▎ 摘　　要

NOVELTY - Preparing platinum quantum dot doped graphene-based conductive ink comprises providing graphite powder, then using modified hummers method for preparing graphene oxide to obtain obtain graphene oxide acetone dispersion, adding heteropoly acid to the graphene oxide acetone dispersion, stirring, mixing, then centrifuging for collecting the first precipitate, drying, resuspending the first precipitate with acetone, adding platinum acetylacetonate, stirring and mixing, centrifuging, then drying, slowly adding platinum quantum dot-doped graphene dispersion, and conductive carbon black to first dispersant to obtain platinum quantum dot-doped graphene-charcoal black paste, adding the resin slurry and second dispersant slowly to the stirred platinum quantum dot-doped graphene-carbon black slurry, add structure stabilizer, polyacrylonitrile-maleic anhydride copolymer, and flatting agent to the platinum quantum dot-doped graphene-based mixed solution while stirring, and stirring. USE - The conductive ink is useful in preparing graphene conductive film (claimed). ADVANTAGE - The conductive ink: has considerable flexibility, toughness, hardness and adhesion, high temperature resistance and has long service life; and can be printed on different substrates. DETAILED DESCRIPTION - Preparing platinum quantum dot doped graphene-based conductive ink comprises (a) providing graphite powder, then using modified hummers method for preparing graphene oxide to obtain obtain graphene oxide acetone dispersion after centrifugation and acetone resuspension, (b) adding heteropoly acid to the graphene oxide acetone dispersion, stirring, mixing, then centrifuging for collecting the first precipitate, drying, resuspending the first precipitate with acetone, adding platinum acetylacetonate, stirring and mixing, centrifuging for collecting the second precipitate, then drying, placing the second precipitate in hydrogen environment for reduction to prepare platinum quantum dot-doped graphene, and resuspending in ethanol to prepare a platinum quantum dot-doped graphene dispersion, (c) taking 50-250 pts. wt. first dispersant, stirring, slowly adding 15-40 pts. wt. platinum quantum dot-doped graphene dispersion, and 5-25 pts. wt. conductive carbon black to first dispersant to obtain platinum quantum dot-doped graphene-charcoal black paste, (d) taking 50-250 pts. wt. first dispersant, stirring, slowly adding 5-20 pts. wt. peeling resin to the first dispersant to prepare a resin slurry, (e) adding the resin slurry and 50-200 pts. wt. second dispersant slowly in a drop wise manner to the stirred platinum quantum dot-doped graphene-carbon black slurry, transferring the mixed solution to an autoclave at 70-100 degrees C, reacting for 0.5-2 hours, cooling naturally, continuing stirring during the reaction to prepare a platinum quantum dot-doped graphene-based mixed solution, and (f) add 0.5-2.5 pts. wt. structure stabilizer, 0.5-2.5 pts. wt. polyacrylonitrile-maleic anhydride copolymer, and 10-5 pts. wt. flatting agent to the platinum quantum dot-doped graphene-based mixed solution while stirring, stirring at a rate of 1000-5000 revolutions/minute for 0.5-6 hours, where heteropoly acid comprises phosphomolybdic acid, silimolybdic acid, phosphotungstic acid and/or silicotungstic acid. An INDEPENDENT CLAIM is also included for platinum quantum dot doped graphene-based conductive ink prepared by the above method.