▎ 摘　　要

NOVELTY - Preparing magnetic graphene nano-wave absorbing material comprises (i) dissolving the graphene oxide sponge, acidified carbon nano tube and cobalt nitrate in deionized water, mechanically stirring to uniform, then performing electrostatic self-assembly reaction under ultrasonic to form a one-dimensional nano-coil and quickly freezing, (ii) freezing and drying, and (iii) carrying out heat treatment, under the protection of inert gas. USE - The magnetic graphene nano-wave absorbing material is useful in civil and military fields, core-shell, eggshell and one-dimensional tubular special structure. ADVANTAGE - The method: inhibits the agglomeration of magnetic nano particles; realizes uniform dispersion of magnetic particles; improves impedance matching degree of material, interface polarization capability and electromagnetic wave absorption performance of composite material; increases the heterogeneous interface; and develops synergistic advantages of magnetic material and graphene material.