▎ 摘　　要

NOVELTY - Regeneration method of graphite cathode of retirement lithium comprises (i) pickling the graphite cathode of the decommissioned lithium battery to remove metal impurities and enriching the surface with oxygen-containing functional groups; (ii) dispersing acid-washed graphite and the highly conductive graphene of amination in deionized water and obtaining graphene-coated graphite through suction filtration and drying; (iii) dissolving pitch in an organic solvent, and adding graphene-coated graphite into the resulting solution and mixing uniformly, removing organic solvent and carbonizing solid product so that the pitch carbonization is coated on the outer surface of the graphene to obtain a modified regenerated graphite cathode. The organic solvent comprises tetrahydrofuran, toluene or petroleum ether. USE - The cathode is useful as the lithium ion battery cathode (claimed). ADVANTAGE - The method introduces the graphene into the retirement lithium the battery graphite cathode modified and modified to obviously improve the discharge capacity of the obtained modified graphene graphite material cathode the first ring/second coulomb efficiency and cycle performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a modified regenerated graphite cathode.