人工晶体学报2018，Vol.47Issue(3)：629-634,6.
Co掺杂对富锂锰基正极材料Li1.2Ni0.2Mn0.6O2电化学性能的影响
Effect of Co Doping on the Electrochemical Properties of Li1.2Ni0.2Mn0.6O2 Rich Lithium Manganese Based Cathode Materials
摘要
Abstract
The paper highlights the method of synthesizing cathode Li1.2Ni0.2Mn0.6O2 materials by sol-gel method with acetates as raw material,and discuss the effect of doping Co on the structure and electrochemical of Li1.2 Ni0.2-x/2 Mn0.6-x/2 Cox O2 (x =0,0.01,0.02,0.05) materials.The results of XRD and SEM test show that the structure samples didnt change after Co-doping,and it belong to the lithiumrich manganese based cathode material.The results of electrochemical test shows that Co-doping can improve the rate performance of materials and discharge capacity.It turns that the material with x =0.02 shows the best electrochemical performance,and the first discharge specific capacity increases 115.6 mAh · g-1(from 217 mAh · g-1 to 332.6 mAh · g-1) at the rate of 0.05 C.The discharge capacity is 171.6 mAh · g-1 under 40 cycles and the capacity retention rate of 85.5％ at the rate of 0.1 C.关键词
锂离子电池/富锂锰基/正极材料/改性Key words
Lithium ion battery/Rich Lithium manganese base/cathode material/Modified分类
信息技术与安全科学引用本文复制引用
杨陈,向延鸿,章顺坤,龙博,陈经玲,唐淑敏,唐欢,廖启军,田林..Co掺杂对富锂锰基正极材料Li1.2Ni0.2Mn0.6O2电化学性能的影响[J].人工晶体学报,2018,47(3):629-634,6.基金项目
国家自然科学基金(51662010,51364009,51262008,51472107,51672104) （51662010,51364009,51262008,51472107,51672104）
湖南省自然科学基金(2016JJ6121) （2016JJ6121）
湖南省教育厅优秀青年项目(16B209,15B190) （16B209,15B190）
吉首大学大学生研究性学习与创新实验计划 （）
吉首大学校级理工科研究项目(Jdx16008,Jdx16009) （Jdx16008,Jdx16009）
