以β-Co(OH)_2为前驱体合成LiCoO_2的研究  

Synthesis of LiCoO_2 Using β-Co(OH)_2 as Precursor

作　　者：常照荣[1] 徐秋红[1] 汤宏伟[1] 齐霞[1] 吴锋[2] 

机构地区：[1]河南师范大学化学与环境科学学院,河南新乡453007 [2]北京理工大学化工与环境工程学院,北京100080

出　　处：《化学世界》2006年第1期9-11,15,共4页Chemical World

基　　金：河南省教育厅科技攻关项目(2002150006)

摘　　要：在空气气氛下,以自制的结晶度高的-βCo(OH)2为前驱体,固相合成了锂离子电池正极材料LiCoO2。研究了反应预处理方式、研磨时间、锂源、锂钴初始摩尔比、煅烧温度和时间等合成条件对产品结构的影响。实验发现:以LiOH.H2O为锂源、锂钴初始摩尔比为1,采取混合研磨后压块的预处理方式有利于合成反应的进行。随研磨和煅烧时间的延长,产物的衍射峰强度增大,层状结构更完美。The cathode material LiCoO2 for lithium ion battery was prepared by solid state reaction using home-made β-Co（OH）2 as precursor. The effects of pretreatment method, grinding time, lithium resource, the initial Li：Co molar ratio, calcination temperature and time on products were investigated. The results showed that employing LiOH-H2O as lithium resource and mixing the raw materials thoroughly by grinding and pressing into pellets are beneficial to the preparation. The longer the grinding and calcination time, the stronger the characteristic XRD peaks and the better the crystallinity of the product.

关 键 词：β-Co(OH)2 LICOO2 锂离子电池 正极材料 

分 类 号：TM912.9[电气工程—电力电子与电力传动]