Electrospun nanofibers of Co3O4 nanocrystals encapsulated in cyclized-polyacrylonitrile for lithium storage

Nanotechnology Reviews

He Chengen¹  Lai Qi²  Yang Yingkui²  Xiang Gaoqiang²  He Qiming² 

[1] Graphene R&D Center, Guangdong Xigu Tanyuan New Materials Corporation Limited, South-Central University for Nationalities, Foshan 528000, China;Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, Hubei Key Laboratory of Catalysis and Materials Science, South-Central University for Nationalities, Wuhan 430074, China;

关键词: cyclized polyacrylonitrile;    electrospun nanofibers;    composite anode;    lithium-ion batteries;   

DOI  :  10.1515/ntrev-2022-0057

来源: DOAJ

【 摘 要 】

The coupling of metal oxide nanoparticles and electrochemically active polymers has been considered as an effective way to improve the lithium storage performance of individual electrode materials. This work reports an electrospinning process followed by thermal annealing to produce composite nanofibers of cyclized-polyacrylonitrile (cPAN) containing Co3O4 nanoparticles (cPAN/Co3O4). The as-prepared cPAN/Co3O4 nanofiber exhibits a porous nanostructure with an average diameter of 85 nm. When used for lithium-ion battery, the cPAN/Co3O4 anode delivers a reversible specific capacity as high as 997.6 mA h g−1 at 0.1 A g−1, and still maintains 396.5 mA h g−1 at 1.0 A g−1. Meanwhile, the cPAN/Co3O4 anode shows good cycling stability with a retention of 81% capacity after running 50 cycles at 0.1 A g−1. The electrochemical performance of cPAN/Co3O4 significantly outperforms its individual counterparts of cPAN and Co3O4.

【 授权许可】

Unknown