高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

锂离子电池正极材料LiV3O8的低温合成研究

刘建睿; 王猛; 尹大川; 黄卫东   

  1. 西北工业大学凝固技术国家重点实验室, 西安 710072
  • 收稿日期:2001-04-26 修回日期:2001-07-02 出版日期:2002-05-20 网络出版日期:2002-05-20

Low-temperature Synthesis of LiV3O8 as Cathode Material for Rechargeable Lithium-ion Batteries

LIU Jian-Rui; WANG Meng; YIN Da-Chuan; HUANG Wei-Dong   

  1. State Key Laboratory of Solidification Processing; Northwestern Polytechnicaj University; Xi an 710072; China
  • Received:2001-04-26 Revised:2001-07-02 Published:2002-05-20 Online:2002-05-20

PDF (PC)

977

摘要： 以ＬｉＮＯ３和ＮＨ４ＶＯ３为原料,通过溶胶－凝胶法制备了层状锂钒氧化物ＬｉＶ３Ｏ８锂离子电池正极材料,通过ＴＧ－ＤＴＧ、ＸＲＤ等考察了合成条件对产物首次放电比容量的影响．实验结果表明,在４５０℃左右热分解２０ｈ可得到单一相产物ＬｉＶ３Ｏ８,其层状结构较为完整,电化学性能好,首次放电比容量可达３５０ｍＡｈ·ｇ－１,作为高能锂离子电池正极材料较为理想．

关键词: 锂离子电池, 锂钒氧化物, 热分解, 比容量

Abstract: Layered-type compound of lithium vanadium oxide LiV3O8 was synthesized at about 450℃ by the sol-gel method with LiNO_3 and NH3VO3 as raw
materials. The influences of synthesis conditions on the first dischargeable specific capacities of the products were discussed by means of TG--DTG and XRD.
The experimental results indicate that the product LiV3O8 obtained under the optimum synthesis conditions has perfect layered-type structure and good
electrochemical property, its first discharge specific capacity is 350mAh·g-1. It is an excellent cathode material for high-energy, long-life, rechargeable lithium-ion batteries.

Key words: lithium-ion batteries, lithium vanadium oxide, heat discomposition, specific capacity

中图分类号: