▎ 摘　　要

NOVELTY - A magnetic nanomaterial graphene complex comprises c-nickel/graphene. USE - Magnetic nano-material graphene complex useful as electromagnetic wave absorbing material. ADVANTAGE - The graphene complex can be prepared using simple and fast method, and raw materials that can be easily obtained; and has good electromagnetic wave absorbing property and low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of nanomaterial-graphene complex comprising: (A) dissolving the graphene oxide into 2-pyrrolidone or N-methyl pyrrolidone to obtain brown solution; (B) adding acetylacetone nickel and octadecylamine into the brown solution, heating at 110-140 degrees C for 20-40 minutes under the protection of nitrogen gas, heating at 202 degrees C and maintaining for 1.5-2.5 hours; (C) adding organic solvent to sudden stop the reaction and make the temperature of the reaction system fast reduce to the room temperature; and (D) separating the reaction product, washing, and drying to obtain c-nickel/graphene.