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

Patent ·
OSTI ID:1377829

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.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
Assignee:
Battelle Memorial Institute
Patent Number(s):
9,748,595
Application Number:
14/089,499
OSTI ID:
1377829
Country of Publication:
United States
Language:
English

References (2)

Battery Technologies for Large-Scale Stationary Energy Storage journal July 2011
Nonaqueous Liquid Electrolytes for Lithium-Based Rechargeable Batteries journal October 2004