%0 Journal Article
%T 高首效富镍正极材料LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub>的合成及电化学性能研究<br>Synthesis and Electrochemical Properties of Nickel-Rich Cathode Material LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> with High Initial Coulombic Efficiency
%A 关小云
%A 洪朝钰
%A 朱建平
%A 王伟立
%A 李益孝
%A 杨勇&lt
%A br&gt
%A GUAN Xiao-yun
%A HONG Chao-yu
%A ZHU Jian-ping
%A WANG Wei-li
%A LI Yi-xiao
%A YANG Yong
%J 电化学
%D 2018
%R 10.13208/j.electrochem.170317
%X 摘要 采用共沉淀—高温固相烧结的方法合成了富镍正极材料LiNi0.6Co0.2Mn0.2O2(简称NCM622)，通过X射线粉末衍射（XRD）/Rietveld精修法、扫描电子显微镜（SEM）及电化学测试，对不同温度下合成材料的结构、形貌、电化学性能进行表征. 结果表明，800℃下，NCM622阳离子混排程度最低(~1.97%)，首圈库伦效率高达92.2%，100圈容量保持率为81.4%.<br>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 the capacity retention of 81.4% after 100 cycles
%K 锂离子电池
%K 正极材料
%K LiNi&lt
%K sub&gt
%K 0.6&lt
%K /sub&gt
%K Co&lt
%K sub&gt
%K 0.2&lt
%K /sub&gt
%K Mn&lt
%K sub&gt
%K 0.2&lt
%K /sub&gt
%K O&lt
%K sub&gt
%K 2&lt
%K /sub&gt
%K 
%K 首周库仑效率
%K &lt
%K br&gt
%K ？lithium-ion battery
%K cathode material
%K ？LiNi&lt
%K sub&gt
%K 0.6&lt
%K /sub&gt
%K Co&lt
%K sub&gt
%K 0.2&lt
%K /sub&gt
%K Mn&lt
%K sub&gt
%K 0.2&lt
%K /sub&gt
%K O&lt
%K sub&gt
%K 2&lt
%K /sub&gt
%K initial Coulombic efficiency
%U http://electrochem.xmu.edu.cn/CN/abstract/abstract10377.shtml