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Facile Composition of CoNi and Graphene as a Free-Standing Cathode for a High-Performance Solid-State Zinc–Air Battery

Author

Listed:
  • Jian Hu

    (School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Yuan Liu

    (School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China
    Institute of Laser and Optoelectronics Intelligent Manufacturing, Wenzhou University, Wenzhou 325035, China)

  • Tian Han

    (School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Lei Xu

    (School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Ningkang Sun

    (School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

The development of solid-state zinc–air batteries (SZABs) has stimulated significant interest. However, the practical use of SZABs still encounters difficulties due to the complicated preparation process and low-performance air cathode. In this study, we developed a free-standing CoNi/graphene composite cathode without current collectors and binders. The simplified cathode structure decreased the preparation process, and the self-assembled conductive matrix increased charge transfer, which holds promise for facile preparation and high-performance SZABs. Specifically, a free-standing CoNi/graphene film was fabricated by a simple composition method. The CoNi/graphene electrocatalyst exhibited comparable oxygen reduction reaction (ORR) catalytic activity to that of Pt/C. Furthermore, the CoNi/graphene film could be directly used as a cathode, which showed an open-circuit voltage of 1.41 V and a power density of 210 mW cm −2 in alkaline liquid ZABs, as well as an open-circuit voltage of 1.43 V and a power density of 40 mW cm −2 in alkaline SZABs. This facile preparation and excellent performance offer substantial potential for practical SZAB applications.

Suggested Citation

  • Jian Hu & Yuan Liu & Tian Han & Lei Xu & Ningkang Sun, 2024. "Facile Composition of CoNi and Graphene as a Free-Standing Cathode for a High-Performance Solid-State Zinc–Air Battery," Energies, MDPI, vol. 17(9), pages 1-11, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2045-:d:1382961
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