▎ 摘　　要

NOVELTY - Preparation of graphene-supported nickel-metal-organic framework hydrogen storage catalyst involves (i) weighing nickel nitrate hexahydrate and graphene oxide and dissolving in dimethylformamide, stirring at room temperature, uniformly mixing and reacting to obtain a mixed solution (a), (ii) weighing terephthalic acid and adding to the solution (a), and dissolving by fully stirring to obtain a mixed solution (b), and (iii) placing the solutions (a,b) in a reactor, reacting by heating, performing solid-liquid separation, collecting the solid product, washing, and drying. The mass ratio of nickel nitrate hexahydrate, graphene oxide, dimethylformamide and terephthalic acid is 1:0.05-0.2:80-120:0.5-1.5. USE - Preparation of graphene-supported nickel-metal-organic framework catalyst used for preparing magnesium hydride composite hydrogen storage material (all claimed). ADVANTAGE - The method enables simple preparation of graphene-supported nickel-metal-organic framework hydrogen storage catalyst under mild reaction conditions. The introduction of graphene can effectively improve the catalytic activity of the nickel-metal-organic framework catalyst. The catalyst has good thermal stability, which can improve the hydrogen storage kinetics of magnesium hydride composite hydrogen storage material.