▎ 摘　　要

NOVELTY - A graphene-based targeted hydrogen-absorbing nanocomposite material comprises graphene oxide as a substrate, 86.83 mol% palladium oxide nanoparticles provided on the graphene oxide, and alkyne-polyvinyl alcohol. The average particle size of palladium oxide nanoparticles is 10.59 nm. The substitution degree of alkyne branched chain of polyvinyl alcohol is 52%. The mass ratio of palladium oxide nanoparticles and alkyne-polyvinyl alcohol is 1:10. USE - Graphene-based targeted hydrogen-absorbing nanocomposite material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the graphene-based targeted hydrogen-absorbing nanocomposite material, which involves preparing graphene oxide, preparing graphene oxide-palladium oxide nanocomposite material by in-situ growth method, alkynylating modified polyvinyl alcohol, and mixing graphene oxide-palladium oxide nanocomposite material with obtained alkyne-polyvinyl alcohol.