电化学2018，Vol.24Issue(1)：56-62,7.DOI:10.13208/j.electrochem.170317
高首效富镍正极材料LiNi0.6Co0.2Mn0.2O2的合成及电化学性能研究
Synthesis and Electrochemical Properties of Nickel-Rich Cathode Material LiNi0.6Co0.2Mn0.2O2 with High Initial Coulombic Efficiency
摘要
Abstract
Nickel-rich cathode materials LiNi0.6Co0.2Mn0.2O2(NCM622)were synthesized by a co-precipitation-solid state sintering method at different temperatures.The structure,morphology and electrochemical performance of the as-prepared materials were investigated by X-ray powder diffraction (XRD)/Rietveld refinement,scanning electron microscope (SEM) and electrochemical experiments.It is found that NCM622 calcined at 800 ℃ showed the lowest degree of cation disorder (～ 1.97％) with a high initial Coulombic effiency of 92.2％ and capacity retention of 81.4％ after 100 cycles.关键词
锂离子电池/正极材料/LiNi0.6Co0.2Mn0.2O2/首周库仑效率Key words
lithium-ion battery/cathode material/LiNi0.6Co0.2Mn0.2O2/initial Coulombic efficiency分类
化学化工引用本文复制引用
关小云,洪朝钰,朱建平,王伟立,李益孝,杨勇..高首效富镍正极材料LiNi0.6Co0.2Mn0.2O2的合成及电化学性能研究[J].电化学,2018,24(1):56-62,7.基金项目
国家自然科学基金项目(No.21233004,No.21428303)资助 （No.21233004,No.21428303）
