Abstract Scope |
Ni-rich layered oxides, such as LiNi0.8Co0.1Mn0.1O2 (NCM811), have been widely studied because of their higher energy density. However, the gradual transformation of the structure during the cycle will cause the capacity of the cathode material to decrease and the potential to decay. In this paper, first principles calculation method is used to dope NCM811 with Sb, Si, and Ca ions to improve the electrochemical performance of NCM811. Calculation and analysis show that the doping of Sb, Si, and Ca has an effective effect on reducing Ni oxidation and reducing oxygen loss. |