吉林大学学报(理学版)

• 材料科学 • 上一篇    下一篇

锂离子电池正极材料LiFe(MoO4)2的制备及其电化学性质

陈红1, 陈楠2, 张培松1, 梁磊1, 洪源泽1, 杜菲2, 王春忠2   

  1. 1. 北华大学 物理学院, 吉林 吉林 132013;2. 吉林大学 物理学院, 新型电池物理与技术教育部重点实验室, 长春 130012
  • 收稿日期:2015-06-15 出版日期:2015-11-26 发布日期:2015-11-23
  • 通讯作者: 王春忠 E-mail:wcz@jlu.edu.cn

Synthesis and Electrochemical Properties of LiFe(MoO4)2 as a Positive Electrode Material for Lithium Ion Batteries

CHEN Hong1, CHEN Nan2, ZHANG Peisong1, LIANG Lei1,HONG Yuanze1, DU Fei2, WANG Chunzhong2   

  1. 1. College of Physics, Beihua University, Jilin 132013, Jilin Province, China; 2. Key Laboratory of New Battery Physics and Technology, Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
  • Received:2015-06-15 Online:2015-11-26 Published:2015-11-23
  • Contact: WANG Chunzhong E-mail:wcz@jlu.edu.cn

摘要:

采用固相法合成纯相的LiFe(MoO4)2材料. 利用X射线衍射(XRD)、 扫描电子显微镜(SEM)、 透射电子显微镜(TEM)和超导量子干涉仪(SQUID)对其晶体结构及其磁学性质进行研究, 并采用恒流充放电测试研究该材料在3.0~1.0 V内的电化学性质. 电化学测试表明, LiFe(MoO4)2作为正极材料具有良好的循环性能, 稳定比容量为200 mA·h/g, 充放电效率为98.5%.

关键词: 锂离子电池, LiFe(MoO4)2, 磁学性质, 电化学性质

Abstract:

LiFe(MoO4)2 was synthesized by solid state reaction and its structural and magnetic property were investigated by Xray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and superconducting quantum interference device (SQUID). Furthermore, its
 electrochemical properties were tested between 3.0 V and 1.0 V. The electrochemical tests show that, as a positive electrode material, LiFe(MoO4)2 demonstrates good cycle performance with a reversible capacity of 200 mA·h/g and high coulombic efficiency of 98.5%, respectively.

Key words: lithiumion battery, LiFe(MoO4)2, magnetic property, electrochemical property

中图分类号: 

  • TM911