J4 ›› 2009, Vol. 47 ›› Issue (4): 823-826.

• 材料科学 • 上一篇    下一篇

锂离子电池正极材料Li[CoxLi 1/3-x/3Mn2/3-2x/3]O2的制备与表征

陈红1,2, 徐春艳3, 魏英进1, 王春忠1   

  1. 1. 吉林大学 材料科学与工程学院, 长春 130012|2. 北华大学 物理学院, 吉林 吉林 132013|3. 襄樊525泵业有限公司, 湖北 襄樊  |441021
  • 收稿日期:2008-11-12 出版日期:2009-07-26 发布日期:2009-08-24
  • 通讯作者: 王春忠 E-mail:wcz@jlu.edu.cn

Synthesis and Characterizations of Li[CoxLi 1/3-x/3Mn2/3-2x/3]O2Cathode Materials for Lithium Secondary Batteries

CHEN Hong1,2, XU Chun yan3, WEI Ying jin1, WANG Chun zhong1   

  1. 1. College of Materials Science and Engineering, Jilin University, Changchun 130012, China|2. College of Physics, Beihua University, Jilin |132013, Jilin Province, China|3. Xiangfan 525 Pump Industry Co Ltd, Xiangfan |441021, Hubei Province, China
  • Received:2008-11-12 Online:2009-07-26 Published:2009-08-24
  • Contact: WANG Chun zhong E-mail:wcz@jlu.edu.cn

摘要:

采用柠檬酸盐法合成了Li[CoxLi 1/3-x/3Mn2/3-2x/3]O2(x=0.1,0.2,0.3,0.4,0.5)正极材料. 利用X射线衍射(XRD), Raman光谱和红外光谱(FTIR)等方法研究不同质量分数的Co对材料晶体结构的影响, 并分析了原因. 对不同组分的材料进行了电化学性能测试, 结果表明, 当x=0.5时, 样品充放电容量高, 循环性能优良. 

关键词: 锂离子电池, Li[CoxLi 1/3-x/3Mn2/3-2x/3]O2, Raman光谱, 红外光谱

Abstract:

Li[CoxLi 1/3-x/3Mn2/3-2x/3]O2(x=0.1,0.2,0.3,0.4,0.5) cathode materials were synthesized by means of the citric acid\|based sol\|gel method. Their structures and electrochemical properties were investigated via  XRD, Raman, FTIR and electrochemical charge\|discharge cycling. The results show  that the material with x=0.5 exhibited the highest reversible capacity and the best capacity retention.  

Key words: lithium secondary battery, Li[CoxLi 1/3-x/3Mn2/3-2x/3]O2, Raman spectrum, FTIR

中图分类号: 

  • TG156