LiCoO_2的TiO_2包覆原理探索研究  

Mechanism of TiO_2 coating on LiCoO_2

作　　者：孙文彬[1,2] 谢嫚[1] 张联齐[2] 陈人杰[1] 刘兴江[2] 

机构地区：[1]北京理工大学化工与环境学院,北京100081 [2]中国电子科技集团公司第十八研究所,天津300381

出　　处：《电源技术》2012年第1期75-78,共4页Chinese Journal of Power Sources

摘　　要：文献中对LiCoO2材料的表面包覆已经进行大量的报道,清晰显示LiCoO2的表面改性对材料循环性能产生了重要正性效应。然而,材料的包覆原理和作用机制直到目前仍然模糊不清,没有一个确定统一定论。采用溶胶-凝胶法,结合TiO2与LiCoO2体相反应的研究结果,详细地研究了TiO2对LiCoO2的包覆效应,建议了可能包覆原理和作用机制。Recently,a lot of efforts were dedicated to the investigation on TiO2-coated LiCoO2,indicating that the surface-coating produced remarkable improvement in cycle ability.However,the working mechanism of surface-coating was still unclear so far.In this work,in combination with the study on the phase thermal stability of coating materials against LiCoO2,TiO2-coated LiCoO2 was investigated in detail by a sol-gel coating route and further a possible coating process and working mechanism of coating materials were proposed.

关 键 词：TIO2 LICOO2 表面包覆 锂离子电池 

分 类 号：TM912.9[电气工程—电力电子与电力传动]