Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8955666 | Materials Letters | 2018 | 14 Pages |
Abstract
Carbon-coated cobalt sulfide@reduced graphene oxide (CoS@rGO@C) composite was innovatively synthesized by a simple solvothermal reaction and subsequent carbon coating process for use as the anode material in sodium-ion batteries (SIBs). In this composite structure, the rGO network and extra outer carbon coating worked synergically to achieve excellent electrode architecture stability upon long-term cycling. Specifically, the CoS@rGO@C composite anode demonstrated superior reversible capacity (706â¯mAh·gâ1 at 100â¯mA·gâ1 at the 1st cycle), high rate capability (374â¯mAh·gâ1 at 1.6â¯A·gâ1), and remarkably stable cycling performance (80% capacity preservation for up to 100 cycles) based on the synergistic action of rGO and carbon coating on CoS. In addition to improving the electrochemical performance of CoS anodes, this composite material strategy can be conveniently adapted to other metal-based anode designs to improve their cycling stability and promote their application in energy storage.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Hao Jia, Mahmut Dirican, Chen Chen, Pei Zhu, Chaoyi Yan, Xia Dong, Zhuang Du, Jiansheng Guo, Jiasheng Wang, Fangcheng Tang, Jinsong Tao, Xiangwu Zhang,