高等学校化学学报 ›› 2025, Vol. 46 ›› Issue (2): 20240430.doi: 10.7503/cjcu20240430

• 物理化学 • 上一篇    下一篇

N掺杂石墨烯缺陷材料催化OER/ORR的第一性原理研究

黄智瑶, 李丽, 徐华卿, 杨一凡, 韦瑶瑶(), 刘国魁(), 夏其英()   

  1. 临沂大学化学化工学院, 临沂 276000
  • 收稿日期:2024-09-16 出版日期:2025-02-10 发布日期:2024-11-06
  • 通讯作者: 韦瑶瑶,刘国魁,夏其英 E-mail:weiyaoyao@lyu.edu.cn;liuguokui@lyu.edu.cn;xiaqiying@lyu.edu.cn
  • 基金资助:
    山东省自然科学基金(ZR2021QB153)

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)

摘要:

非金属掺杂石墨烯基催化剂在催化析氧反应(OER)和氧还原反应(ORR)领域具有良好的应用前景. 本文基于石墨烯常见双空位缺陷构建了非金属N掺杂的催化材料, 对所有可能存在的活性位点进行了研究. 通过密度泛函理论(DFT)计算发现, 13个碳活性位点均不能有效吸附H2O, 而O2可以被有效吸附. 计算结果表明, 最优的ORR催化位点是C12位点, 其催化ORR的过电势为0.71 V; 毗邻吡啶N的C10位点和C3位点的ORR催化效果稍差, 过电势分别为0.75 V和0.78 V. 研究结果证明非金属N掺杂缺陷石墨烯材料可应用于催化ORR, 可为非金属催化OER/ORR反应提供理论支撑和指导.

关键词: 缺陷石墨烯, 非金属, 氧还原反应, 密度泛函理论

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

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