▎ 摘　　要

NOVELTY - Preparing graphene modified membrane electrode comprises (a) dispersing graphene oxide in anhydrous ethanol, performing ultra-sonication to form dispersion of 1-15 g/l, and reacting with aminosilane coupling agent to obtain silane-modified graphene, (b) dissolving perfluorosulfonic acid ion exchange resin in organic solution, slowly adding modified graphene with stirring, and performing ultra-sonication to obtain mixture of doped graphene, (c) placing SPE membrane on bottom layer of tetrafluoroethylene container, uniformly coating doped graphene mixture on SPE film, evaporating solvent to form composite film, (d) preparing immersion liquid containing lead nitrate and sodium fluoride, layering composite film in flat manner, immersing exchange film layer containing graphene in immersion liquid, and washing with deionized water to obtain composite film, and (e) placing impregnated composite membrane in sodium hydroxide or potassium hydroxide solution and adding oxidizing agent to oxidize. USE - The graphene modified membrane electrode is useful to produce ozone (claimed). ADVANTAGE - The graphene modified membrane electrode has improved catalysis efficiency, and improves ozone generation efficiency. DETAILED DESCRIPTION - Preparing graphene modified membrane electrode comprises (a) dispersing graphene oxide in anhydrous ethanol, performing ultra-sonication for 1-30 minutes under specific power to form dispersion of 1-15 g/l, adding aminosilane coupling agent, and reacting under mechanical agitation for 1-12 hour and speed of 400-800 revolutions/minute to obtain silane-modified graphene, (b) dissolving perfluorosulfonic acid ion exchange resin in organic solution, slowly adding modified graphene with stirring, and performing ultra-sonication for 5-20 minute to obtain mixture of doped graphene, (c) placing solid polymer electrolyte (SPE) membrane on bottom layer of tetrafluoroethylene container, uniformly coating mixture of doped graphene on the SPE film, evaporating solvent to form a composite film having bottom layer of SPE film and an upper layer of graphene-containing exchange film layer, (d) preparing immersion liquid containing 0.1-1 mol/l lead nitrate and 5-200 mmol/l sodium fluoride, layering the composite film in flat manner, immersing the exchange film layer containing graphene in the immersion liquid for 1-10 hours, and washing with deionized water to obtain composite film, and (e) preparing 1-6 mol/l sodium hydroxide or potassium hydroxide solution, placing the impregnated composite membrane in solution, adding oxidizing agent, and oxidizing for 1-5 hours to obtain composite membrane in which beta -lead(IV) oxide is deposited.