Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (4): 20240490.doi: 10.7503/cjcu20240490

• Physical Chemistry • Previous Articles     Next Articles

Theoretical Study of B, N Co-doped Fullerene C70 as Non-metal Electrocatalysts for Oxygen Reduction and Evolution

YANG Siwei1(), HUANG Xuri2()   

  1. 1.School of Automotive Engineering,Shanxi Vocational University of Engineering Science and Technology,Jinzhong 030619,China
    2.Institute of Theoretical Chemistry,Jilin University,Changchun 130061,China
  • Received:2024-10-31 Online:2025-04-10 Published:2024-12-24
  • Contact: YANG Siwei E-mail:yangsiwei@sxgkd.edu.cn;huangxr@jlu.edu.cn
  • Supported by:
    the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi Province, China(2023L417)

Abstract:

The oxygen reduction reaction(ORR) and oxygen evolution reaction(OER) properties for B, N co-doped fullerene C70[C68B(n)N(m), nm=1—5, representing the C atom sites substituted by B and N, respectively] were investigated utilizing density functional theory. It is found that C68B(n)N(m) are thermodynamically stable, and their ΔG*OH has a good linear relationship with ΔG*OOH and ΔG*O. Wherein, the ORR overpotential for C68B(4)N(2) and C68B(5)N(2) catalysts are both 0.45 V, which is equivalent to that of commercial Pt catalyst. The OER overpotential of C68B(4)N(1) is the lowest, 0.38 V, which is better than that of the traditional RuO2 catalyst(0.42 V). C68B(1)N(3) also shows the OER activity equivalent to that of RuO2. The overpotential of ORR and OER can be significantly reduced and the catalytic performance of C70 can be improved by accurately adjusting the sites of B and N co-doping. According to the activity trend plots, the best ORR and OER activities for C68B(n)N(m) appear at ΔG*OG*OH=0.92 eV and ΔG*OG*OH=1.42 eV, respectively. This work provides some clues for the design and discovery of novel non-metallic carbon-based electrocatalysts.

Key words: Non-metal electrocatalyst, Oxygen reduction reaction, Oxygen evolution reaction, Density functional theory

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