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Dong Y, Deng Z, Zhang H, Liu G, Wang X. A Highly Active and Durable Hierarchical Electrocatalyst for Large-Current-Density Water Splitting. NANO LETTERS 2023; 23:9087-9095. [PMID: 37747850 DOI: 10.1021/acs.nanolett.3c02940] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Designing bifunctional catalysts with high current densities under industrial circumstances is crucial to propelling hydrogen energy with a boost from fundamental to practical application. In this work, heterojunction nanowire arrays consisting of manganese oxide and cobalt phosphide (denoted as MnO-CoP/NF) are designed to meet the industrial demand by regulating the synergic mass transport and electronic structure coupling with numerous nano-heterogeneous interfaces. The optimal MnO-CoP/NF electrode exhibits remarkable bifunctional electrocatalytic performance with overpotentials of 259.5 mV for hydrogen evolution at a large current density of 1000 mA cm-2 and 392.2 mV for oxygen evolution at 1500 mA cm-2. Moreover, the MnO-CoP/NF electrode demonstrates superior durability and an ultralow voltage of 1.76 V at 500 mA cm-2, outperforming that of a commercial RuO2||Pt/C electrode. This work sheds light on the design of metallic heterostructures with optimized interfacial electronic structures and a high abundance of active sites for practical industrial water splitting applications.
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Affiliation(s)
- Yan Dong
- College of Chemistry and Chemical Engineering, Central South University, 932 South Lushan Road, Changsha, Hunan 410083, People's Republic of China
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada
| | - Zhiping Deng
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada
| | - Hao Zhang
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada
| | - Guangyi Liu
- College of Chemistry and Chemical Engineering, Central South University, 932 South Lushan Road, Changsha, Hunan 410083, People's Republic of China
| | - Xiaolei Wang
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW, Edmonton, Alberta T6G 1H9, Canada
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2
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Dong Y, Deng Z, Xu Z, Liu G, Wang X. Synergistic Tuning of CoO/CoP Heterojunction Nanowire Arrays as Efficient Bifunctional Catalysts for Alkaline Overall Water Splitting. SMALL METHODS 2023:e2300071. [PMID: 37035955 DOI: 10.1002/smtd.202300071] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/08/2023] [Indexed: 06/19/2023]
Abstract
Bifunctional electrocatalysts with superior activity and durability are of great importance for electrocatalytic water splitting. Herein, hierarchical structured CoO/CoP heterojunctions are successfully designed as highly efficient and freestanding bifunctional electrocatalysts toward overall water splitting. The unique microstructure combining two-dimensional nanosheets with one-dimensional nanowires enables numerous exposed active sites, shortened ion-diffusion pathways, and enhanced conductivity, significantly improving performance. Such freestanding electrodes achieve high current density over 400 mA cm-2 at low overpotentials and have exceptional electrocatalytic activity as well as long-term durability for both hydrogen and oxygen evolution reactions under alkaline conditions. Remarkably, a high current density of 20 mA cm-2 is generated at a low cell voltage of 1.56 V in an alkaline water electrolyzer, originating from synergistic interactions between CoO and CoP exposing active sites and facilitating charge transfer and enhancing kinetics. This work provides new insight into designing low-cost but high-performance bifunctional electrocatalysts for practical water splitting.
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Affiliation(s)
- Yan Dong
- College of Chemistry and Chemical Engineering, Central South University, 932 South Lushan Road, Changsha, Hunan, 410083, P.R. China
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta, T6G 1H9, Canada
| | - Zhiping Deng
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta, T6G 1H9, Canada
| | - Zhixiao Xu
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta, T6G 1H9, Canada
| | - Guangyi Liu
- College of Chemistry and Chemical Engineering, Central South University, 932 South Lushan Road, Changsha, Hunan, 410083, P.R. China
| | - Xiaolei Wang
- Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta, T6G 1H9, Canada
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3
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Nayem SA, Islam S, Aziz MA, Ahammad AS. Mechanistic insight into hydrothermally prepared molybdenum-based electrocatalyst for overall water splitting. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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4
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Zhou P, Li R, Lv J, Huang X, Lu Y, Wang G. Synthesis of CoP nanoarrays by morphological engineering for efficient electrochemical hydrogen production. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Shultz LR, Preradovic K, Ghimire S, Hadley HM, Xie S, Kashyap V, Beazley MJ, Crawford KE, Liu F, Mukhopadhyay K, Jurca T. Nickel foam supported porous copper oxide catalysts with noble metal-like activity for aqueous phase reactions. Catal Sci Technol 2022; 12:3804-3816. [PMID: 35965882 PMCID: PMC9373473 DOI: 10.1039/d1cy02313f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Contiguous metal foams offer a multitude of advantages over conventional powders as supports for nanostructured heterogeneous catalysts; most critically a preformed 3-D porous framework ensuring full directional coverage of supported catalyst, and intrinsic ease of handling and recyclability. Nonetheless, metal foams remain comparatively underused in thermal catalysis compared to more conventional supports such as amorphous carbon, metal oxides, zeolites and more recently MOFs. Herein, we demonstrate a facile preparation of highly-reactive, robust, and easy to handle Ni foam-supported Cu-based metal catalysts. The highly sustainable synthesis requires no specialized equipment, no surfactants or additive redox reagents, uses water as solvent, and CuCl2(H2O)2 as precursor. The resulting material seeds as well-separated micro-crystalline Cu2(OH)3Cl evenly covering the Ni foam. Calcination above 400 °C transforms the Cu2(OH)3Cl to highly porous CuO. All materials display promising activity towards the reduction of 4-nitrophenol and methyl orange. Notably, our leading CuO-based material displays 4-nitrophenol reduction activity comparable with very reactive precious-metal based systems. Recyclability studies highlight the intrinsic ease of handling for the Ni foam support, and our results point to a very robust, highly recyclable catalyst system.
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Affiliation(s)
- Lorianne R Shultz
- Department of Chemistry, University of Central Florida, Orlando, Florida, 32816, USA
| | - Konstantin Preradovic
- Department of Chemistry, University of Central Florida, Orlando, Florida, 32816, USA
| | - Suvash Ghimire
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida, 32816, USA
| | - Hayden M Hadley
- Department of Chemistry, University of Central Florida, Orlando, Florida, 32816, USA
| | - Shaohua Xie
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, Florida, 32816, USA
| | - Varchaswal Kashyap
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida, 32816, USA
| | - Melanie J Beazley
- Department of Chemistry, University of Central Florida, Orlando, Florida, 32816, USA
| | - Kaitlyn E Crawford
- Department of Chemistry, University of Central Florida, Orlando, Florida, 32816, USA
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida, 32816, USA
- NanoScience and Technology Center (NSTC), University of Central Florida, Orlando, Florida, 32826, USA
- Biionix Faculty Cluster, University of Central Florida, Orlando, Florida, 32816, USA
| | - Fudong Liu
- Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, Florida, 32816, USA
- Biionix Faculty Cluster, University of Central Florida, Orlando, Florida, 32816, USA
- Renewable Energy and Chemical Transformation Faculty Cluster (REACT), University of Central Florida, Orlando, Florida, 32816, USA
| | - Kausik Mukhopadhyay
- Department of Materials Science and Engineering, University of Central Florida, Orlando, Florida, 32816, USA
- Advanced Materials Processing and Analysis Center, University of Central Florida, Orlando, Florida, 32826, USA
| | - Titel Jurca
- Department of Chemistry, University of Central Florida, Orlando, Florida, 32816, USA
- NanoScience and Technology Center (NSTC), University of Central Florida, Orlando, Florida, 32826, USA
- Renewable Energy and Chemical Transformation Faculty Cluster (REACT), University of Central Florida, Orlando, Florida, 32816, USA
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Zhao W, Cao H, Ruan L, He S, Xu Z, Zhang W. High-performance self-supporting AgCoPO 4/CFP for hydrogen evolution reaction under alkaline conditions. RSC Adv 2022; 12:15751-15758. [PMID: 35685712 PMCID: PMC9131870 DOI: 10.1039/d2ra02621j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/10/2022] [Indexed: 11/21/2022] Open
Abstract
Electrochemical water decomposition to produce hydrogen is a promising approach for renewable energy storage. It is vital to develop a catalyst with low overpotential, low cost and high stability for hydrogen evolution reaction (HER) under alkaline conditions. Herein, we used a simple hydrothermal method to obtain a AgCo(CO)4 precursor on the surface of carbon fiber paper (CFP). After thermal phosphorization, the self-supporting catalyst AgCoPO4/CFP was obtained, which greatly improved the HER catalytic performance under alkaline conditions. At 10 mA cm-2, it showed an overpotential of 32 mV. The Tafel slope was 34.4 mV dec-1. The high catalytic performance of AgCoPO4/CFP may be due to the hydrophilic surface promoting effective contact with the electrolyte and the synergistic effect of the two metals, which accelerated electron transfer and thus promoted hydrogen evolution reaction. In addition, it showed an outstanding urea oxidation reaction (UOR) activity. After adding 0.5 M urea, the over-potential of the AgCoPO4/CFP assembled electrolytic cell was only 1.45 V when the current density reached 10 mA cm-2, which was much lower than that required for overall water splitting. This work provides a new method for the design and synthesis of efficient HER electrocatalysts.
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Affiliation(s)
- Wan Zhao
- School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200241 China
| | - Hongshuai Cao
- School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200241 China
| | - Liting Ruan
- School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200241 China
| | - Shaoying He
- School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200241 China
| | - Zhiai Xu
- School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200241 China
| | - Wen Zhang
- School of Chemistry and Molecular Engineering, East China Normal University Shanghai 200241 China
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7
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Electrocatalyst based on Ni 2P nanoparticles and NiCoP nanosheets for efficient hydrogen evolution from urea wastewater. J Colloid Interface Sci 2022; 608:2932-2941. [PMID: 34801236 DOI: 10.1016/j.jcis.2021.11.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 11/22/2022]
Abstract
Urea electrolysis is a promising approach to produce hydrogen while simultaneously purifying urea-rich wastewater. In practice, it is highly desirable but still challenging, through the structure construction strategy, to implement a method with controllable synthesis of ultra-thin nanosheet arrays with rich interfaces, and then apply them into the catalysis operations of hydrogen evolution reaction (HER) and urea oxidation reaction (UOR). In this work, the bifunctional electrocatalyst Ni2P/NiCoP nanosheets anchored nickel foam (NF) were prepared with ultra-thin rich interfaces by regulating the Co- and P-doping. The results showed that the elaborated Ni2P/NiCoP/NF electrode delivered the excellent electrocatalytic activities for both UOR and HER operations. Particularly for UOR, it required only a cell voltage of 1.41 V at 100 mA cm-2, which was 400 mV lower than that in the traditional overall water splitting operation.
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8
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Sharma P, Han J, Park J, Kim DY, Lee J, Oh D, Kim N, Seo DH, Kim Y, Kang SJ, Hwang SM, Jang JW. Alkali-Metal-Mediated Reversible Chemical Hydrogen Storage Using Seawater. JACS AU 2021; 1:2339-2348. [PMID: 34977902 PMCID: PMC8715542 DOI: 10.1021/jacsau.1c00444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Indexed: 06/14/2023]
Abstract
The economic viability and systemic sustainability of a green hydrogen economy are primarily dependent on its storage. However, none of the current hydrogen storage methods meet all the targets set by the US Department of Energy (DoE) for mobile hydrogen storage. One of the most promising routes is through the chemical reaction of alkali metals with water; however, this method has not received much attention owing to its irreversible nature. Herein, we present a reconditioned seawater battery-assisted hydrogen storage system that can provide a solution to the irreversible nature of alkali-metal-based hydrogen storage. We show that this system can also be applied to relatively lighter alkali metals such as lithium as well as sodium, which increases the possibility of fulfilling the DoE target. Furthermore, we found that small (1.75 cm2) and scaled-up (70 cm2) systems showed high Faradaic efficiencies of over 94%, even in the presence of oxygen, which enhances their viability.
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Affiliation(s)
- Pankaj Sharma
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Jinhyup Han
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Jaehyun Park
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Dong Yeon Kim
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Jinho Lee
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Dongrak Oh
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Namsu Kim
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Dong-Hwa Seo
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Youngsik Kim
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Seok Ju Kang
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
| | - Soo Min Hwang
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
- SKKU
Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ji-Wook Jang
- School
of Energy and Chemical Engineering, Ulsan
National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic
of Korea
- Emergent
Hydrogen Technology R&D Center, Ulsan
National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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Zhang J, Liu Y, Zhang J, Zhang Y, Yuan S, Wang D, Lian J, Jiang Q, Wang G. A self-supporting bifunctional catalyst electrode made of amorphous and porous CoP3 nanoneedle array: exhaling during overall water splitting. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Yang XF, Li J, Yang XM, Li CX, Li F, Li B, He JB. High-Performance Bifunctional Ni-Fe-S Catalyst in situ Synthesized within Graphite Intergranular Nanopores for Overall Water Splitting. CHEMSUSCHEM 2021; 14:3131-3138. [PMID: 34076965 DOI: 10.1002/cssc.202100891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/01/2021] [Indexed: 06/12/2023]
Abstract
Low-cost and efficient bifunctional catalysts are urgently needed for overall water splitting used in large-scale energy storage. In this study, we develop a nickel and iron (di)sulfide (Ni-Fe-S) composite catalyst that is in situ synthesized and fixed within the intergranular nanopores inside high pure polycrystalline graphite. Two precursor solutions (reactants) may permeate the graphite intergranular pores to a depth of more than 3.5 mm. The nanoscale pores serve as an array of nanoreactors for the synthesis of the Ni-Fe-S nanoparticles under conditions much milder than usual. The prepared catalyst efficiently catalyzes both the hydrogen and oxygen evolution reactions (HER and OER) in 1.0 M KOH. It delivers a current density of 400 mA cm-2 at a full cell voltage of around 2.3 V without considerable activity decay over 24 h electrolysis. The active species of the catalyst are different for the HER and OER and discussed accordingly. The synthesis strategy based on the nanopores in a monolithic conductive substrate proves to be a simple, efficient, and promising way to prepare electrocatalysts that are cheap, abundant, and industrially attractive.
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Affiliation(s)
- Xiao-Fan Yang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China
| | - Jing Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China
| | - Xin-Ming Yang
- Anhui Province Key Laboratory of Green Manufacturing of Power Battery, Tianneng, Jieshou, 236500, P.R. China
| | - Chao-Xiong Li
- Anhui Province Key Laboratory of Green Manufacturing of Power Battery, Tianneng, Jieshou, 236500, P.R. China
| | - Fang Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China
- Anhui Province Key Laboratory of Green Manufacturing of Power Battery, Tianneng, Jieshou, 236500, P.R. China
| | - Bing Li
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China
- Anhui Province Key Laboratory of Green Manufacturing of Power Battery, Tianneng, Jieshou, 236500, P.R. China
| | - Jian-Bo He
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China
- Anhui Province Key Laboratory of Green Manufacturing of Power Battery, Tianneng, Jieshou, 236500, P.R. China
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