Chinese Journal of Catalysis ›› 2024, Vol. 66: 110-138.DOI: 10.1016/S1872-2067(24)60157-9

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Research progress of anionic vacancies in electrocatalysts for oxygen evolution reaction

Ya’nan Xiaa, Jingqi Chia,*(), Junheng Tanga, Xiaobin Liua,c, Zhenyu Xiaoa,b, Jianping Laia,b, Lei Wanga,b,*()   

  1. aKey Laboratory of Eco-chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
    bCollege of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
    cCollege of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
  • Received:2024-07-15 Accepted:2024-09-09 Online:2024-11-18 Published:2024-11-10
  • Contact: *E-mail: chijingqi@qust.edu.cn (J. Chi),inorchemwl@qust.edu.cn (L. Wang).
  • About author:Jingqi Chi received her B. S. degree and Ph.D. degree from the State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China). She is currently an associate professor at Qing dao University of Science and Technology. Her research interests focus on the design and synthesis of transition metal-based nanostructures and porous MOFs materials for electrochemical applications.
    Lei Wang was awarded a Ph.D. in chemistry from Jilin University in 2006 under the supervision of Prof. Shouhua Feng. He worked as a Postdoctoral Scholar in Shandong University, the State Key Laboratory of Crystal Materials from 2008 to 2010. He is currently a professor at Qingdao University of Science and Technology. His research interests mainly focus on the design and synthesis of functional organic-inorganic hybrids and porous MOFs materials, as well as their applications in photocatalysis, electrocatalysis, lithium-ion battery, etc.
  • Supported by:
    National Natural Science Foundation of China(52072197);National Natural Science Foundation of China(52174283);National Natural Science Foundation of China(22301156);Natural Science Foundation of Shandong Province(ZR2021QE165);Youth Innovation and Technology Foundation of Shandong Higher Education Institutions, China(2019KJC004);Major Scientific and Technological Innovation Project(2019JZZY020405);Major Basic Research Program of Natural Science Foundation of Shandong Province(ZR2020ZD09);Shandong Province "Double-Hundred Talent Plan"(WST2020003);Taishan Scholar Young Talent Program(tsqn201909114);University Youth Innovation Team of Shandong Province(202201010318)

Abstract:

Renewable energy conversion as well as water electrolysis technologies are constrained by the fact that kinetics are always slow in the electrocatalytic oxygen evolution reaction (OER). There are numerous means and strategies for the enhancement of OER activity. In this paper, we systematically review the important role of anionic vacancies in enhancing the OER activity of catalysts: increasing catalyst conductivity, improving electrical conductivity, and enhancing intermediate adsorption. In order to better detect the presence of vacancies in the samples, the principle of vacancy detection is reviewed in detail in terms of both spectroscopic and microscopic characterization, and the methods of vacancy formation as well as the factors influencing the concentration of vacancies are summarized in detail. In addition, the challenges and new directions for the study of anionic vacancies are provided.

Key words: Anionic vacancy, Oxygen evolution reaction, Characterization, Introduction strategy, Detection method