Surface Modification of Li(Ni0.6Co0.2Mn0.2)O2 Cathode Materials by Nano-Al2O3 to Improve Electrochemical Performance in Lithium-Ion Batteries通过Nano-Al2O3对Li(Ni0.6Co0.2Mn0.2)O2正极材料进行表面改性以改善锂离子电池中的电化学性能MATERIALSIF3.22017-11-0630OAAI