▎ 摘　　要

NOVELTY - Pre-lithiation additive comprises fluorine-doped lithium-iron oxide (Li5FeO4) with surface coated with lithium cobalt oxide (LiCoO2). USE - Pre-lithiation additive for a lithium ion battery anode material (Claimed). ADVANTAGE - The lithium ion battery anode material of pre-lithiation additive is doped with fluorine element, at the same time, the surface is coated with cobalt oxide, which can stabilize the structure of the material Li5FeO4, it slows down the reaction with the air, meanwhile, cobalt oxide is layered structure, lithium ion in Li5FeO4 can be freely removed, when the pre-lithiation additive is inactivated for the first time, the lithium oxide still has activity and it does not block the transmission of lithium ion in the active material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a preparation method of a pre-lithiation additive for lithium ion battery cathode material, which involves mixing the iron source, lithium source, fluorine source, complexing agent and deionized water, stir the reaction to obtain the sol, continue the stirring reaction, drying and grinding to obtain the precursor powder, calcining and cooling to obtain fluorine (F) doping Li5FeO4, and mixing F doped Li5FeO4 with nano-scale cobalt oxide (Co3O4) and a lithium source, and calcining to obtain a pre-lithiation additive of F doped Li5FeO4 coated with lithium cobalt oxide (LiCoO2); and (2) a method for using pre-lithiation additive for anode material of lithium ion battery, which involves preparing slurry by mixing the pre-lithiation additive, the positive electrode material, the conductive agent and the binder, coating the slurry on the current collector, and the pre-lithiation lithium is prepared by drying, rolling and drying, then obtained desired products.