Chinese Journal of Catalysis ›› 2023, Vol. 51: 5-48.DOI: 10.1016/S1872-2067(23)64486-9

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Advances and insights in amorphous electrocatalyst towards water splitting

Xiaohan Wanga, Han Tianb,*(), Xu Yub, Lisong Chenc, Xiangzhi Cuia,b,*(), Jianlin Shib   

  1. aSchool of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang, China
    bState Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
    cShanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
  • Received:2023-04-29 Accepted:2023-07-03 Online:2023-08-18 Published:2023-09-11
  • Contact: *E-mail: cuixz@mail.sic.ac.cn (X. Cui), tianhan@mail.sic.ac.cn (H. Tian).
  • About author:Xiangzhi Cui received her Ph.D. degree in 2009 at Shanghai Institute of Ceramics, Chinese Academy of Sciences, and has been working at the institute since then. Now she is a full professor of the Institute. Her main research interest includes the structural design and synthesis of nanostructured composites, and the electrochemical catalysis for clean energy.
    Han Tian received his Ph.D. degree in 2021 at Shanghai Institute of Ceramics, Chinese Academy of Sciences, and has been working as a postdoctor at the institute since then. His main research interest includes the structural design and synthesis of nanostructured composites in water splitting and proton exchange membrane fuel cells.
  • Supported by:
    National Natural Science Foundation of China(52172110);“Scientific and Technical Innovation Action Plan” China Science & Technology Cooperation Project of Shanghai Science and Technology Committee(21520760500);“Super Postdoctoral Incentive Program” of Shanghai Municipal Human Resources and Social Security Bureau(2021411);Special Research Assistant Grant Project from Chinese Academy of Sciences

Abstract:

Amorphous materials can markedly enhance the active site amount and optimize the adsorption and desorption of reactants owing to the special structural characteristics of large numbers of randomly oriented bonds and surface-exposed defects. Therefore, many amorphous electrocatalysts have emerged for effectively catalyzing water splitting. Considering the advancement of novel in-situ techniques and theoretical density functional theory calculations, significant progress emerging in amorphous electrocatalysts for water splitting needs to be summarized urgently. Herein, the recent progress of amorphous catalyst materials in water splitting has been systematically reviewed, emphasizing key issues of synthesis methods, stabilization strategies, performance evaluation, mechanistic understanding, integrated experiments, and theoretical studies in water splitting, including hydrogen evolution reaction, oxygen evolution reaction, and overall water splitting. This study focuses on these topics to present the most updated results and the perspectives and challenges for the future development of amorphous electrocatalysts toward water splitting.

Key words: Amorphous catalyst, Defect engineering, Water splitting, Hydrogen evolution reaction, Oxygen evolution reaction