SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 63 ›› Issue (11): 43-50.DOI: 10.1016/j.cjche.2023.04.015

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COF-derived Co nanoparticles@N-doped carbon electrocatalysts for high performance Zn-air batteries

Jie Wei1, Chengcai Zhao1, Ming Chen2, Fengying Liu1, Limin Zhao1, Hui Zhao1, Zhong-Yong Yuan3   

  1. 1. School of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China;
    2. College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China;
    3. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
  • Received:2023-01-08 Revised:2023-04-03 Online:2024-01-08 Published:2023-11-28
  • Contact: Hui Zhao,E-mail:zhaohui@lcu.edu.cn;Zhong-Yong Yuan,E-mail:zyyuan@nankai.edu.cn
  • Supported by:
    This work was supported by the Natural Science Foundation of Shandong Province (ZR2019PB013) and the Training Program of Innovation and Entrepreneurship for Undergraduates of Liaocheng University (CXCY2022277).

COF-derived Co nanoparticles@N-doped carbon electrocatalysts for high performance Zn-air batteries

Jie Wei1, Chengcai Zhao1, Ming Chen2, Fengying Liu1, Limin Zhao1, Hui Zhao1, Zhong-Yong Yuan3   

  1. 1. School of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China;
    2. College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China;
    3. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
  • 通讯作者: Hui Zhao,E-mail:zhaohui@lcu.edu.cn;Zhong-Yong Yuan,E-mail:zyyuan@nankai.edu.cn
  • 基金资助:
    This work was supported by the Natural Science Foundation of Shandong Province (ZR2019PB013) and the Training Program of Innovation and Entrepreneurship for Undergraduates of Liaocheng University (CXCY2022277).

Abstract: Precise modulation of the structure and composition of electrocatalysts is critical for promoting the kinetically sluggish process of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Covalent organic frameworks (COF) offer a novel way to create highly efficient electrocatalysts due to their tunable composition, structure and surface area. Herein, we report a high-efficiency bifunctional electrocatalyst comprising Co nanoparticles embedded within N-doped carbons (Co@NCs) for Zn-air batteries (ZABs). The Co@NC is yielded via the coordination of a triazine COF with Co-containing precursors and subsequent calcination under inert atmosphere. The as-prepared Co@NC exhibits remarkable ORR/OER performance and great potential in rechargeable ZABs. The liquid ZAB constructed with Co@NC provides both high specific capacity and power density. Remarkably, the ZAB exhibits a voltage gap of 0.8 V during discharge and charge cycles and high stability for 220 h compared to the Pt/C-assembled battery. This strategy for regulating electrocatalytic activities of COF-derived carbon materials could be expanded for creating various carbon catalysts.

Key words: COF, Co@NC, Composites, Electrochemistry, Catalysis, Zn-air battery

摘要: Precise modulation of the structure and composition of electrocatalysts is critical for promoting the kinetically sluggish process of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Covalent organic frameworks (COF) offer a novel way to create highly efficient electrocatalysts due to their tunable composition, structure and surface area. Herein, we report a high-efficiency bifunctional electrocatalyst comprising Co nanoparticles embedded within N-doped carbons (Co@NCs) for Zn-air batteries (ZABs). The Co@NC is yielded via the coordination of a triazine COF with Co-containing precursors and subsequent calcination under inert atmosphere. The as-prepared Co@NC exhibits remarkable ORR/OER performance and great potential in rechargeable ZABs. The liquid ZAB constructed with Co@NC provides both high specific capacity and power density. Remarkably, the ZAB exhibits a voltage gap of 0.8 V during discharge and charge cycles and high stability for 220 h compared to the Pt/C-assembled battery. This strategy for regulating electrocatalytic activities of COF-derived carbon materials could be expanded for creating various carbon catalysts.

关键词: COF, Co@NC, Composites, Electrochemistry, Catalysis, Zn-air battery