▎ 摘　　要

NOVELTY - A first mixed solution is prepared by introducing inorganic particles into a surface treatment solution containing a coupling agent, and is agitated. The first mixed solution is filtered and mixture is dried to obtain inorganic particles having a functional group bound to surface. The surface-treated inorganic particle is injected into a solution containing non-oxidized graphene to obtain a second mixed solution, and second mixed solution is stirred. The non-oxidized graphene has an ID/IG value of 0.16-0.23 or less, which is ratio of D peak intensity (ID) to G peak intensity (IG) in Raman spectrum measurement result, and oxygen content is 0.001-1 at.% or less. The coupling agent is 3-aminopropyl triethoxy silane (APTES), 3-glycidoxypropyl trimethoxysilane, Triton X-100 (RTM: Nonionic surfactant) (2-(4-(2,4,4-trimethylpentan-2-yl)phenoxy) ethanol) and/or polyvinyl acetate (PVA). The surface treatment solution includes solvent, i.e. deionized water, ethanol and/or acetic acid. USE - The method is useful for producing graphene-coated inorganic particles. ADVANTAGE - The graphene-coated inorganic particles exhibit excellent thermal conductivity by minimizing structural defects and damage to inorganic particles during graphene coating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-coated inorganic particles manufactured by above method.