电源技术2018，Vol.42Issue(2)：180-182,204,4.
Mg2+掺杂对富锂锰基正极材料性能影响
Effect of Mg2+ doping on performance of Li-rich cathode material
摘要
Abstract
Li-rich cathode material Li[Li0.2Ni0.13Co0.13Mn0.54]O2 was prepared by high temperature solid state method.The crystal structure,morphology characteristics,particle size and electrochemical properties of the materials were studied by using X-ray diffractometry,scanning electron microscopy,laser diffraction particle size analyzer,charge-discharge measurements,cyclic voltammetry and electrochemical impedance spectroscopy.After Mg2+ doping modification,Li-rich cathode material has more stable crystal structure,more smooth particle surface and better electrochemical performance,and Li [Li0.2Ni0.13Co0.13Mn0.54]1-xMgxO2 (x=0.07) has higher crystallization degree,higher charge and discharge specific capacity and better cycle stability.With the increase of Mg2+doping amount,the Rs resistance decreases,demonstrating that Mg2+ doping Li [Li0.2Ni0.13Co0.13Mn0.54]O2 show the ability to decrease AC impedance and promote circuit charge to move to make the charge and discharge specific capacity increase and conductive performance stronger.关键词
Mg2+掺杂/Li[Li0.2Ni0.13Co0.13Mn0.54]O2/电化学性能Key words
Mg2+ doping/Li[Li0.2Ni0.13Co0.13Mn0.54]O2/electrochemical performance分类
信息技术与安全科学引用本文复制引用
吴汉杰,梁兴华..Mg2+掺杂对富锂锰基正极材料性能影响[J].电源技术,2018,42(2):180-182,204,4.基金项目
广西汽车零部件与整车技术重点实验室开放课题(2015KFZD02) （2015KFZD02）
广西科技大学研究生教育创新计划项目(GKYC201617) （GKYC201617）
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) （15-A-03-01）
广西科技大学研究生教育创新计划项目(YCSW2017200) （YCSW2017200）
广东省科学院实施创新驱动发展能力建设专项资金项目(2017GDAS CX-0202) （2017GDAS CX-0202）
