▎ 摘　　要

NOVELTY - Preparing graphene composite copper sulfide/nickel sulfide catalytic material comprises (i) preparing graphene oxide dispersion, (ii) dissolving copper nitrate, nickel nitrate and urea in deionized water, uniformly stirring, adding graphene dispersion liquid and uniformly mixing to form mixed liquid, (iii) placing mixed solution in polytetrafluoroethylene reactor, performing hydrothermal reaction, cooling to room temperature, centrifuging and washing with deionized water and ethanol, and drying to obtain precursor powder, and (iv) placing precursor powder and sulfur powder in two porcelain boats, and calcining in an argon atmosphere to obtain graphene composite copper sulfide/nickel sulfide catalytic material. USE - The method is useful in preparing graphene composite copper sulfide/nickel sulfide catalytic material in fields of zinc-air batteries, ethanol electrolysis cells, and water cracking catalysis (claimed). ADVANTAGE - The material: has synergistic effect between strong interface coupling and sulfur vacancy can adjust electronic structure, which promotes adsorption behavior of oxygen intermediates; and has excellent and efficient dual-functional catalytic performance for oxygen reduction and alcohol oxidation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for self-driving energy system.