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Li F, Wu Q, Yuan W, Chen Z. Ruthenium-based single atom catalysts: synthesis and application in the electrocatalytic hydrogen evolution reaction. Dalton Trans 2024. [PMID: 38952237 DOI: 10.1039/d4dt01285b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Electrocatalytic water splitting is a promising production method for green hydrogen; however, its practical application is limited by the lack of robust catalysts for the cathode hydrogen evolution reaction (HER). Recently, the use of Ru in electrocatalytic HER has become a research hotspot because Ru has a metal-hydrogen bond strength similar to that of Pt - known for its excellent HER activity - but has a lower cost than Pt. Numerous modification strategies are available to further improve the HER activity of metal Ru such as vulcanisation, phosphating and atomisation. The atomisation strategy has attracted much attention owing to its extremely high Ru atomic utilisation efficiency and tunable electronic structures. However, isolated studies could not effectively address the bottlenecks. Therefore, to promote the effective exploration of Ru-based single-atom catalysts and clarify the research status in this field, studies on related topics (e.g. Ru single-atom catalysts, Ru dual-atom catalysts, composite catalysts containing single-atom Ru and Ru nanoparticles) have been systematically and briefly summarised herein. Finally, the research challenges and prospects of Ru-based single-atom catalysts in the HER field have been discussed, which may provide valuable insights for further research.
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Affiliation(s)
- Feng Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Qikang Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
| | - Wenjuan Yuan
- Wanjiang College, Anhui Normal University, Wuhu, 241008, China
| | - Zheng Chen
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China
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Cui Z, Jiao W, Huang Z, Chen G, Zhang B, Han Y, Huang W. Design and Synthesis of Noble Metal-Based Alloy Electrocatalysts and Their Application in Hydrogen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301465. [PMID: 37186069 DOI: 10.1002/smll.202301465] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/21/2023] [Indexed: 05/17/2023]
Abstract
Hydrogen energy is regarded as the ultimate energy source for future human society, and the preparation of hydrogen from water electrolysis is recognized as the most ideal way. One of the key factors to achieve large-scale hydrogen production by water splitting is the availability of highly active and stable electrocatalysts. Although non-precious metal electrocatalysts have made great strides in recent years, the best hydrogen evolution reaction (HER) electrocatalysts are still based on noble metals. Therefore, it is particularly important to improve the overall activity of the electrocatalysts while reducing the noble metals load. Alloying strategies can shoulder the burden of optimizing electrocatalysts cost and improving electrocatalysts performance. With this in mind, recent work on the application of noble metal-based alloy electrocatalysts in the field of hydrogen production from water electrolysis is summarized. In this review, first, the mechanism of HER is described; then, the current development of synthesis methods for alloy electrocatalysts is presented; finally, an example analysis of practical application studies on alloy electrocatalysts in hydrogen production is presented. In addition, at the end of this review, the prospects, opportunities, and challenges facing noble metal-based alloy electrocatalysts are tried to discuss.
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Affiliation(s)
- Zhibo Cui
- Institute of Flexible Electronics (IFE), Ningbo Institute of Northwestern Polytechnical University, Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
| | - Wensheng Jiao
- Institute of Flexible Electronics (IFE), Ningbo Institute of Northwestern Polytechnical University, Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
| | - ZeYi Huang
- Institute of Flexible Electronics (IFE), Ningbo Institute of Northwestern Polytechnical University, Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
| | - Guanzhen Chen
- Institute of Flexible Electronics (IFE), Ningbo Institute of Northwestern Polytechnical University, Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
| | - Biao Zhang
- Institute of Flexible Electronics (IFE), Ningbo Institute of Northwestern Polytechnical University, Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, 45 South 9th Avenue, Gao Xin, Shenzhen, Guangdong, 518057, China
| | - Yunhu Han
- Institute of Flexible Electronics (IFE), Ningbo Institute of Northwestern Polytechnical University, Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
| | - Wei Huang
- Institute of Flexible Electronics (IFE), Ningbo Institute of Northwestern Polytechnical University, Frontiers Science Center for Flexible Electronics, Northwestern Polytechnical University, 1 Dongxiang Road, Xi'an, Shaanxi, 710129, China
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Guha A, Sahoo M, Alam K, Rao DK, Sen P, Narayanan TN. Role of Water Structure in Alkaline Water Electrolysis. iScience 2022; 25:104835. [PMID: 35992077 PMCID: PMC9389238 DOI: 10.1016/j.isci.2022.104835] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/29/2022] [Accepted: 07/20/2022] [Indexed: 11/02/2022] Open
Abstract
Herein, with the help of experimental and first-principles density functional theory (DFT)-based studies, we have shown that structural changes in the water coordination in electrolytes having high alkalinity can be a possible reason for the reduced catalytic activity of platinum (Pt) in high pH. Studies with polycrystalline Pt electrodes indicate that electrocatalytic HER activity reduces in terms of high overpotential required, high Tafel slope, and high charge transfer resistances in concentrated aqueous alkaline electrolytes (say 6 M KOH) in comparison to that in low alkaline electrolytes (say 0.1 M KOH), irrespective of the counter cations (Na+, K+, or Rb+) present. The changes in the water structure of bulk electrolytes as well as that in electrode-electrolyte interface are studied. The results are compared with DFT-based analysis, and the study can pave new directions in studying the HER process in terms of the water structure near the electrode-electrolyte interface. A mechanistic insight into the alkaline hydrogen evolution reaction (HER) is provided The role of water structure/coordination variation in HER kinetics is studied The interfacial water structure variation is studied using in situ Raman studies The Pt−H coverage changes during the HER process are also investigated
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