▎ 摘　　要

NOVELTY - Preparing carbon-coated nickel manganese binary cobalt-free anode material, comprising: subjecting the ion exchange matrix, graphene and solvent for solvothermal reaction; where the ion exchange matrix uses formula of MOn and/or M(OH)n to obtain solution containing hydroxide/graphene composite material; Ksp of the hydroxide is (1x10-40 10-40) to (1x10-11), where M is group IIA, group IIIA, group IVA, group IIIB, group IVB, group VIB, group VIIB or group VIII, n is 2-4; performing ion exchange to the nickel manganese binary cobalt-free anode material and the M element in the solution containing hydroxide/graphene composite material to obtain the carbon-coated nickel manganese binary cobalt-free anode material. USE - The method is useful for preparing carbon-coated nickel manganese binary cobalt-free anode material. ADVANTAGE - The method can form a compact and stable carbon coating layer on the surface of the nickel-manganese binary cobalt-free anode material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) carbon-coated nickel manganese binary cobalt-free anode material, prepared by the preparation method of carbon-coated ternary anode material; and the chemical formula of the carbon-coated nickel cobalt manganese ternary anode material is LiNixMn1-xO2-C, where x is 0.60-0.90; and (2) a lithium ion battery, comprising a positive electrode, a negative electrode, a membrane set between the positive electrode and the negative electrode, and electrolyte, where the positive electrode comprises the carbon-coated nickel manganese binary cobalt-free positive electrode material.