Abstract:Cathode material Li1.2Mn0.54Co0.13Ni0.13O2 because of its high discharge capacity, good security and stability and environmental protection, etc, can well meet the new energy electric vehicles and small electronic products Requirements, received great attention and extensive research. Based on the brief introduction to the structural characteristics and defects of Li1.2Mn0.54Co0.13Ni0.13O2 materials, the characteristics and main modification methods of different preparation methods of the material are introduced, and their effects on electrochemical performance are expounded respectively. Finally, according to the research status and application prospect of Li1.2Mn0.54Co0.13Ni0.13O2 materials at home and abroad, it is pointed out that nano-electrode preparation, multicomponent structure preparation, compound treatment modification, composite preparation and composite method preparation are the main future development direction of this material.