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电化学(中英文) ›› 2006, Vol. 12 ›› Issue (4): 442-444. 

• 研究论文 • 上一篇    下一篇

聚合物热解法还原制备LiFePO_4锂离子电池正极材料

余丽红;曹余良;张晓飞;杨汉西;艾新平;   

  1. 武汉大学化学与分子科学学院,武汉大学化学与分子科学学院,武汉大学化学与分子科学学院,武汉大学化学与分子科学学院,武汉大学化学与分子科学学院 湖北武汉430072,湖北武汉430072,湖北武汉430072,湖北武汉430072,湖北武汉430072
  • 收稿日期:2006-11-28 修回日期:2006-11-28 出版日期:2006-11-28 发布日期:2006-11-28

Structure and Electrochemical Characteristics of LiFePO_4 Prepared by the Polyacrylates-Pyrolysis-Reduction Method for Li-ion Batteries

YU Li-hong,CAO Yu-liang~*,ZHANG Xiao-fei,YANG Han-xi,AI Xin-ping   

  1. (College of Chemistry and Molecular Science,Wuhan University,Wuhan 430072,Hubei,China
  • Received:2006-11-28 Revised:2006-11-28 Published:2006-11-28 Online:2006-11-28

摘要: 应用聚丙烯酸盐热解还原法制备L iFePO4/C材料.经XRD和SEM分析,该材料具有橄榄石结构,结晶程度高,粒度分布均匀,粒径约100 nm.恒流充放电实验表明,该材料放电容量为138 mAh/g,循环性能良好.证实聚丙烯酸盐热解还原法是一种制备L iFePO4材料的新型实用方法.

关键词: 聚合物热解, LiFePO4, 锂离子电池

Abstract: The cathode material of olivine LiFePO_(4) was prepared by a novel method of polyacrylate-pyrolysis-reduction.XRD demonstrates that the material have the olivine structure.SEM photo shows an average particle-size of about 100 nm with a well distribution.Electrochemical test of cycling at a constant current reveals the discharge capacity of 138 mAh/g and a good cycling stability.It is a novel practicable technology to prepare LiFePO_(4) by using polyacrylate-pyrolysis-reduction method.

Key words: Polymer-pyrolysis, LiFePO_(4), Li-ion batteries, Cathode material

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