Membran für Protonenleitung

The invention relates to a membrane for proton conduction, made of a proton-conducting polymer for use in redox flow batteries. The polymer is sulfonated poly(ether ketone ether ketone ketone) (PEKEKK). The membranes are efficient, mechanically stable, oxidation-resistant in VO2+ with sulfuric acid,...

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Bibliographic Details
Main Authors Häring, Thomas, Häring, Davina
Format Patent
LanguageGerman
Published 26.09.2024
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:The invention relates to a membrane for proton conduction, made of a proton-conducting polymer for use in redox flow batteries. The polymer is sulfonated poly(ether ketone ether ketone ketone) (PEKEKK). The membranes are efficient, mechanically stable, oxidation-resistant in VO2+ with sulfuric acid, and exhibit long-term stability in the unblended state. The membranes can be used for several hundred to a thousand hours in vanadium redox flow batteries having black start capacity. Formula I, PEKEKK with a sulfonic acid group and an IEC of 1.73 meq/g.
Bibliography:Application Number: DE20221101515T