丙烯酸用量和预烧温度的协同关系对LiNi0.5Mn1.5O4电化学性能的影响  

Synergistic Effect of Acrylic Acid Dosage and Pre-sintering Temperature on Electrochemical Performance of LiNi0.5Mn1.5O4

作　　者：黄振德 张雪旺 HUANG Zhende;ZHANG Xuewang(Department of Petroleum and Chemical Engineering,Guangxi Industrial Vocational and Technical College,Nanning 530001,China;Guangxi Chemical Research Institute Co.Ltd.,Nanning 530001,China)

机构地区：[1]广西工业职业技术学院石油与化学工程系,广西南宁530001 [2]广西化工研究院有限公司,广西南宁530001

出　　处：《化工技术与开发》2020年第4期12-15,共4页Technology & Development of Chemical Industry

基　　金：广西教育厅科研立项项目(200808LX202)。

摘　　要：本文研究了丙烯酸用量与预烧温度之间协同关系的复配效应。采用丙烯酸盐自模板法,制备了5V锂离子电池LiNi0.5Mn1.5O4正极材料。经XRD、SEM和充放电循环测试,当nAA∶n金属离子=2.8∶1、预烧温度为500℃时,制备的材料为尖晶石结构,结晶度高,粒径大小均匀,在0.5C倍率的充放电循环下,首次放电容量为137mAh·g^-1,循环50次后容量保持率为94%,电化学性能优良。The synergistic effect of acrylic acid dosage and pre-sintering temperature was studied.LiNi0.5Mn1.5O4 cathode material for 5V lithium ion battery was prepared by self-template method of acrylate.Through XRD,SEM and charge-discharge cycle test,when nAA:n metal ions=2.8:1,pre-sintering temperature was 500℃,the material was spinel with high crystallinity and uniform particle size.The first discharge capacity was 137 mAh/g under 0.5C rate charge-discharge cycle,and the capacity retention rate was 94%after 50 cycles.The electrochemical performance was excellent.

关 键 词：尖晶石LiNi0.5Mn1.5O4 自模板法 协同复配效应 

分 类 号：TB311[一般工业技术—材料科学与工程] TM911[电气工程—电力电子与电力传动]