▎ 摘　　要

NOVELTY - The preparation method of pyrite-reduced graphene oxide composite material involves synthesizing graphene oxide by Hummer method, dissolving graphene oxide in dimethylformamide, orderly adding aqueous solution of ferric nitrate nonahydrate and thioacetamide, stirring at 85-95 degrees C for overnight, hydrothermally reacting to reduce graphene oxide, centrifuging, washing, freeze-drying, and calcining under hydrogen, where the mass ratio of graphene oxide, ferric nitrate nonahydrate and thioacetamide is (3-7):(60-80):(140-160). USE - Preparation method of pyrite-reduced graphene oxide composite material for electrocatalytic hydrogen evolution in acidic solution (claimed). ADVANTAGE - The method enables preparation of pyrite-reduced graphene oxide composite material with excellent hydrogen separation performance and stability, by simple and economical process.