Double role of silicon in improving the rate performance of LiFePO₄ cathode materials

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• 作者：Jian-Wei Zhao^a ; ^b ; Shi-Xi Zhao^a ; ^{zhaosx@sz.tsinghua.edu.cn} ; Xia Wu^a ; ^b ; Hong-Mei Cheng^a ; ^b ; Ce-Wen Nan^b
• 关键词：Lithium-ion battery ; Cathode material ; LiFePO4 ; Li2SiO3 coating ; Si-doping
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：30 March 2017
• 年：2017
• 卷：699
• 期：Complete
• 页码：849-855
• 全文大小：2119 K
• 卷排序：699

文摘

LiFePO4/C with particle size of about 200 nm was synthesized by a conventional solid-state method. Silicon plays double roles in improving the rate performance of LiFePO4/C cathode materials. Si-doping can enhance the electronic conductivity of LiFePO4 bulk phase. Hybrid coating of Li2SiO3 and C can improve the rate performance of LiFePO4.