To improve the performance of this NCM811 material, Al 2O 3, ZrO 2, and LBO (Li 2O-2B 2O 3) are, respectively, used to coat it by a wet chemical method. By mixing this material with LiOH in proportion and sintering twice under 500 and 800☌, respectively, the cathode material of LiN i0.8Co 0.1Mn 0.1O 2 (NCM811) for lithium ion batteries (LIBs) is synthesized. In this paper, the precursor Ni 0.8Co 0.1Mn 0.1(OH) 2 is prepared by a co-precipitation method. 2Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai, China.1Department of Physics, College of Sciences, Shanghai University, Shanghai, China.Hailin Zhang 1 Jiaqiang Xu 2 Jiujun Zhang 2 *