▎ 摘　　要

NOVELTY - Preparing graphene composite material comprises (i) preparing graphene oxide using natural graphite powder as raw material; (ii) dispersing graphene oxide in water, to obtain an aqueous dispersion of graphene oxide, adding acrylonitrile monomer and azobisisobutyronitrile, mixing uniformly under nitrogen in a water bath, carrying out polymerization reaction and vacuum drying; and (iii) uniformly mixing step (ii) product and elemental sulfur mixed in a quartz tube, heating to 250-350 degrees C under flowing inert gas atmosphere for 1-10 hours, to obtain the final product. USE - The method is useful for preparing graphene composite material (claimed). ADVANTAGE - The method enhances electron conductivity, circulation stability; and has notable improving performance.