锂离子电池正极材料LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2合成工艺优化  

Optimization for synthesis technology of LiNi_(0.5)Co_(0.2)Mn_(0.3)O_2 lithium ion battery cathode material

作　　者：何爱珍[1] 叶学海[1] 郅晓科[1] 赵桢[1] 王旭阳[1] 章甦[1] 时洁[1] 

机构地区：[1]中海油天津化工研究设计院,天津300131

出　　处：《无机盐工业》2013年第6期54-56,共3页Inorganic Chemicals Industry

摘　　要：以球形三元前驱体Ni0.5Co0.2Mn0.3(OH)2以及LiOH.H2O为原料,用正交实验优化锂离子电池正极材料LiNi0.5Co0.2Mn0.3O2合成工艺,考察烧结温度、保温时间以及锂与金属元素(Ni、Co、Mn总量)物质的量比等因素对材料电化学性能的影响。得到最佳条件:烧结温度为800℃,保温时间为12 h,锂与金属元素物质的量比为1.06。按最佳工艺合成的样品在0.2 C、1 C首次放电比容量分别为165.1 mA.h/g和151.6 mA.h/g,且表现出良好的循环稳定性。The synthesis technology of LiNi0.5Co0.2Mn0.3O2,a cathode material for lithium ion battery,was optimized by orthogonal experiment with Ni0.5Co0.2Mn0.3（OH）2,a spherical ternary precursor and LiOH·H2O as raw materials.The effects of calcination temperature,holding time,and the amount-of-substance ratio of lithium to metallic elements（total amounts of Ni,Co,and Mn）on the morphology and electrochemical performance of LiNi0.5Co0.2Mn0.3O2 were systematically investigated.The optimal process conditions were obtained as follows： calcination temperature was 800 ℃,holding time was 12 h,and amount-of-substance ratio of lithium to metallic elements was 1.06.The initial discharge capacities of samples prepared under the optimal conditions were 165.1 mA·h/g and 151.6 mA·h/g at 0.2 C and 1 C,respectively,and they also exhibited good cycling stability.

关 键 词：NI0 5Co0 2Mn0 3(OH)2 LiOH H2O LINI0 5Co0 2Mn0 3O2 锂离子电池 正极材料 

分 类 号：TQ131.11[化学工程—无机化工]