锂电池富锂材料Li_(1.2)Ni_(0.13)Co_(0.13)Mn_(0.54-x)Zr_xO_2(x=0,0.02,0.05,0.10)的电特性研究  

Electrical characteristics of Li-rich materials Li_(1.2)Ni_(0.13)Co_(0.13)Mn_(0.54-x)Zr_xO_2(x=0, 0.02, 0.05,0.10) for lithium battery

作　　者：秦文东[1] 吴汉杰 黄美红[1] 赵玉超[1] 梁兴华[1] 

机构地区：[1]广西科技大学,广西柳州545006

出　　处：《电源技术》2017年第9期1271-1274,共4页Chinese Journal of Power Sources

基　　金：广西汽车零部件与整车技术重点实验室开放课题(2015KFZD02);广西汽车零部件与整车技术重点实验室自主研究课题(15-A-03-01);广西科技大学研究生教育创新计划项目(GKYC201617);广西科技大学研究生教育创新计划项目(YCSW2017200)

摘　　要：富锂材料Li_(1.2)Ni_(0.13)Co_(0.13)Mn_(0.54-x)Zr_xO_2(x=0,0.02,0.05,0.1)是采用高温固相法合成,研究中采用X射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶红外吸收光谱(FTIR)及电化学方法等手段进行了表征。实验结果表明,随着Zr含量增加,材料的晶胞参数发生较大变化,Zr的掺杂抑制了Li1.2Ni0.13Co0.13Mn0.54O2高温合成时Mn3+的产生,有利于锂离子的可逆脱嵌,所合成富锂材料的粒径分布均匀,结晶性较佳。此外,电特性测试结果表明,Li1.2Ni0.13Co0.13Mn0.49Zr0.05O2富锂材料具有较佳的电性能,0.1 C下放电比容量达366 m Ah/g,循环100次后放电比容量保持率为96%。Li-rich materials Li1.2Ni0.13Co0.13Mn0.54- ZrO2 （ =0, 0.02, 0.05, 0.1） was compounded by the method of hightemperature solid phase. The characterization was done through the electrochemical methods of X-ray diffraction（XRD）, scanning electron microscope （SEM）, fourier infrared absorption spectrum （FTIR） and so on. Experimentalresults show that the increasing of Zr contents make material of the crystal cell parameters have great changes. Theproduce of the Mn3＋of the formation of Li1.2Ni0.13Co0.13Mn0.54O2 at high temperature was inhibited by Zr doping. It didfavor to the the reversible remove of li-ion. The particle size distribution of the synthesized lithium rich material wasuniform, and the crystalline was better. In addition, the electrical properties testing results show that Li-rich materialLi1.2Ni0.13Co0.13Mn0.49Zr0.05O2 has better performance, devolving electricity specific capacity of 366 mAh/g at ratio 0.1 ,discharge specific capacity remains ata rate of 96% after cycling 100 times.

关 键 词：锂离子电池 Li1.2Ni0.13Co0.13Mn0.54-xZrxO2 Zr掺杂 电特性 

分 类 号：TM912[电气工程—电力电子与电力传动]