东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (12): 1192-1194.DOI: -

• 论著 • 上一篇    下一篇

微波合成锂离子电池正极材料LiCoO_2

翟秀静;符岩;王云霞;于永丽   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2003-12-15 发布日期:2013-06-24
  • 通讯作者: Fu, Y.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50174016)

Microwave synthesized LiCoO2 as cathode material for lithium ion battery

Zhai, Xiu-Jing (1); Fu, Yan (1); Wang, Yun-Xia (1); Yu, Yong-Li (1)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2003-12-15 Published:2013-06-24
  • Contact: Fu, Y.
  • About author:-
  • Supported by:
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摘要： 用微波合成了锂离子电池正极材料LiCoO2,采用XRD、SEM和DC 5C电池测试仪研究了LiCoO2的结构、形貌和电化学性能·研究结果表明,在900W的功率和2 45GHz的频率下,反应10min即可得到纯度高、具有层状结构的LiCoO2电池材料,XRD谱线与标准层状LiCoO2材料基本一致,充放电的实验结果显示:放电容量可达140mAh/g,放电平台和充放电时间均显示出微波合成的LiCoO2具有较好的电化学活性·实验考查了Li/Co摩尔比对产品结构的影响,研究结果证明Li/Co比为1.05∶1时,得到的LiCoO2与标准样符合得更好·

关键词: 微波合成, 锂离子电池, 正极材料, LiCoO2, 电化学

Abstract: Specimens of cathode material LiCoO2 for lithium ion battery were prepared by microwave synthesis to investigate the microstructure, morphology and electrochemical behaviors by means of XRD, SEM and DC-5C battery tester. The results show that a high-purity layered LiCoO2 can be obtained just in a 10-min reaction process at 900 W and 2.45 GHz, The charging capacity is up to 140 mAh/g, and both the platform charging curve and time for charging/discharging demonstrate the electrochemical activity of the microwave synthesized LiCoO2. Testing experimentally the effect of the molefraction of Li to Co on the microstructure of specimens, the optimal Li/Co molefraction should be 1.05/1.

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