▎ 摘　　要

NOVELTY - The method involves adding the silver nitrate and polyvinylpyrrolidone into deionized water, and stirred to obtain mixed solution. The sodium borohydride (NaBH4) solution is added to the mixed solution, and stirred until the color of the solution changes from transparent to dark yellow. The non-metallic silicon substrate cleaned by the plasma cleaner is taken out from the plasma cleaner, washed with acetone and deionized water, and dried. The mixed solution is coated on the dried non-metal silicon substrate to form a uniform film. The non-metallic silicon substrate coated is placed with the mixed solution in the step S11 on a quartz glass sheet, and the quartz glass sheet is put into a vacuum tube furnace for heating treatment. The hearth of the vacuum tube furnace is opened to naturally cool the inside to room temperature, and a graphene nanoparticle composite material is obtained with high conductivity. USE - Method for preparing graphene nano-particle composite material with high electrical conductivity. ADVANTAGE - The graphene nanoparticle composite material has high conductivity, good conductive performance and good application prospect. The preparation method of graphene nanoparticle composite material has good conductive performance of graphene nano-particle composite material, greatly reduces the preparation step, the device instrument has small requirement, high preparation rate, and has good economic benefit. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a graphene nano-particle composite material with high electrical conductivity. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a graphene nano-particle voltage characteristic curve graph. (Drawing includes non-English language text)