Single crystal primary LiNi_0.6Mn_0.2Co_0.2O₂ cathode materials were successfully synthesized via a developed ball milled route and followed by a proper reheating process. The influences of ball milling and reheating processes on the structure and electrochemical properties of LiNi_0.6Mn_0.2Co_0.2O₂ cathode material were investigated by X-Ray diffraction, scanning electron microscope, high resolution transmission electron microscopy, selected area electron diffraction, cyclic voltammetry, electrochemical impedance spectroscopy and electrochemial tests. The results showed that the reheating process was the key to obtain fine single crystal particles with excellent electrochemical properties. The single crystal primary LiNi_0.6Mn_0.2Co_0.2O₂ exhibited a discharge capacity of 179.7 mAh g⁻¹ at 1.0C, and sightly decreased to 173.4 mAh g⁻¹ after 50 cycles, with the excellent capacity retention of 96.5%. The low increases of resistance and high lithium ions diffusion coefficient all illustrated the single crystal particles had good lithium ion kinetic properties.

通过改进的球磨工艺成功地合成了单晶LiNi _0.6 Mn _0.2 Co _0.2 O ₂单晶阴极材料，然后进行了适当的再加热工艺。球磨和加热工艺对LiNi _0.6 Mn _0.2 Co _0.2 O ₂的结构和电化学性能的影响通过X射线衍射，扫描电子显微镜，高分辨率透射电子显微镜，选定区域电子衍射，循环伏安法，电化学阻抗谱和电化学测试研究了正极材料。结果表明，再加热工艺是获得具有优良电化学性能的细单晶颗粒的关键。单晶一次LiNi _0.6 Mn _0.2 Co _0.2 O ₂在1.0C时的放电容量为179.7 mAh g ^{- 1}，并且明显下降至173.4 mAh g ^{- 1}50次循环后，具有96.5％的出色容量保持率。电阻的低增加和高锂离子扩散系数都说明单晶颗粒具有良好的锂离子动力学性质。