标题：Hollow nanospheres of mesoporous Co9S8as a high-capacity and long-life anode for advanced lithium ion batteries
作者：Zhou, Yanli ;Yan, Dong ;Xu, Huayun ;Feng, Jinkui ;Jiang, Xiaolei ;Yue, Jie ;Yang, Jian ;Qian, Yitai
作者机构：[Zhou, Yanli ;Yan, Dong ;Xu, Huayun ;Jiang, Xiaolei ;Yue, Jie ;Yang, Jian ;Qian, Yitai ] Key Laboratory of Colloid and Interface Chemistry, Ministry o 更多
摘要：Hollow nanospheres of mesoporous Co9S8are successfully synthesized by a facile solvothermal reaction followed with a high-temperature annealing in Ar/H2. These hollow nanoparticles exhibit a reversible capacity of ~1414mAhg-1after 100 cycles at 100mAg-1. In the course of this cycling, there is a significant capacity recovery, which is associated with enhanced capacitance caused by repeated electro-chemical milling. The growth of a carbon shell on the hollow nanospheres further improves the reversible capacities at high rates, ~896mAhg-1after 800 cycles at 2Ag-1. The excellent lithium-storage performances shed light on the promising potential of sulfides as a high capacity, high rate and long life anodes.
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