锂离子电池正极材料层状LiMnO_2的研究进展  

Research progress on layered lithium manganese oxide as cathode material for lithium-ion battery

作　　者：史鑫[1,2] 蒲薇华[2] 武玉玲[2] 范丽珍[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]清华大学核能与新能源研究院,北京100084

出　　处：《化工进展》2011年第6期1264-1269,共6页Chemical Industry and Engineering Progress

基　　金：国家973计划(2007CB209705);清华大学自主科研项目(2009THZ08064)

摘　　要：层状LiMnO2是高能量密度锂离子电池关键正极材料之一,是当前的研究热点。本文比较系统地综述了目前LiMnO2材料的国内外最新研究现状,对近期的材料制备方法和掺杂改性、表面包覆改性研究的进展情况进行了详细的分析。在已有初步实验基础上提出了将液相共沉淀与高温固相法相结合制备纳米级LiMnO2以及阴阳离子共掺杂结合熔融浸渍包覆方法提高LiMnO2循环性能等合成及改性方法,以提高结构稳定性及循环寿命。Layered LiMnO2 is a key cathode material with high energy density for lithium-ion battery,and is a hot topic of research.In this review,the recent development of preparation and modification（doping and coating）methods of layered LiMnO2 is summarized.In order to further enhance the structural and cycle stabilities,the nanosized LiMnO2 prepared by combining co-precipitation with the solid-state method is proposed,and further modifications by co-doping of cations and anions into layered LiMnO2 and well-distributed surface coating by the melt-impregnation method are suggested.

关 键 词：锂离子电池 正极材料 层状锰酸锂 

分 类 号：TM912.9[电气工程—电力电子与电力传动]