▎ 摘　　要

NOVELTY - The method involves providing (S10) one of a solid organic carbon source, a liquid organic carbon source and a gaseous organic carbon source to form a carbon source mixture. The carbon source mixture is heated (S11) to crack into gaseous active carbon-containing radicals. The gaseous active carbon-containing group is introduced (S12) into a reaction cavity, a metal substrate is placed in the reaction cavity, and the gaseous active carbon-containing group is deposited on the metal substrate at a growth temperature and a growth pressure to form a graphene layer to form a graphene metal composite structure. The solid organic carbon source is selected from glucose, polycyclic aromatic hydrocarbon, poly (methyl methacrylate), polyethylene glycol, paraffin and stearic acid. The liquid organic carbon source is selected from methanol, ethanol, anisole, benzene and chlorobenzene. The gaseous organic carbon source is selected from methane, ethane, ethene and ethyne. USE - Method for preparing graphene with multiphase composite carbon source on metal surface. ADVANTAGE - The method adopts a solid-liquid-gas multiphase carbon source mixture, subjects the multiphase carbon source mixture to pyrolysis before entering a reaction cavity to form gaseous active carbon-containing groups, and deposits the gaseous active carbon-containing groups on the surface of the metal substrate to form a graphene metal composite structure. The carbon source is cracked at high temperature, so that the metal substrate is not required to catalyze the carbon source, the optional range of the metal substrate material is expanded, and the metal substrate is a material with a catalytic effect on the carbon source and also be a material without a catalytic effect on the carbon source. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a graphene composite structure with a multiphase composite carbon source on a metal surface; and (2) a device for preparing graphene with the multiphase composite carbon source on the metal surface. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating a method for preparing graphene with multiphase composite carbon source on metal surface. (Drawing includes non-English language text) Step for providing one of a solid organic carbon source, a liquid organic carbon source and a gaseous organic carbon source to form a carbon source mixture (S10) Step for heating the carbon source mixture to crack into gaseous active carbon-containing radicals (S11) Step for introducing the gaseous active carbon-containing group into a reaction cavity, placing a metal substrate in the reaction cavity, and depositing the gaseous active carbon-containing group on the metal substrate at a growth temperature and a growth pressure to form a graphene layer to form a graphene metal composite structure (S12)