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Co nanoparticles combined with nitrogen-doped graphitic carbon anchored on carbon fibers as a self-standing air electrode for flexible zinc–air batteries
Journal of Materials Chemistry A ( IF 11.301 ) Pub Date : 2020/03/24 , DOI: 10.1039/d0ta00793e
Yangshen Chen; Wenhui Zhang; Zeyu Zhu; Lulu Zhang; Jiayi Yang; Huanhuan Chen; Bing Zheng; Sheng Li; Weina Zhang; Jiansheng Wu; Fengwei Huo

Although zinc–air batteries (ZABs) have been extensively studied due to their advantages, there is still room for improving flexible ZABs especially by identifying suitable self-standing flexible electrode materials. Here, flexible porous nanofibers embedded with Co nanoparticles and nitrogen-doped graphitic carbon (Co@NPCFs) have been synthesized to work as self-standing and binder-free electrodes in flexible ZABs. These unique nanofibers with nitrogen-doped graphitic carbon are beneficial for electron transport, oxygen capture and desorption of the OH ions. The Co@NPCFs could provide rich active sites and exhibit good catalytic activity for both the oxygen evolution reaction and the oxygen reduction reaction. The fabricated composites with a flexible self-standing network structure can be applied directly to flexible ZABs and contact well with gel electrolyte when bending the batteries. As a result, this strategy provides a good example of flexible self-standing electrodes for ZABs and can also be extended to other flexible electric energy storage devices.
更新日期:2020-04-15

 

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