锂离子电池正极材料LiMnO2的结构稳定性及电化学过程中的相变

材料导报, 2002, 16(9): 40-43.

锂离子电池正极材料LiMnO2的结构稳定性及电化学过程中的相变

赵世玺 ^1, , 刘韩星 ^2, , 李强 ^3, , 欧阳世翕 ^4,

1.武汉理工大学材料复合新技术国家重点实验室,武汉,430070

2.武汉理工大学材料复合新技术国家重点实验室,武汉,430070

3.清华大学化学系,北京,100084

4.武汉理工大学材料复合新技术国家重点实验室,武汉,430070

基金项目: 国家自然科学基金(59972026)

关键词：锂离子电池 , LiMnO2 , 结构稳定性 , 电化学相变

Structural Stability and Electrochemical Phase Transition of LiMnO2 Compounds as Cathode Materials for Li-ion Batteries

LiMnO2是同质多相化合物,不同相的结构稳定性差异很大,层状结构的LiMnO2是热力学不稳定的结构,制备相当困难.层状结构的LiMnO2是一类新的锂离子电池正极材料,它的理论比容量为270mAh/g,实际比容量也超过1 70 mAh/g.从该体系材料的合成、结构特点、稳定性以及电化学性能等方面对近几年的研究成果进行综述,分析了该化合物的斜方相比单斜层状结构稳定的内在机制以及稳定单斜层状结构LiMnO2的理论依据,讨论LiMnO2在电池充放电循环过程中的相转变以及今后的发展方向.

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锂离子电池正极材料LiMnO2的结构稳定性及电化学过程中的相变

Structural Stability and Electrochemical Phase Transition of LiMnO2 Compounds as Cathode Materials for Li-ion Batteries

参考文献