▎ 摘　　要

NOVELTY - Preparing high density graphite-silver composite material involves preparing oxidized graphite alkene substrate using improved Hummers method, performing secondary ultrasonic dispersion dissolved in water, obtaining oxidized graphene aqueous solution, cleaning substrate, performing surface treatment by delta 3-Aminopropyltriethoxysilane after drying, dipping oxidized graphene aqueous solution to obtain oxidized graphite alkene substrate and mixing silver nitrate, sodium citrate and reducing agent to obtain silver nitrate reducing liquid. USE - Method for preparing high density graphite-silver composite material. DETAILED DESCRIPTION - Preparing high density graphite-silver composite material involves preparing oxidized graphite alkene substrate using improved Hummers method, performing secondary ultrasonic dispersion dissolved in water, obtaining oxidized graphene aqueous solution, cleaning substrate, performing surface treatment by delta 3-Aminopropyltriethoxysilane after drying, dipping oxidized graphene aqueous solution to obtain oxidized graphite alkene substrate and mixing silver nitrate, sodium citrate and reducing agent to obtain silver nitrate reducing liquid. The preparation of high density graphite-silver composite material further involves preparing silver nitrate reducing solution of graphene oxide by immersing substrate, blowing using nitrogen, taking soaked substrate, performing freeze-drying, reducing hydrazine steam, finishing reaction, using deionized water to wash to obtain graphite-silver composite material, performing heat treatment to obtain high density graphite-silver composite material, where, preparation is done under inert gas atmosphere.