▎ 摘　　要

NOVELTY - Method for preparing a graphene-doped lithium manganate anode material, involves adding lithium carbonate and manganese(II, III) oxide to deionized water, where the molar ratio of the lithium and manganese is (1-1.2):2, and uniformly grinding to obtain a anode material precursor slurry, (B) spray-drying the anode material precursor slurry to obtain a anode material precursor, (C) preheating the anode material precursor in an air atmosphere, and calcining to obtain a lithium manganate anode material, (D) adding the lithium manganate anode material and a liquid polyacrylonitrile oligomer to deionized water, stirring, and spray-drying to obtain a graphene-doped lithium manganate anode material precursor, and (E) pre-oxidizing the graphene-doped lithium manganate anode material precursor in an air atmosphere, and performing a high-temperature calcination treatment to obtain the anode material. USE - The method is useful for preparing a graphene-doped lithium manganate anode material (claimed). ADVANTAGE - The method adopts economical and readily available raw materials, and adopts doping of graphene, which effectively controls the growth of crystal grains that are arranged orderly and densely, hence the structural stability of the electrode material is maintained. The excellent electrical conductivity of graphene accelerates the electron migration rate of the material, effectively improves the electrical conductivity of the electrode material, and enables the material to have excellent cycle stability under large-rate charge and discharge conditions.