▎ 摘　　要

NOVELTY - Preparing nickel hydroxide nanoparticle/graphene composite oxygen precipitation catalyst comprises dissolving nickel nitrate hexahydrate in mixed solution of water and triethylene glycol, adding graphene to form solution A, dissolving urea, tetrabutylammonium hydroxide solution and sodium bicarbonate in water to form solution B, mixing solution A and solution B and stirring, then carrying out hydrothermal reaction, centrifuging, washing, drying, obtaining nickel hydroxide nanoparticle/graphene, and freezing the weak acid aqueous solution, dissolving the nickel hydroxide nanoparticle/graphene in water for ultrasonic treatment, mixing with frozen weak acid aqueous solution, allowing to stand, centrifuging, washing and drying to obtain nickel hydroxide nanoparticle/graphene composite oxygen precipitation catalyst. USE - The catalyst is useful in oxygen evolution reaction, electrolytic water, and metal-air battery. ADVANTAGE - The method enables to prepare nickel hydroxide nanoparticle/graphene composite oxygen evolution catalyst that has excellent conductivity and electro-catalytic activity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for nickel hydroxide nanoparticle/graphene composite oxygen precipitation catalyst prepared by the above preparation method.