锑
阳极
钴
材料科学
锂(药物)
兴奋剂
碳纤维
电池(电)
锂离子电池
无机化学
作者
Zhonghua Zhang,Xiujuan Yan,Chunru Li,He Song,Changming Mao,Hongrui Peng,Guicun Li
标识
DOI:10.1016/j.jallcom.2019.153500
摘要
Abstract As a high capacity anode material, antimony and their alloys receive increasing research interest. However, the large volume change during cell cycling still hinders their practical application. Herein, a new type of nitrogen-doped carbon sphere encapsulating antimony-cobalt antimony binary nanoseeds is developed as anode material for Lithium ion batteries by a combined polydopamine coating and annealing method. The incorporation with CoSb2 and nitrogen-doped carbon matrix not only guarantees the high electronic conductivity, but could effectively alleviate the volume changes during cell cycling. The composites consisting of intermetallic CoSb2 electrode for LIBs exhibit the excellent charge/discharge rate capability of 320.2 mAh g−1 at 10.0 A g−1 and the high specific capacity of 878.2 mAh g−1 after 500 cycles at 1 A g−1, which offers a potential for the material design of the high performance of lithium-ion batteries.
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