P. R. China
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21
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Ni S, Qu H, Xing H, Xu Z, Zhu X, Yuan M, Wang L, Yu J, Li Y, Yang L, Liu H. Donor-Acceptor Couples of Metal and Metal Oxides with Enriched Ni 3+ Active Sites for Oxygen Evolution. ACS APPLIED MATERIALS & INTERFACES 2021; 13:17501-17510. [PMID: 33822584 DOI: 10.1021/acsami.1c00890] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Exploiting precious-metal-free and high-activity oxygen evolution reaction (OER) electrocatalysts has been in great demands toward many energy storage and conversion processes, for example, carbon dioxide reduction, metal-air batteries, and water splitting. In this study, the simple solid-state method is employed for coupling Ni (electron donors) with lower-Fermi-level MoO2 or WOx (electron acceptors) into donor-acceptor ensembles with well-designed interfaces as robust electrocatalysts for OER. The resulting Ni/MoO2 and Ni/WOx electrocatalysts exhibit smaller overpotentials of 287 and 333 mV at 10 mA cm-2 as well as smaller Tafel slopes of 51 and 65 mV/dec, respectively, with respect to the single Ni, MoO2, WOx, and even the benchmark RuO2 in 1 M KOH. Specially, on account of a higher Fermi level of Ni in comparison with MoO2 and WOx, their strong electronic interaction results in directional interfacial electron transfer and increases the hole density over Ni, dramatically enriching the population of high-valence Ni3+ active sites and decreasing the Fermi level of Ni. The existence of Ni3+ can strengthen the chemisorption of OH-, and the downshift of the Ni Fermi level can significantly expedite migration of electrons toward the surface of catalysts during OER, thus synergistically boosting the OER catalytic performance. Furthermore, the inner Ni/MoO2 and Ni/WOx heterostructures and the electrochemically induced surface layers of oxides/hydroxides collectively boost the OER kinetics. This study highlights the importance of designing highly efficient OER electrocatalysts with high-valence active species (Ni3+) and better matched energy levels induced by the work function difference through interfacial engineering.
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Affiliation(s)
- Shan Ni
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongnan Qu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Huifang Xing
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zihao Xu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangyang Zhu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Menglei Yuan
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Wang
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Jiemiao Yu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yanqing Li
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Liangrong Yang
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huizhou Liu
- CAS Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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22
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Saha S, Kishor K, Pala RGS. Climbing with support: scaling the volcano relationship through support–electrocatalyst interactions in electrodeposited RuO 2 for the oxygen evolution reaction. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00375e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The interfacial charge transfer and support-induced electrocatalyst faceting in thin catalysts enable ‘climbing up’ the volcano map for OER electrocatalysts. The conductivity of the support determines the OER activity of thick catalysts.
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Affiliation(s)
- Sulay Saha
- Department of Chemical Engineering
- Indian Institute of Technology
- Kanpur
- India
| | - Koshal Kishor
- Department of Chemical Engineering
- Indian Institute of Technology
- Kanpur
- India
- S. N. Patel Institute of Technology & Research Centre
| | - Raj Ganesh S. Pala
- Department of Chemical Engineering
- Indian Institute of Technology
- Kanpur
- India
- Materials Science Programme
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23
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Abstract
NASA's current mandate is to land humans on Mars by 2033. Here, we demonstrate an approach to produce ultrapure H2 and O2 from liquid-phase Martian regolithic brine at ∼-36 °C. Utilizing a Pb2Ru2O7-δ pyrochlore O2-evolution electrocatalyst and a Pt/C H2-evolution electrocatalyst, we demonstrate a brine electrolyzer with >25× the O2 production rate of the Mars Oxygen In Situ Resource Utilization Experiment (MOXIE) from NASA's Mars 2020 mission for the same input power under Martian terrestrial conditions. Given the Phoenix lander's observation of an active water cycle on Mars and the extensive presence of perchlorate salts that depress water's freezing point to ∼-60 °C, our approach provides a unique pathway to life-support and fuel production for future human missions to Mars.
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