无机材料学报

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锂离子电池镍系正极材料的热稳定性研究进展

袁荣忠; 瞿美臻; 于作龙   

  1. 中国科学院成都有机化学研究所 成都 610041
  • 收稿日期:2002-08-19 修回日期:2002-09-23 出版日期:2003-09-20 网络出版日期:2003-09-20

Thermal Stability of Nickel-based Lithium Transition Metal Oxides as the Cathode Materials for Lithium-ion Batteries

YUAN Rong-Zhong; QU Mei-Zhen; YU Zuo-Long   

  1. Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041; China
  • Received:2002-08-19 Revised:2002-09-23 Published:2003-09-20 Online:2003-09-20

摘要: 镍酸锂作为高性能、低成本的锂离子电池正极材料已倍受关注.但存在一些实用化的困难,热稳定性差即是主要的因素之一.本文综述了镍酸锂材料在全锂或电化学脱锂状态下的热行为和热分解机理的最新研究进展;概述了以解决镍酸锂用作锂离子电池正极材料的热稳定性问题所进行的各种改性研究情况.

关键词: 锂离子电池, 正极材料, 镍酸锂, 热稳定性

Abstract: Lithium nickel oxide as the positive electrode of rechargeable lithium ion batteries with a high
energy density and lower cost has aroused more and more interests. However, LiNiO2 has a few disadvantages which prevent this material
from being used as a cathode material for rechargeable lithium ion batteries. Poor thermal stability is one of its major disadvantages.
In this paper, the progress in recent researches on the thermal behavior of full-lithiated, electrochemically delithiated Li1-xNiO2
and the thermal decomposition mechanism were reviewed, and the studies for developing nickel-based lithium transition metal oxides with improved thermal
stability as cathode materials were summarized.

Key words: Li-ion batteries, cathodes, lithium nickel oxide, thermal stability

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