无机材料学报

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超声配位前驱体法合成锂离子电池正极材料LiMn2-xCrxO4

沈培智, 黄玉代, 刘浪, 贾殿赠   

  1. 新疆大学应用化学所, 乌鲁木齐 830046
  • 收稿日期:2005-04-04 修回日期:2005-08-08 出版日期:2006-03-20 网络出版日期:2006-03-20

Preparation of LiMn2-xCrxO4 for Cathode Material of Lithium Ion Battery by Ultrasonic Coordination Precursor Method

SHEN Pei-Zhi, HUANG Yu-Dai, LIU Lang, JIA Dian-Zeng   

  1. Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, China
  • Received:2005-04-04 Revised:2005-08-08 Published:2006-03-20 Online:2006-03-20

摘要: 采用超声配位前驱体法制备了锂离子电池正极材料LiMn2-xCrxO4(0≤x≤0.1). 利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、循环伏安(CV)和充放电测试对样品进行了表征. 结果表明, 用该方法合成的LiMn2-xCrxO4(0≤x≤0.1)样品形貌规整, 具有较高的放电容量和较好的循环性能, 同时该方法的提出开辟了锂离子电池正极材料制备的新途径.

关键词: 超声配位前驱体, 掺杂, 锂离子电池, LiMn2-xCrxO4

Abstract: The cathode material LiMn2-xCrxO4(0≤x≤0.1) was prepared by the ultrasonic coordination precursor method. The synthesized materials were characterized by X-ray diffraction, scanning electron microscope, cyclic voltammetry and charge-discharge testing. The results show that the LiMn2-xCrxO4(0≤x≤0.1) powders have prefect surface morphology, highly discharge capacities and better cycle
performance. In addition, the method can be employed to synthesize cathode
material for lithium-ion battery as a new route.

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