▎ 摘　　要

NOVELTY - Preparing membrane electrode, comprises e.g. (1) dissolving grapheme and perfluorosulfonic acid ion exchange resin into organic solution, dispersing graphene into ethanol, performing ultrasonicfication for 1-30 minutes under certain power to obtain 1-10 g/l dispersion solution, adding dispersion solution into perfluorosulfonic acid ion exchange resin solution, and uniformly/ultrasonically dispersing, (2) preparing the film taken from tetrafluoroethylene container, placing the SPE film on the bottom layer, uniformly coating the obtained product on the SPE film, volatilizing solvent to form a composite layer of the SPE film and the upper layer of the exchange layer containing graphene, and (3) producing impregnation solution comprising lead(II) nitrate, cerium nitrate and sodium fluoride, dipping composite film and upper layer of the exchange layer in impregnation solution for 1-10 hours, and washing with deionized water to obtain a composite film. USE - The method is useful for preparing membrane electrode. ADVANTAGE - The electrode has excellent catalytic effect, and improves ozone generation efficiency. DETAILED DESCRIPTION - Preparing membrane electrode, comprises (1) dissolving grapheme and perfluorosulfonic acid ion exchange resin into an organic solution, dispersing graphene into ethanol, performing ultrasonicfication for 1-30 minutes under certain power to obtain 1-10 g/l dispersion solution, adding dispersion solution into perfluorosulfonic acid ion exchange resin solution, and uniformly/ultrasonically dispersing, (2) preparing the film taken from tetrafluoroethylene container, placing the SPE film on the bottom layer, uniformly coating the obtained product on the SPE film, volatilizing solvent to form a composite layer of the SPE film and the upper layer of the exchange layer containing graphene, (3) producing impregnation solution comprising 0.1-1 mol/l lead(II) nitrate, 0.01-0.2 mol/l of cerium nitrate and 1-100 mmol/l sodium fluoride, dipping composite film obtained in the step (2) and the upper layer of the exchange layer in impregnation solution for 1-10 hours, and washing with deionized water to obtain a composite film, and (4) preparing 1-6 mol/l of sodium hydroxide or potassium hydroxide solution, placing the impregnated composite film in a solution, adding oxidizing agent, and oxidizing for 1-5 hours to obtain composite membrane in which beta -lead(IV) oxide and cerium(IV) oxide are deposited.