Chinese Journal of Catalysis ›› 2019, Vol. 40 ›› Issue (s1): 11-16.

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Investigation of surface processes in electrocatalysis by scanning tunneling microscopy

WANG Xiang1,2, WANG Dong1,2, WAN Lijun1,2   

  1. 1 CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Online:2019-12-17 Published:2019-10-10
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21725306, 21433011, 91527303); the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB12020100), and the National Key R&D Program of China (2017YFA0204702).

Abstract: The development of electrochemical energy technology is of great significance for solving the energy and environment problems. Investigating the processes of electrocatalytic reactions on the electrode surface at the atomic and molecular scale benefits reaction mecha-nisms studies, and provides the fundamental guideline for designing high-efficient and stable electrocatalysts. This review summarizes recent studies on investigating surface processes in electrocatalysis by scanning tunneling microscopy, including non-reactive processes such as surface adsorption, surface diffusion, reactants binding, and reaction processes such as structure changes and contrast transformations of catalysts, as well as distinguishing active sites. The key scientific issues and future developments in the field are also outlined.

Key words: Scanning tunneling microscopy, Surface and interface, Electrocatalytic process, Electrocatalyst, Reaction mechanism