▎ 摘　　要

NOVELTY - Preparing transition metal-nitrogen-sulfur ternary co-doped three-dimensional graphene material comprises e.g. dispersing oxidized graphene in water to obtain an oxidized graphene dispersion, mixing the obtained oxidized graphene dispersion with a crosslinking agent and a dopant precursor to obtain a mixed solution, placing the mixed solution into a hydrothermal reaction kettle and carrying out hydrothermal reaction to obtain the hydrogel, drying obtained hydrogel to obtain a crosslinking agent supported xerogel, and calcining obtained xerogel under argon atmosphere to final product. USE - The method is useful for preparing transition metal-nitrogen-sulfur ternary co-doped three-dimensional graphene material (claimed). ADVANTAGE - The method is simple. DETAILED DESCRIPTION - Preparing transition metal-nitrogen-sulfur ternary co-doped three-dimensional graphene material comprises (i) dispersing oxidized graphene in water to obtain an oxidized graphene dispersion, (ii) mixing the obtained oxidized graphene dispersion with a crosslinking agent and a dopant precursor to obtain a mixed solution, (iii) placing the mixed solution into a hydrothermal reaction kettle and carrying out hydrothermal reaction at 120-180 degrees C to obtain the hydrogel containing the graphene, the crosslinking agent and the dopant precursor, where the dopant precursor is M(SCN)x, (iv) drying obtained hydrogel to obtain a crosslinking agent supported xerogel, and (v) calcining obtained xerogel under argon atmosphere to final product. M = Fe, Co or Cu; and x = 1 or 2.