▎ 摘　　要

NOVELTY - Producing graphene oxide reduced product-silicon metal particle composite, comprises (a) producing graphene oxide reduction product through cation-pi interaction, (b) coating polymer on silicon metal particles, and preparing a complex dispersion solution by first complexing with the graphene oxide reducing material and second complexing with the silicon metal particles after coating the polymer on the graphene oxide reducing material, and (c) spray-drying the composite dispersion solution to produce a core-shell composite powder. USE - The graphene oxide reduced product-silicon metal particle composite is useful in cathode for secondary battery (claimed). ADVANTAGE - The composite improves bondability between the graphene oxide reduction product and silicon metal particles, provides uniform graphene application, and maintains high capacity and stable cycle characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for cathode comprising current collector and cathode active material formed on one surface of the current collector and having a graphene oxide reduced material-silicon metal particle composite added with a polymer, where the graphene oxide reduction material is a core-shell structured composite powder made of an outer shell structure surrounding the silicon metal particles.