▎ 摘　　要

NOVELTY - Preparing carbon-carried nickel oxide/nickel iron oxide spinel type solid solution electrolytic water oxygen evolution catalyst, involves weighing a certain mass of nickel-iron layered double hydroxides (LDH) into deionized water, and after high-speed shearing and stirring, fully sonicated at a certain power to obtain a uniformly dispersed nickel-iron LDH suspension. Certain volume of nickel-iron LDH suspension is added dropwise to the monolayer graphene oxide (GO) solution under stirring conditions, and the mass ratio of nickel-iron LDH to GO was controlled at 2.5:1-7:1, and after fully stirring, the flocculent precipitate is obtained, and an appropriate amount of chemical reducing agent is added to reduce the LDH/ reduced graphene oxide (rGO) complex at a certain temperature. The composite is fully stirred in a low concentration ferric oxyhydroxide colloid, the solid-liquid was separated and dried, and then calcined at 450-550 degrees Celsius for 1-2 hours in a protective atmosphere. USE - Method for preparing carbon-carried nickel oxide/nickel iron oxide spinel type solid solution electrolytic water oxygen evolution catalyst for use in alkaline water electrolysis. ADVANTAGE - The oxygen evolution catalyst has large specific surface area, rich catalytic activity site, and good conductivity and the catalyst has the advantages of low cost, high catalytic activity, good stability, and has wide application value in alkaline water electrolysis. DETAILED DESCRIPTION - Preparing carbon-carried nickel oxide/nickel iron oxide spinel type solid solution electrolytic water oxygen evolution catalyst, involves weighing a certain mass of nickel-iron layered double hydroxides (LDH) into deionized water, and after high-speed shearing and stirring, fully sonicated at a certain power to obtain a uniformly dispersed nickel-iron LDH suspension. Certain volume of nickel-iron LDH suspension is added dropwise to the monolayer graphene oxide (GO) solution under stirring conditions, and the mass ratio of nickel-iron LDH to GO was controlled at 2.5:1-7:1, and after fully stirring, the flocculent precipitate is obtained, and an appropriate amount of chemical reducing agent is added to reduce the LDH/ reduced graphene oxide (rGO) complex at a certain temperature. The composite is fully stirred in a low concentration ferric oxyhydroxide colloid, the solid-liquid was separated and then dried, and then calcined at 450-550 degrees Celsius for 1-2 hours in a protective atmosphere to obtain carbon-supported nickel oxide/nickel iron oxide spinel oxygen evolution catalyst for water electrolysis of stone type solid solution.