▎ 摘　　要

NOVELTY - Graphene/copper composite material is prepared by adding copper sulfate pentahydrate, nickel sulfate, citric acid, and boric acid to deionized water, stirring at room temperature, heating in water bath while magnetically stirring, adding graphene oxide solution, mixing to obtain mixed solution, adding sodium hypophosphite solution, mixing to accelerate reaction, performing ultrasonic dispersion treatment, repeatedly filtering with microporous filtration membrane, washing with deionized water a number of times until pH is neutral, vacuum drying, and reducing under reducing atmosphere. USE - Preparation of graphene/copper composite material (claimed). ADVANTAGE - Graphene/copper composite material has stable dispersibility, and preparation is low-cost and easy to operate, has mild reaction conditions and high reduction degree and product quality, and uses non-toxic reducing agent and simple device. DESCRIPTION OF DRAWING(S) - The drawing shows a transmission electron microscope image of graphene/copper composite material.