High-performance SiO/C as anode materials for lithium-ion batteries using commercial SiO and glucose as raw materials

• 作者: Zi-Long Wu Shan-Bao Ji Lie-Kai Liu Tian Xie Long Tan Hao Tang Run-Guang Sun
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1110-1117
• 页数: 8页
• 语种: 英文

摘要

Silicon monoxide(SiO)is considered as a promising anode material for lithium-ion batteries(LIBs)due to its higher capacity and longer cycle life than those of graphite and silicon,respectively.In this study,glucose was developed as a suitable and inexpensive carbon source to synthesize SiO/C composite with a high performance.In addition,the effects of the calcination temperature and the amount of carbon source on the electrochemical performance of the SiO/C composite were investigated.The addition of 5 wt％glucose and a calcination temperature of 800℃demonstrated the optimum conditions for SiO/C synthesis.The resultant SiO/C showed an initial charge capacity of 1259 mAh.g-1 and a high initial coulombic efficiency of 71.9％.A charge capacity of 850 mAh.g-1 after 100 cycles at 200 mA·g-1 was achieved,demonstrating the best value of the SiO/C-based materials.The composition changes of SiO under the calcination temperature played a significant role in the electrochemical performance.Overall,the obtained SiO/C material with a high capacity and good stability is suit-able for LIB applications as an anode material.