▎ 摘　　要

NOVELTY - A ruthenium-molybdenum oxide/reduced graphene oxide composite material comprises a reduced graphene oxide substrate and ruthenium-molybdenum oxide nanocrystals provided on the substrate. The ruthenium-molybdenum oxide nanocrystals comprise uniformly compounded ruthenium and molybdenum oxide. The ruthenium is uniformly modified on the surface of molybdenum oxide. USE - Ruthenium-molybdenum oxide/reduced graphene oxide composite material is used as catalyst in hydrogen evolution reaction of fuel cell (claimed). ADVANTAGE - The ruthenium-molybdenum oxide/reduced graphene oxide composite material has excellent hydrogen evolution reaction performance in fuel cell, and is prepared using in-situ growth self-assembly method, by simple process. DETAILED DESCRIPTION - A ruthenium-molybdenum oxide/reduced graphene oxide composite material comprises a reduced graphene oxide substrate and ruthenium-molybdenum oxide (Ru-MoO3-x, where x is 0-3) nanocrystals provided on the substrate. The ruthenium-molybdenum oxide nanocrystals comprise uniformly compounded ruthenium and molybdenum oxide. The ruthenium is uniformly modified on the surface of molybdenum oxide. An INDEPENDENT CLAIM is included for preparation of ruthenium-molybdenum oxide/reduced graphene oxide composite material, which involves dissolving reduced graphene oxide in water, adding polydiallyldimethylammonium chloride (PDDA) solution, surface-modifying, drying, obtaining reduced graphene-PDDA, dissolving reduced graphene-PDDA in water, adding sodium molybdate dihydrate and hexaammineruthenium(III) chloride, stirring, centrifuging, vacuum-drying, and carbonizing.