▎ 摘　　要

NOVELTY - Preparing self-supporting oxygen evolution electro-catalyst with solar photo-thermal coupling comprises (a) dissolving nickel salt, iron salt and urea in a mixed solvent composed of N, N-dimethylformamide and deionized water, adjusting the pH value to 9-11, stirring uniformly, pouring into the reaction kettle, vertically inserting the conductive substrate, reacting at 90-180℃, reacting for 6-10 hours, cooling to room temperature, taking out, cleaning with deionizing water and drying to obtain the self-supported oxidized graphene-nickel iron hydroxide, (b) annealing the self-support graphene-n-diphenyltriane obtained in the step (i) in a tubular furnace under the protection of inert gas or nitrogen, and taking out and cleaning the deionization water, and drying. USE - Preparation method of self-supporting oxygen evolution electro-catalyst with solar photo-thermal coupling used in electrolytic water hydrogen production. ADVANTAGE - The method enables to prepare self-supporting oxygen evolution electro-catalyst of coupling solar photo-thermal energy by using solar energy by photothermal promoting electrocatalysis oxygen evolution reaction, which has low energy consumption of electrolytic water evolution oxygen.