采用共沉淀—高温固相烧结的方法合成了富镍正极材料LiNi_0.6Co_0.2Mn_0.2O₂(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%.

Nickel-rich cathode materials LiNi_0.6Co_0.2Mn_0.2O₂（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.