▎ 摘　　要

NOVELTY - Preparing gradient ternary anode material, comprises (i) mixing nickel source and manganese source with solvent to obtain solution A, mixing cobalt source and solvent to obtain solution B, adding solution A, aqueous sodium hydroxide and aqueous ammonia into bottom liquid for reacting, replacing solution A with solution B after the particle D50 reaches 5-8 μm, and continuing to reacting to obtain cobalt-coated nickel-manganese binary precursor, and (ii) mixing the cobalt-coated nickel-manganese binary precursor and lithium source for sintering to obtain core material, using liquid organic matter as carbon source, and performing atomic layer deposition to coating graphene on the surface of the core material to obtain final product. USE - The gradient ternary anode material is useful in anode pole piece for lithium ion battery (all claimed). ADVANTAGE - The gradient ternary anode material: has gradually increased cobalt metal concentration from inside to outside and thus improving the rate performance and structural stability of the material; and realizes maximum rate performance and cycle performance through single-layer graphene coating. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: gradient ternary anode material prepared by above method; anode pole piece; and lithium ion battery.