新型层状Li-Ni-Mn-O锂离子电池正极材料的研究  

Review on study on layered Li-Ni-Mn-O as novel cathode material for Li-ion battery

作　　者：张海朗 田建坤[2] 

机构地区：[1]江南大学化工学院 [2]信阳职业技术学院,河南信阳464000

出　　处：《功能材料》2007年第3期337-341,共5页Journal of Functional Materials

摘　　要：对近几年有关层状Li-Ni-Mn-O作为锂离子电池新型正极材料的研究进行了系统分析。比较了不同的合成方法及组成对材料性能的影响。对层状Li-Ni-Mn-O的结构研究及LixMnyNi1-yO2中Ni和Mn的价态研究做了系统分析与比较。其中Li Ni1/2Mn1/2O2和Li Ni0.2Li0.2Mn0.6O2是比较好的;超额Li对材料性能有利。对层状Li-Ni-Mn-O性能的改进提出了进一步改进的措施;认为应该发展低温合成方法及步骤尽量少的共沉淀法和简单燃烧法,优化和降低Ni的含量,掺杂一种或多种高价金属元素是很有前途的方法。Review is given for investigations on layered Li-Ni-Mn-O as novel cathode material for Li-ion battery in recent years and systemical analysis has been explored. Influences of different synthesizing methods and compositions on properties of layered Li-Ni-Mn-O are compared. Suggestions have been given for the measures to improve the properties of layered Li-Ni-Mn-O. LiNi1/2Mn1/2O2 and LiNi0.2 Li0.2 Mn0.6O2 are better materials. Excess Li is helpful to this kind of cathode material. Low synthesizing temperature should be searched. The ＂coprecipitation＂ with few steps and ＂simple combustion＂ are better synthesizing methods. The content of Ni should be further lowered. Specially, doping one or more metal elements with high valence is being considered to be one promising method.

关 键 词：锂离子电池 正极材料 层状Li-Ni-Mn-O 合成方法 进展 改进 

分 类 号：TM912.9[电气工程—电力电子与电力传动]