▎ 摘　　要

NOVELTY - Formation of cyanide-free silver and graphene composite coating on substrate comprises chemically degreasing and polishing substrate, soaking in silver, and washing with deionized water; dissolving sodium thiosulfate, potassium metabisulfite and silver nitrate in water, adding sodium metabisulfite and silver nitrate, adding graphene powder and ultrasonically dispersing to obtain 2-8 g/L graphene-containing plating solution; and electroplating in plating solution at room temperature and 0.2-0.8 A/dm2 using silver plate as anode and substrate to be treated as cathode. USE - Method for forming cyanide-free silver and graphene composite coating on substrate. ADVANTAGE - The method is simple and easily controllable.