高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (4): 20240490.doi: 10.7503/cjcu20240490

• 物理化学 • 上一篇    下一篇

B, N共掺杂富勒烯C70作为氧还原和氧析出非金属电催化剂的理论研究

杨思伟1(), 黄旭日2()   

  1. 1.山西工程科技职业大学汽车工程学院,晋中 030619
    2.吉林大学理论化学研究所,长春 130061
  • 收稿日期:2024-10-31 出版日期:2025-04-10 发布日期:2024-12-24
  • 通讯作者: 杨思伟 E-mail:yangsiwei@sxgkd.edu.cn;huangxr@jlu.edu.cn
  • 作者简介:黄旭日, 男, 博士, 教授, 主要从事量子化学理论计算方面的研究. E-mail: huangxr@jlu.edu.cn
  • 基金资助:
    山西省高等学校科技创新项目(2023L417)

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)

摘要:

采用密度泛函理论研究了B, N共掺杂富勒烯C70[C68B(n)N(m), nm=1~5, 分别代表B和N取代的C位点]的氧还原反应(ORR)和氧析出反应(OER)性能. 结果表明, C68B(n)N(m)在热力学上是稳定的, 且其ΔG*OOH和ΔG*O与ΔG*OH均呈良好的线性关系. 其中, C68B(4)N(2)与C68B(5)N(2)催化剂的ORR过电位为0.45 V, 与商业Pt催化剂相当; C68B(4)N(1)的OER过电位最低(0.38 V), 优于传统RuO2催化剂(0.42 V), C68B(1)N(3)也表现出与RuO2相当的OER活性. 通过精确调控B, N共掺杂位置, 可显著降低ORR与OER过电位, 提升C70的催化性能. 根据活性趋势图, C68B(n)N(m)的最佳ORR和OER活性分别出现在ΔG*OG*OH=0.92 eV和ΔG*OG*OH=1.42 eV处. 研究结果为设计和发现新的非金属碳基电催化剂提供了线索.

关键词: 非金属电催化剂, 氧还原反应, 氧析出反应, 密度泛函理论

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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