▎ 摘　　要

NOVELTY - Silver nanoparticle/multilayer graphene composite material comprises multi-layer graphene substrate and nano-silver particles uniformly distributed on the surface, where the thickness of the multi-layered graphene is about 3-6, and surface less oxygen functional peeling. The silver nanoparticles are prepared by dispersing silver nanoparticle on the multilayered graphene substrate. The particle diameter is about 50-100 nm. USE - The silver nanoparticle/multi-layer graphene composite material is used in conductive adhesive, conductive film, flexible transmission, electrostatic shielding, pressure sensor, catalyst, and antibacterial and photoelectric material. ADVANTAGE - The composite material is in conductive adhesive, conductive film, flexible transmission, electrostatic shielding, pressure sensor, catalyst, antibacterial and photoelectric material and other fields with potential application. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of silver nano particle/multi-layer graphene comprising taking dimethylformamide and deionized water at volume ratio of 8:2 into small glass bottle and mixing; weighing expansion graphite, adding into first mixed solvent and sonicating for 4 hours; pouring into PTFE tank, weighing silver nitrate, adding ammonia water, stirring at normal temperature for 10 minutes at 300 revolutions/minute (rpm), where volume ratio of ammonia water and silver nitrate is 5:3; adding weighed ascorbic acid and anhydrous sodium acetate at molar ratio of 0.4:1, where molar ratio of anhydrous sodium acetate to silver nitrate is 6.9:1, stirring for 10 minutes at normal temperature, and water bath magnetic stirring reacting at 40-50degreesC for 1-2 hours; and cooling, centrifuging and cleaning for 3 times with deionized water, and drying at 70degreesC for 24 hours.