▎ 摘　　要

NOVELTY - A cathode active material comprises spherical artificial graphite and non-graphitized carbon. The spherical artificial graphite is core-shell structure, and comprises core and shell layer. The core is mixture of graphite primary particles and conductive carbon black. The shell layer is graphene layer. The value of alignment I(004)/I(110) of spherical artificial graphite is 0.5-3.0. USE - Cathode active material. ADVANTAGE - The battery has large-rate charging ability and low temperature rise, and improves safety performance and cycle performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) composite cathode pole piece comprising 2-5% conductive agent, 1-5% binder and 92-96% cathode active material; (2) preparation of the composite cathode pole piece comprising dissolving conductive agent, binder and cathode active material in solvent, vacuumizing and stirring to obtain cathode slurry with uniform bubble-free, and uniformly coating cathode slurry on copper foil; and (3) fast-charging type lithium ion battery comprising electrolyte, anode pole piece and composite cathode pole piece.