LITHIUM-MANGANESE-RICH MATERIAL, PREPARATION METHOD FOR SAME, AND APPLICATIONS THEREOF

The present disclosure relates to the technical field of lithium ion battery, and discloses a Lithium-Manganese-rich material and a preparation method and a use thereof, the material comprises a substrate and a coating layer coated on a surface of the substrate, the substrate comprises a substance represented by a chemical formula Li[(MnaCobNicM)M'd]O, the coating layer comprises a substance represented by a chemical formula Nau[Liν(MnaCobNicM)M'ν-γ] O, and the coating layer in the Lithium-Manganese-rich material has a thickness of 10-100nm. The Lithium-Manganese-rich material provided by the present disclosure has high initial coulombic efficiency, excellent cycle stability, high discharge specific capacity and desirable rate capability.