Rare Earth Elements-Doped LiCoO_2 Cathode Material for Lithium-Ion Batteries

作     者：魏进平 曹晓燕 潘桂玲 叶茂 阎杰 

作者机构：Institute of New Energy Material Chemistry College of Chemistry and Chemical Engineering State Key Laboratory of Functional Polymer Materials for Adsorption and Separation 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2003年第21卷第4期

页      面：466-468页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 08[工学] 0708[理学-地球物理学] 0703[理学-化学] 

基　　金：Projectsupportedbythe 973Programs (2 0 0 2CB2 1180 0 )ofChina 

主　　题：metallic material lithium ion battery doping cathode materials LiCoO 2 rare earths 

摘      要：Some compounds of LiCo 1- x RE x O 2 (RE=rare earth elements and x =0.01～0.03) were prepared by doping rare earth elements to LiCoO 2 via solid state synthesis. The microstructure characteristics of the LiCo 1- x RE x O 2 were investigated by XRD. It was found that the lattice parameters c are increased and the lattice volumes are enlarged compared to that of LiCoO 2. Moreover, the performance of LiCo 1- x RE x O 2 as the cathode material in lithium ion battery is improved, especially LiCo 1- x Y x O 2 and LiCo 1- x La x O 2. The initial charge/discharge capacities of LiCo 0.99 Y 0.01 O 2 and LiCo 0.99 La 0.01 O 2 are 174/154 (mAh·g -1 ) and 159/149 (mAh·g -1 ) respectively, while those for LiCoO 2 working in the same way are only 139/131 (mAh·g -1 ).