▎ 摘　　要

NOVELTY - Preparation of graphene-based composite catalyst involves (s1) soaking graphite oxide particles in polar solvent and solid-liquid separating to obtain precipitate, (s2) dispersing the precipitate in nonpolar solvent, slowly adding metal salt powder, and fully mixing, (s3) solid-liquid separating, and drying the obtained solid powder at a certain temperature, and (s4) heat-treating the obtained dried solid powder at 300-1000℃ for 0.1-10 hours under protective atmosphere. USE - Preparation of graphene-based composite catalyst. ADVANTAGE - The method provides catalyst with high specific surface area, excellent conductivity, small particle size of the loaded component, uniform particle size, excellent catalytic activity, simple preparation process suitable for mass production, and less emission.