▎ 摘　　要

NOVELTY - Composite material comprises graphene. The layered structure of the graphene is inserted with metal nano-particles coated by carbon shell. USE - Used as composite material. ADVANTAGE - The material has improved electromagnetic absorption performance by enhancing the multi-reflection loss and magnetic loss and multiple reflection loss/polarizability relaxation loss. The method of preparing the composite material is simple and fast preparation method, without special instrument device, using metal to dissolve the carbon in the quenching heating process, etching, graphene porous graphene, the process destroys the large conjugated structure of the graphene. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the composite material (Drawing includes non-English language text).