LiCoO_2对LiMn_2O_4改性过程的研究  

Studies on Process of LiMn_2O_4Modified by LiCoO_2

作　　者：卢世刚[1] 李明勋[1] 黄松涛[1] 蔡振平[1] 颜广炅[1] 金维华[1] 

机构地区：[1]北京有色金属研究总院矿冶所,北京100088

出　　处：《无机化学学报》2004年第4期455-458,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目(No.50074012)。

摘　　要：Modified lithium manganese oxides were prepared by using LiMn 2 O 4 and LiCoO 2 as precursors by solid state reaction.A study has been carried out by TG - DSC,XRD and FTIR to analyze the reaction process and structural characterization of products.The results showed that the LiMn 2 O 4 reacted chemically with LiCoO 2 at high temper - ature.Li and Co atom could insert into the LiMn 2 O 4 crystal lattice and obtained the Cobalt - Doped spinel com - pound.The results of constant - current cyclic test showed that the cyclic stability of the products are increased with the amount of doped LiCoO 2 ,while their initial capacity is decreased.Modified lithium manganese oxides were prepared by using LiMn 2 O 4 and LiCoO 2 as precursors by solid state reaction.A study has been carried out by TG - DSC,XRD and FTIR to analyze the reaction process and structural characterization of products.The results showed that the LiMn 2 O 4 reacted chemically with LiCoO 2 at high temper - ature.Li and Co atom could insert into the LiMn 2 O 4 crystal lattice and obtained the Cobalt - Doped spinel com - pound.The results of constant - current cyclic test showed that the cyclic stability of the products are increased with the amount of doped LiCoO 2 ,while their initial capacity is decreased.

关 键 词：锂钴复合氧化物 锂锰复合氧化物 改性过程 锂离子电池 正极材料 高温热处理 

分 类 号：TM911.14[电气工程—电力电子与电力传动]