LiCoO_2表面原位包覆AlPO4及性能研究  

In situ-coating LiCoO_2 with AlPO4 and its performance

作　　者：王丹[1] 高剑[1] 李建军[1] 何向明[1] 姜长印[1] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《电源技术》2012年第3期310-312,共3页Chinese Journal of Power Sources

基　　金：教育部高等学校博士学科点专项科研基金新教师课题(20070003056);科技部"973"计划课题(2011CB935902)

摘　　要：采用AlPO4对LiCoO2进行了表面原位包覆,并通过扫描电子显微镜法(SEM)、透射电子显微镜法(TEM)、X射线衍射光谱法(XRD)及电化学性能测试等分析手段比较了未包覆和包覆后材料的性能。结果表明AlPO4包覆层均匀,厚度为20 nm左右;包覆后LiCoO2的循环性能得到显著改善。LiCoO2 was coated by AIPO4 in in situ surface method. The capabilities of the pristine and AIPO4-coated materials were compared by SEM, TEM, XRD and electrochemical testing. The results exhibit that the AIPO4 coating layer is very uniform and the thickness is about 20 nm. The cycling performance of the AIPO4-coated LiCoO2 is greatly improved.

关 键 词：锂离子电池 包覆 LICOO2 AlPO4 

分 类 号：TM912.9[电气工程—电力电子与电力传动]