▎ 摘　　要

NOVELTY - Preparing single-atom platinum composite electro-catalysis hydrogen evolution material comprises (i) mixing choline chloride and ethylene glycol and stirring until forming uniform colorless transparent solution A, (ii) adding metal chloride into the low co-melting solvent prepared in step (i) and stirring to obtain uniform ink green transparent solution B, (iii) adding the second phase solid particles to the solution B, constant temperature mixing and stirring to obtain the turbid black electrolyte C, (iv) synthesizing nickel-copper-graphene oxide complex material, (v) taking out the nickel-copper-graphene oxide complex material obtained in step (iv) from the electrolytic cell, cleaning and drying, (vi) placing the dried sample obtained in step (v) in a ceramic boat, adding urea in another ceramic boat, introducing argon gas, heating, calcining, washing and drying and (vii) adding the solution A into electrolytic cell containing three electrodes and anchoring the single atom-platinum. USE - Preparation method of single-atom platinum composite electro-catalysis hydrogen evolution material used in electrolytic water hydrogen production technology field, preferably fossil fuel, biological energy hydrogen production, thermal decomposition water hydrogen and solar photolysis water. ADVANTAGE - The method uses low eutectic solvent, has a relatively wide electrochemical window, and has a higher viscosity, can make the second phase solid particles better dispersed in the electrolyte, ensuring the formation of the uniform composite material. In addition, the solvent is non-toxic, has degradability and can be recycled, using the solvent to directly prepare single-atom platinum composite electro-catalysis hydrogen evolution material by electrochemical method is a green environment-friendly controllable synthesis new technique. The second phase single layer graphene can increase the active specific surface area of the electrode material, so as to improve the hydrogen evolution catalytic activity, in addition, graphene has more defects, can be effectively embedded N atom, increasing the whole carrier fixed platinum single atom capability.