▎ 摘　　要

NOVELTY - Method for preparing graphene-based composite binary metal sulfide electro catalyst comprises adding ferrous chloride, ammonium heptamolybdate, and thin layer graphene sheet into deionized water, ultrasonically dispersing uniformly to obtain solution A, stirring and dissolving thiourea in glycerol to obtain the solution B, layering the solution A after layering, taking the graphene layer attached, mixing the upper layer attached with the graphene and solution B uniformly, placing in the high pressure reaction kettle, sealing at 180-260?oC for hydrothermal reaction for 10-30 hours, naturally cooling. USE - Method for preparing graphene-based composite binary metal sulfide electro catalyst used as substrate for preparing graphene, realizing nano-sheet in-situ growth and metal vulcanization reaction by hydrothermal one-step method. ADVANTAGE - The method provides graphene-based composite binary metal sulfide electro catalyst with high activity, good stability and low cost and good application prospect, is simple and easy, economic and environment-friendly, and applied to preparation of other metal sulfide electro catalysts realizing the application of electrolytic water.