▎ 摘　　要

NOVELTY - Anode active material comprises secondary particles formed by primary particle accumulation, and coating layer covered on the surfaces of the primary particles and the secondary particles. The primary particles is lithium-nickel-cobalt-manganese oxide (I). The coating layer is lithium cobaltate, lithium aluminate, lithium manganate, fluorine-doped lithium cobaltate, fluorine-doped lithium aluminate and/or fluorine-doped lithium manganate. (I) is prepared by reacting lithium-nickel-cobalt-manganese hydroxide ternary precursor and lithium salt in mass ratio of 1:1-1.5. USE - The anode active material is useful in anode for ternary lithium ion battery (all claimed). ADVANTAGE - The anode active material: ensures ternary lithium ion battery has long service life and better safety performance. DETAILED DESCRIPTION - Anode active material comprises secondary particles formed by primary particle accumulation, and coating layer covered on the surfaces of the primary particles and the secondary particles. The primary particles is lithium-nickel-cobalt-manganese oxide of formula (LiNi1-x-yCoxMnyO2) (I). The coating layer is lithium cobaltate, lithium aluminate, lithium manganate, fluorine-doped lithium cobaltate, fluorine-doped lithium aluminate and/or fluorine-doped lithium manganate. (I) is prepared by reacting lithium-nickel-cobalt-manganese hydroxide (Ni1-x-yCoxMny(OH)2) ternary precursor and lithium salt in mass ratio of 1:1-1.5. x, y = 0-0.4; and 1-x-y = greater than or equal to 0.6. INDEPENDENT CLAIMS are also included for: (1) preparation of the anode active material; and (2) anode, comprising conductive agent, a binder, and the anode active material.