掺锂量对锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的影响研究  

Study on the Influence of Li-dopping of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 for Li-ion Batteries

作　　者：张梅有[1] 张正国[2] 王利民 侯春平 龚波林 

机构地区：[1]宁夏电力公司教育培训中心,宁夏银川750021 [2]北方民族大学化学与化学工程学院,宁夏银川750021 [3]宁夏共享新能源材料有限公司,宁夏银川750021

出　　处：《广州化工》2013年第20期42-43,57,共3页GuangZhou Chemical Industry

基　　金：宁夏回族自治区自然科学基金(No:NZ13261)

摘　　要：采用共沉淀法,分别控制锂过量3%、5%和7%,制备了LiNi1/3Co1/3Mn1/3O2的前驱体,把真空干燥后的前驱体置于空气气氛下的马弗炉中,控制煅烧温度为900℃,对该前驱体进行煅烧。对所得样品进行XRD、SEM表征、电性能测试,根据XRD图、SEM图和充放电循环曲线,探讨了不同掺锂量对产物的影响,最后得到过锂3%条件下煅烧的材料形貌和电化学性能最佳的结论。The precursors of LiNi1/3Co1/3Mn1/3O2 were prepared by coprecipitation method, respectively, controlled the lithium excess of 3% , 5% and 7%. The precursors were transferred into muffle furnace in air atmosphere after vacuum drying, and calcined the precursors at 900 ~C. The effects of different Li - dopping amount on the products were discussed by using XRD, SEM and charge/discharge test. The testing results showed that the morphology and electrochemical performance of the product with 3 % lithium excess were the best.

关 键 词：锂离子电池 正极材料 过锂 三元镍钴锰 

分 类 号：TM912[电气工程—电力电子与电力传动]