Proton conducting membrane of sulfonated fluorine-free polymer blend having low methanol uptake and low methanol permeability

Acid-base polymer blends for polymer electrolyte membranes have been prepared by blending sulfonated fluorine-free polymer such as poly(ether ether ketone) with poly(vinylpyrrolidone) to reduce methanol uptake and to decrease methanol permeability while maintaining high proton conductivity. As the a...

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Bibliographic Details
Main Authors WU, HAN-LANG, CHEN, CHIH-YUAN, MA, CHENI MARTIN
Format Patent
LanguageChinese
English
Published 16.08.2007
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOSITIONS BASED THEREON
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
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Summary:Acid-base polymer blends for polymer electrolyte membranes have been prepared by blending sulfonated fluorine-free polymer such as poly(ether ether ketone) with poly(vinylpyrrolidone) to reduce methanol uptake and to decrease methanol permeability while maintaining high proton conductivity. As the acid-base polymer blends contain 20-30 weight% of poly(vinylpyrrolidone), the acid-base interaction causes great reduction on methanol uptake and the methanol permeability, however, the proton conductivity of the acid-base polymer blends is still high. The acid-base polymer blends are suitable for direct methanol fuel cell (DMFC) application.
Bibliography:Application Number: TW20060104804