包裹沉淀法合成锂离子二次电池正极材料LiMn_2O_4  

COPRECIPITATION COATING SYNTHESIS AND ELECTROCHEMISTRY OF SPINEL LiMn_2O_4 AS CATHODE MATERIALS FOR LITHIUM ION BATTERIES

作　　者：彭忠东[1] 胡国荣[1] 杨建红[1] 周贵海 刘业翔[1] 

机构地区：[1]中南工业大学冶金科学与工程系,长沙410083

出　　处：《中南工业大学学报》1999年第6期565-567,共3页Journal of Central South University of Technology(Natural Science)

基　　金：粉末冶金国家重点实验室资助

摘　　要：用包裹沉淀法合成了具有尖晶石结构的可用作锂离子二次电池正极材料的锂锰氧（ＬｉＭｎ２Ｏ４） 化合物．对材料进行了Ｘ射线衍射、循环伏安、充放电等测试，实验结果表明，所合成的材料具有标准尖晶石结构和较好的电化学可逆性能，该材料在ＥＣＤＭＣ（１∶１，体积比） ＋１ ｍｏｌ／ＬＬｉＰＦ６ 电解液中表现出较优良的充放电性能，其放电容量达１２０ ｍＡｈ／ｇ．The spinel LiMn 2O 4 used as cathode materials for lithium ion batteries was synthesized by coprecipitation coating process. Testing of X ray diffraction , cyclic voltammograms and charge discharge were carried out for LiMn 2O 4 cathode materials. Results showed that the synthesized materials exhibited standard spinel structure, high reversibility of electrochemistry and excellent properties of charge discharge in EC DMC(1∶1)+1 mol/L LiPF 6 electrolyte with discharge capacity 120 mAh/g.

关 键 词：锂离子电池 包裹沉淀 正极材料 二次电池 

分 类 号：TM912.2[电气工程—电力电子与电力传动] TM912.9