Li-rich compounds xLi2MnO3·(1-x)LiMO2(M=Ni1/3Co1/3Mn1/3, Al, Ti) are currently receiving worldwide attention because of their lower cost and higher capacity for use as cathodes in lithium ion batteries. Among the compounds, lithium nickel oxide has an influence on electrochemical deteriorations and structural unstabilities such a remarkably fading capacity and the evolution of oxygen caused by initial reduction of Ni3+ to Ni2+ after storage in air for a time. In this study, by using ab initio calculation, we demonstrate how the ionexchanging method can be used to predict the electrochemical properties indicating the structural stability with respect to the bonding strength between nickel and oxygen atoms. Results of substitution show that Ti(among TMs(transition metals)) and Al(among non-TMs) are very promising candidates to improve the material’s properties. This method could have promising expectations and be useful in order to suppress negative characteristics of the Li-rich compounds.