▎ 摘　　要

NOVELTY - A hexagonal phase cobalt-nickel alloy nano-cluster-graphene composite material preparing method involves adding cobalt acetylacetonate, nickel acetylacetonate, graphite oxide and octadecyl amine and dispersing to obtain mixture. The mixture is heated in an inert protective gas atmosphere. The temperature is raised to 230-245 degrees C, preferably 245 degrees C and maintained for 1.5-2.05 hours, preferably 2 hours. The resultant mixture is added with organic solvent and quenched to separate reaction product, The reaction product is optionally washed and dried to obtain finished product. USE - Method for preparing hexagonal phase cobalt-nickel alloy nano-cluster-graphene composite material that is utilized for absorbing electromagnetic wave (claimed). ADVANTAGE - The method enables preparing the composite material with better reduction effect of thermal decomposition in a simple, rapid and inexpensive manner. DETAILED DESCRIPTION - A hexagonal phase cobalt-nickel alloy nano-cluster-graphene composite material preparing method involves adding cobalt acetylacetonate, nickel acetylacetonate, graphite oxide and octadecyl amine and dispersing to obtain mixture. The mixture is heated to 110-140 degrees C, preferably 120 degrees C in an inert protective gas atmosphere for 20-40 minutes, preferably 30 minutes. The temperature is raised to 230-245 degrees C, preferably 245 degrees C and maintained for 1.5-2.05 hours, preferably 2 hours. The resultant mixture is added with organic solvent and quenched to separate reaction product. The reaction product is optionally washed and dried to obtain finished product.