微型锂电池LiMn_2O_4正极薄膜掺杂改性研究  

Research Progress on the Doping Modification of LiMn_2O_4 Thin Films as Cathode Materials of Micro Lithium Battery

作　　者：苌清华[1] 陈海云[2] 赵胜利[1,2] 文九巴[1,2] 秦启宗[3] 

机构地区：[1]河南科技大学材料学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003 [3]复旦大学激光化学研究所,上海200433

出　　处：《化学世界》2008年第12期749-752,共4页Chemical World

基　　金：国家自然科学基金(20504026);河南省教育厅自然科学计划项目(2006430005)

摘　　要：LiMn2O4薄膜正极材料因具备工作电压高、安全性能好、对环境友好、成本低等优点成为全固态薄膜锂电池领域近年来研究的热点。然而,较差的循环性能制约着其作为锂电池正极材料的进一步应用。大量研究表明,金属元素掺杂可明显提高LiMn2O4薄膜的循环稳定性,受到国内外学者的重视。简要分析了尖晶石LiMn2O4薄膜容量衰减的主要原因,着重评述了近年来金属元素掺杂对其改性研究进展。LiMn2O4 film is a promising cathode material used in all-solid-state thin-film lithium battery for its high potential, good safety performance, low cost and nontoxicity. However, poor cycle stability is the most important factor to prevent its further applications. Doping a few metal elements in LiMn2 O4 film will markedly improve its structure stability and cycling performance, which attracts much attention recently. In this paper, the capacity loss mechanism of spinel LiMn2O4 film is analyzed and the modification by doping metal elements in recent years is reviewed.

关 键 词：LIMN2O4 薄膜 容量衰减 掺杂 

分 类 号：TM912.9[电气工程—电力电子与电力传动]