▎ 摘　　要

NOVELTY - Preparing a high thermal conductivity complex material based on graphitized polydopamine coated metal particles comprises dispersing the polydopamine-coated metal nanoparticles and graphene uniformly in a solvent, filtering or settling by suction in order to make polydopamine-coated metal nanoparticles and graphene form a complex film, and performing heat treatment, carbonizing polydopamine, thermally melting the metal nanoparticles are, and connecting the graphene sheet structure in the thickness direction. USE - The metal nanoparticles is useful in increasing the thermal conductivity of graphene-based complex in the thickness direction (claimed). ADVANTAGE - The method: utilizes the high thermal conductivity of metal and graphitized polydopamine to build efficient thermal conduction channels between graphene layers; efficiently improves high thermal performance in the thickness direction of the material; overcomes shortcoming of poor thermal conductivity in the thickness direction; and provides a high-performance thermal conductive material.