TWI798160B

• Main Authors: SHI, YI-ZHAO, MULLEN KLAUS
• Format: Patent
• Language: Chinese
• Published: 11.04.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention relates to a composite film of sulfonated polyvinylidene fluoride (S-PVdF) and sulfonated polyvinylidene fluoride-hexafluoropropylene copolymer containing proton ionic liquid, and its preparation method and application and, more particularly, a method for preparing a proton exchange membrane, a ferroelectric thin film and a piezoelectric film. The method for preparing the composite film of sulfonated polyvinylidene fluoride includes the steps of: (a) dissolving sulfonated polyvinylidene fluoride in suitable solvent; (b) adding proton ionic liquid and stirring the same until becoming uniform solution; and (c) placing the solution in an oven for baking until forming a sulfonated polyvinylidene fluoride composite film. The method for preparing the composite film of sulfonated polyvinylidene fluoride-hexafluoropropylene copolymer includes the steps of: (a) dissolving sulfonated polyvinylidene fluoride-hexafluoropropylene copolymer in suitable solvent; (b) adding proton ionic liquid and stirr