▎ 摘　　要

NOVELTY - The preparing method involves preparing graphene using existing Hummers method, placing graphene oxide in de-ionized water for ultrasonic treatment to obtain graphene suspension, stirring sodium hydroxide into de-ionized water until solution is clear and cooling to room temperature, dissolving copper salt and nickel salt in de-ionized water to obtain alkaline solution, adding ethylene diamine in alkaline solution, adding solution to obtain graphene suspension, and obtaining graphene/copper-nickel nanometer composite material by reaction of graphene solution with de-ionized water. USE - Preparing method for graphene/copper-nickel one-dimensional nano-composite material. Attains fast, energy-saving, simple operation, thus reducing production cost and obtaining good dispersion function. Operation is convenient, environment friendly, and easy for large-scale production. ADVANTAGE - Reduces copper ion and nickel ion, and attains excellent electromagnetic wave absorption performance. DESCRIPTION OF DRAWING(S) - The drawing shows a pictorial diagram of prepared graphene/copper-nickel nano-composite material taken by scanning electronic microscope (SEM).