Synthesis and Properties of the Modification of Micro-Crystal LiMn_(2-x)Al_xO_4 Cathode Material for Li-Ion Batteries  

作　　者：SUN Lishui SUN Yueheng LI Chaoqin 孙立水;;SUN Yueheng;LI Chaoqin(Engineering Research Center of High Performance Polymer(Ministry of Education),Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]Engineering Research Center of High Performance Polymer(Ministry of Education),Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第1期79-81,共3页武汉理工大学学报（材料科学英文版）

基　　金：the Science and Research Reward Fund Program of Shandong Excellent Young Scientist of China (No. 2007BS04044)

摘　　要：The micro-single crystal material spinel LiMn2-xAlxO4 was prepared by a sol-gel procedure and modified by alumina; the electrochemical measurements show that the performances and characteristics of modified LiMn2-xAlxO4 electrode material are better than those of LiMn204. Hence, the modified LiMn2- AlxO4 is a good cathode material for lithium batteries. This can be explained that the size of the modified particle is larger than that of unmodified material, so electrons can be easily transported between the particles.The micro-single crystal material spinel LiMn2-xAlxO4 was prepared by a sol-gel procedure and modified by alumina; the electrochemical measurements show that the performances and characteristics of modified LiMn2-xAlxO4 electrode material are better than those of LiMn204. Hence, the modified LiMn2- AlxO4 is a good cathode material for lithium batteries. This can be explained that the size of the modified particle is larger than that of unmodified material, so electrons can be easily transported between the particles.

关 键 词：LiMn2-xAlxO4 micro-crystal spinel structure MODIFICATION LIMN204 cathode material 

分 类 号：TM912[电气工程—电力电子与电力传动] TB3[一般工业技术—材料科学与工程]