Abstact:LiNi0.8Co0.1Mn0.1O2is considered to be a promising cathode material which possesses the merit of LiCoO2、LiNiO2、LiMnO2and owns high capacity. However, a few drawbacks such as the cycling performance and storage performance in air are need to overcome, otherwise, the wide application of LiNi0.8Co0.1Mn0.1O2is limited. Therefore, we coat an electrochemical active or inactive material layer to improve the electrochemical performance of the material. We mainly discuss the effect of the Ni-poorer layred co...