▎ 摘　　要

NOVELTY - Graphene oxide-doped polyvinyl chloride (PVA) basic anion exchange polymer film comprises water-soluble polyvinyl alcohol (PVA) containing hydroxyl groups, poly diallyl dimethyl ammonium chloride containing quaternary ammonium groups and graphene oxide. USE - Graphene oxide-doped polyvinyl chloride basic anion exchange polymer film used in electrochemical energy device, which is a carbon dioxide electrochemical reduction reactor or metal-air battery (claimed). ADVANTAGE - The graphene oxide doped PVA basic anion exchange polymer film has good conductivity, high chemical stability, simple and mild process, low carbon and environment-friendly raw material, low cost and easy for electrochemical device application. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the graphene oxide doped PVA-based basic anion exchange polymer film, which involves: (1) dissolving graphene oxide in deionized water, and performing ultrasonic dispersion at normal temperature to obtain a fully and uniformly mixed solution A; (2) dissolving water-soluble PVA containing hydroxyl in deionized water, heating in a water bath at 80-95℃, and stirring until the mixture is uniform and transparent to obtain a solution B; and slowly adding the solution of poly (diallyldimethylammonium chloride) containing quaternary ammonium groups into the solution B, and stirring to obtain a uniform and transparent solution C; and mixing solution A and solution C, and continuously stirring the mixture until the mixture is uniform, and casting the mixture into a culture dish, and naturally drying the mixture to form a film; and (3) peeling the film prepared from the culture dish, and sequentially performing physical and chemical crosslinking, and finally soaking in a potassium hydroxide (KOH) solution for ion exchange.