▎ 摘　　要

NOVELTY - Preparing platinum single-atom material comprises (i) using nickel chloride hexahydrate, cobalt chloride hexahydrate and graphene oxide as raw materials to dissolve in the eutectic solution to form electrolyte, performing constant potential complex electro-deposition in a standard three-electrode system to obtain nickel-cobalt-graphene oxide complex electrode materials, and placing nickel-cobalt-graphene oxide complex electrode material in a tube furnace for nitriding, where the urea is used as a nitrogen source, (ii) using the nickel-cobalt-graphene oxide-nitrogen complex material as the working electrode to form a three-electrode system, adding the alkyl imidazole ionic liquid into the electrolytic cell containing the three-electrode system, and using cyclic voltammetry for anchoring the single-atom platinum, and (iii) taking out the platinum single-atom-supported complex electrode material from the electrolytic cell, cleaning, and finally drying. USE - The method is useful for preparing platinum single-atom material, which is useful in the field of hydrogen production of electrolytic water. ADVANTAGE - The method: is simple, economical and environmental friendly; has degradability and can be recycled, and relatively wide electrochemical window, high viscosity, controlled process, and low device condition; utilizes alkyl imidazole ion liquid ion liquid poison; directly prepares platinum single atom material by electrochemical method; reduces the dosage of platinum in the complex electrode material; improves the utilization rate of the platinum; and greatly shortens the process.