Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (2): 20240430.doi: 10.7503/cjcu20240430

• Physical Chemistry • Previous Articles     Next Articles

First-principles Study on the Catalysis of OER/ORR by N-doped Graphene with Defects

HUANG Zhiyao, LI Li, XU Huaqing, YANG Yifan, WEI Yaoyao(), LIU Guokui(), XIA Qiying()   

  1. School of Chemistry and Chemical Engineering,Linyi University,Linyi 276000,China
  • Received:2024-09-16 Online:2025-02-10 Published:2024-11-06
  • Contact: WEI Yaoyao, LIU Guokui, XIA Qiying E-mail:weiyaoyao@lyu.edu.cn;liuguokui@lyu.edu.cn;xiaqiying@lyu.edu.cn
  • Supported by:
    the Natural Science Foundation of Shandong Province, China(ZR2021QB153)

Abstract:

Non-metallic doped graphene-based catalysts have good application prospects in catalyzing oxygen evolution reaction(OER) and oxygen reduction reaction(ORR). Based on the common double vacancy defects of graphene, non-metallic N-doped catalytic material was constructed and all possible active sites were studied. Through DFT calculation, we find that none of the 13 carbon active sites can effectively adsorb H2O, while O2 can be effectively adsorbed. The calculation results show that the optimal catalytic site for ORR is C12, with the overpotential of 0.71 V for catalyzing ORR, followed by the C10 site adjacent to pyridine N and C3 site, with the overpotentials of 0.75 V and 0.78 V, respectively. This study demonstrates that non-metallic N-doped defective graphene materials can be applied to catalyze ORR, providing theoretical support and guidance for non-metallic catalysis in the OER/ORR reactions.

Key words: Defective graphene, Non-metal, Oxygen reduction reaction, Density functional theory

CLC Number: 

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