▎ 摘　　要

NOVELTY - Preparation of cobalt-based composite material involves (s1) performing discharge plasma sintering treatment to cobalt antimonide and graphitized carbon mixed powder, and ball-milling to obtain alloy precursor material, and (s2) taking the alloy precursor material as substrate, depositing non-metal semiconductor material layer on the substrate by atomic vapor deposition method. USE - Preparation of cobalt-based composite material used in lithium battery negative electrode material (all claimed). ADVANTAGE - The cobalt-based composite material can effectively improve the battery capacity and improve the battery circulation performance.