▎ 摘　　要

NOVELTY - A metal-graphene composite material comprises a core and a shell wrapped in an outer core, where composite nanoparticle is present in a shell surface, the core is made of micron-sized metal powder including copper powder, nickel powder, zinc powder, silver powder and/or tin powder, the shell is made of thin graphite and the nanoparticles are nano copper powder, nano nickel powder, nano-zinc powder, silver and/or nano tin powder. USE - Metal-graphene composite material for use as functional material (claimed). ADVANTAGE - The metal/graphene composite as functional material has good electrical conductivity and high bond strength, 85% pure copper material and a tensile strength of 500 MPa or more. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing a metal/graphite composite material, which involves mixing a metal powder and graphite micron surface treated olefinic feedstock, annealing to obtain wrapped metal powder graphite olefinic feedstock, mixing wrapped metal powder graphite olefinic feedstock with a reducing agent in a metal salt solution, carrying out oxidation-reduction to obtain a metal/graphite composite material (2) a functional material obtained by sintering copper powder with metal/graphite composite material, where the weight ratio of the metal/graphene composite material and copper is 1:(1-100).