Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (5): 20220028.doi: 10.7503/cjcu20220028

• Review • Previous Articles     Next Articles

Atomically Dispersed Metal-Nitrogen-Carbon Catalysts for Oxygen Reduction Reaction

XU Siran1, YIN Hengbo1, XUE Dongping1, XIA Huicong1, ZHAO Shuyan1, YAN Wenfu2, MU Shichun3, ZHANG Jianan1()   

  1. 1.College of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China
    2.State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China
    3.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China
  • Received:2022-01-12 Online:2022-05-10 Published:2022-03-15
  • Contact: ZHANG Jianan E-mail:zjn@zzu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21875221);the Program for Young Innovative Talents Teams in Zhengzhou University, China(32320275)

Abstract:

To further accelerate the large-scale development and application of proton exchange membrane fuel cell(PEMFC) energy conversion technology, improving the cost-effectiveness of the catalyst is a prerequisite. Currently, atomically dispersed metal-nitrogen-carbon(M-N-C) catalysts also take tremendous potential in terms of increased active site density, atomic utilization and catalytic activity compared to noble metal-based catalysts such as platinum-based catalysts, and are the most promising candidate of platinum-based catalysts. During the preparation of atomically dispersed M-N-C catalysts, the contribution of the uniform dispersion and the optimal structural system of all active sites are the challenge issues. On this basis, we focused on the preparation of various M-N-C catalysts with favorable atomic dispersion and the effect of chemical environment modulation of atoms in different catalysts on the catalytic sites. Herein, we provide an in-depth discussion on the synthesis and characterization of M-N-C catalysts, reaction mechanism, and density functional theory calculations, focusing on the regulation of the chemical environment of catalytic sites by bimetallic sites, atomic cluster structure and heteroatoms. Finally, the problems of the large-scale application of atomically dispersed M-N-C catalysts and the development directions for further optimization are presented.

Key words: Metal-N-C, Atomic dispersion, Dual-metal sites, Atomic cluster structure, Heteroatom

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