▎ 摘　　要

NOVELTY - The preparation method involves mixing the solvent and the template by ball milling to obtain the template solution, mixing the template solution, acrylonitrile-polymer monomer, and metal catalyst by ball milling, dispersing each substance uniformly, adding initiator to obtain a mixture of precursor and template after drying, calcining mixture at 200-300?oC for 1-3 hours, introducing an inert gas, increasing the temperature to 850-950?oC, maintaining the temperature for 1-2 hours, removing the template to obtaing the graphene-based metal composite material after washing and drying. USE - Preparation method of graphene-based metal composite material used as electromagnetic wave absorbing material (all claimed) used in mechanical processing, and new energy materials to absorb electromagnetic waves. ADVANTAGE - The graphene-based metal composite material has very good wave-absorbing performance. The method has low cost, and is easy to scale production. The prepared product can be widely applied to composite material, mechanical processing, new energy material field, for absorbing electromagnetic wave. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) an application of the graphene-based metal composite material as an electromagnetic wave absorbing material; and (2) a graphene-based metal composite material. DESCRIPTION OF DRAWING(S) - The drawing shows the electromagnetic parameters of the magnetic graphene-based metal composite material.