CoS2/N,S co-doped mesoporous carbon with 3D micro-nano crosslinked structure as efficient bifunctional oxygen electrocatalysts for zinc-air batteries

This work describes a bifunctional oxygen catalyst made of cobalt disulfide encapsulated in N,S co-doped mesoporous carbon with a novel three-dimensional micro-nano crosslinking structure.The pro-posed composite materials exhibit promising oxygen electrocatalytic activity and stability.The composite...

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Bibliographic Details
Published in:中国化学快报（英文版） 2023, Vol.34 (5), p.604-609
Main Authors: Wei Wang, Liqin Li, Jie Ouyang, Jialin Gong, Jie Tian, Liang Chen, Junlin Huang, Binhong He, Zhaohui Hou
Format: Article
Language:English
Online Access:Get full text
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Summary:This work describes a bifunctional oxygen catalyst made of cobalt disulfide encapsulated in N,S co-doped mesoporous carbon with a novel three-dimensional micro-nano crosslinking structure.The pro-posed composite materials exhibit promising oxygen electrocatalytic activity and stability.The composite assembled rechargeable zinc-air battery can achieve a high power density of 208.9 mW/cm2,and can be stably cycled for more than 160 h.Additionally,the all-solid zinc-air battery assembled with the electro-catalyst also performs admirably.The micro-nano crosslinking and high porosity structure,as well as the large number of active sites generated by the synergy of N,S doping and the close interface between car-bon matrix and CoS2,contribute to the composite's exceptional electrochemical performance.This study's rational strategy lays the path for the development of other high-performance bifunctional electrocata-lysts.
ISSN:1001-8417