Electrochemical Performance of Mg-doped Li2FeSiO4/C as Cathode Material for Lithium-ion Batteries

摘要：

　　Li2FeSiO4/C and Li1.97Mg0.03FeSiO4/C composites were successfully prepared by a solid-state method.Both samples were systematically investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),the charge-discharge test and electrochemical impedance spectra measurement,respectively.It was found that the Li1.97Mg0.03FeSiO4/C composite exhibited an excellent rate capability with a discharge capacity of 144mAh g-1 at 0.2C and 97mAh g-1 at 5C,and after 100 cycles at 1 C,96% of its initial capacity was retained.

关键词： Lithium ion battery solid-state reaction Li2FeSiO4 Mg-doping

作者: Xiaobing Huang Honghui Chen Huangrong Li Qianpeng Yang Shibiao Zhou Yuandao Chen Beiping Liu Jifeng Yang

作者单位: College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, Changde 415000, Changde lyrun new material Co.Ltd., Changde 415001, China College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, Changde 415000,

会议类型: 国际会议

会议名称: 2012 International Conference on Engineering Materials,Geotechnical Engineering and Environmental Engineering(EMGEEE2012)(2012工程材料、岩石工程和环境工程国际会议)

会议地点: 石家庄

会议语种:英文

页码: 90-94

在线出版日期: 2012-10-26（万方平台首次上网日期，不代表论文的发表时间）