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US 8,691,413 B2Granted
Aqueous redox flow batteries featuring improved cell design characteristics
AssigneeSun Catalytix Corporation
InventorsArthur J. Esswein, John Goeltz, Steven Y. Reece, Thomas H. Madden, Desiree Amadeo, Thomas D. Jarvi, Evan R. King
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Abstract
This invention is directed to aqueous redox flow batteries comprising ionically charged redox active materials and separators, wherein the separator is less than about 100 microns and the flow battery is capable of operating with high energy densities and voltage efficiencies.
Claims28
A flow battery, comprising:
- (a) a first aqueous electrolyte comprising a first metal ligand coordination compound;
- (b) a second aqueous electrolyte comprising a second metal ligand coordination compound;
- (c) a separator positioned between said first and second aqueous electrolytes, the separator comprising an ionomer membrane;
- and
- (d) a mobile ion;
- wherein the separator has a thickness of less than 100 microns and each of the first and second metal ligand coordination compound, in both oxidized and reduced forms, and the ionomer membrane have an associated net charge that is the same sign.
3 more elements
Dependencies are inferred from the claim text.