Polymeric electrolyte membrane for a redox flow battery
Assignee3M Innovative Properties Company
InventorsMark S. Schaberg, Gregory M. Haugen, Steven J. Hamrock, Pa N. Xiong
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Abstract
Described herein is a polymeric electrolyte membrane for a redox flow battery comprising (i) a polymer, (ii) a plurality of pendent groups comprising a sulfonic acid, and (iii) a plurality of pendent groups comprising a sulfonamide.
Claims20
A redox flow battery system comprising:
- (a) an anolyte and a catholyte;
- and
- (b) a polymeric electrolyte membrane comprising (i) a polymer, (ii) a plurality of pendent groups comprising a sulfonic acid, and (iii) a plurality of pendent groups comprising a sulfonamide.
A solid polymeric electrolyte membrane prepared through cast membrane formation of a liquid composition containing (i) a polymer, (ii) a plurality of pendent groups comprising a sulfonic acid, and (iii) a plurality of pendent groups comprising a sulfonamide.
A solid polymeric electrolyte membrane comprising (i) a polymer, (ii) a plurality of pendent groups comprising a sulfonic acid, and (iii) a plurality of pendent groups comprising a sulfonamide, wherein the plurality of pendent groups comprising a sulfonamide are distributed substantially uniformly through a cross-section of the solid polymeric electrolyte membrane.
A process for using a redox flow battery comprising:
- providing an electrochemical device comprising a solid polymeric electrolyte membrane, wherein the solid polymeric electrolyte membrane comprises (i) a polymer, (ii) a plurality of pendent groups comprising a sulfonic acid, and (iii) a plurality of pendent groups comprising a sulfonamide, the solid polymeric electrolyte membrane having first and second major surfaces;
- introducing a catholyte in contact with the first major surface of the solid polymeric electrolyte membrane;
- introducing an anolyte in contact with the second major surface of the solid polymeric electrolyte membrane;
- and
- applying a voltage between the catholyte and the anolyte across the solid polymeric electrolyte membrane.
Dependencies are inferred from the claim text.