Suppressing Interfacial Structure Failure of Ni-Rich Cathode Materials Under High Work Voltage Towards Improved Cycling Stability Enabled Via Li2mno3 Based Surface Construction

In the present study, an ammonia complexation-oxidation-homogeneous precipitation-assisted high-temperature solid phase approach was used to constructing evenly connected Li2MnO3 surface on LiNi0.8Co0.1Mn0.09Al0.01O2 (NCMA) cathode materials. The structural stability of NCMA and the cycling performance at high cut-off voltages were greatly improved by the advantages of the high voltage (below 4.5 V) stability of Li2MnO3-based surface. 5