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High-energy-density, aqueous, metal-polyiodide redox flow batteries

United States Patent

9,748,595
August 29, 2017
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Improved metal-based redox flow batteries (RFBs) can utilize a metal and a divalent cation of the metal (M.sup.2+) as an active redox couple for a first electrode and electrolyte, respectively, in a first half-cell. For example, the metal can be Zn. The RFBs can also utilize a second electrolyte having I.sup.-, anions of I.sub.x (for x.gtoreq.3), or both in an aqueous solution, wherein the I.sup.- and the anions of I.sub.x (for x.gtoreq.3) compose an active redox couple in a second half-cell.
Li; Bin (Richland, WA), Nie; Zimin (Richland, WA), Wang; Wei (Kennewick, WA), Liu; Jun (Richland, WA), Sprenkle; Vincent L. (Richland, WA)
Battelle Memorial Institute (Richland, WA)
14/ 089,499
20150147673
November 25, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract DE-AC0576RL01830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.