▎ 摘　　要

NOVELTY - Preparing a sulfur-nitrogen co-doped graphene-supported cobalt sulfide nickel catalytic material involves dissolving a metal cobalt source, a nickel source and thiourea in a solvent, mixing by ultrasonic stirring, then adding aqueous ammonia dropwise, stirring and mixing to obtain a uniform solution, adding graphene oxide to the homogeneous solution. After ultrasonic mixing, hydrothermal treatment, centrifugal washing, and freeze-drying are performed to obtain a graphene-supported cobalt sulfide nickel catalytic material. The graphene-supported cobalt sulfide nickel composite is calcined under a nitrogen atmosphere and graphene oxide is reduced to obtain a sulfur-nitrogen co-doped graphene-supported cobalt sulfide nickel catalyst material. USE - Method for preparing sulfur-nitrogen co-doped graphene-supported cobalt sulfide nickel catalytic material for catalytic precipitation of water electrolysis and oxygen evolution (claimed) and for water-cracking cathode and anode catalytic materials. ADVANTAGE - The method enables to prepare sulfur-nitrogen co-doped graphene-supported cobalt sulfide nickel catalytic material in simple manner with low cost, low energy consumption and is environmentally friendly, has good electrical conductivity and electrochemical catalytic properties.