Global to push GA events into
skip to main content

Title: Rebalancing electrolytes in redox flow battery systems

Embodiments of redox flow battery rebalancing systems include a system for reacting an unbalanced flow battery electrolyte with a rebalance electrolyte in a first reaction cell. In some embodiments, the rebalance electrolyte may contain ferrous iron (Fe.sup.2+) which may be oxidized to ferric iron (Fe.sup.3+) in the first reaction cell. The reducing ability of the rebalance reactant may be restored in a second rebalance cell that is configured to reduce the ferric iron in the rebalance electrolyte back into ferrous iron through a reaction with metallic iron.
Inventors:
;
Issue Date:
OSTI Identifier:
1166016
Assignee:
Enervault Corporation (Sunnyvale, CA) NETL
Patent Number(s):
8,916,281
Application Number:
13/433,189
Contract Number:
OE0000225
Resource Relation:
Patent File Date: 2012 Mar 28
Research Org:
Enervault Corporation, Sunnyvale, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Works referenced in this record:

Redox Flow Battery
patent-application, May 2012

Synthesis of carbon nanotubes in graphite microchannels in gas-flow and submerged-in-liquid reactors
journal, August 2010

Modification of Daramic, microporous separator, for redox flow battery applications
journal, December 1992
  • Chieng, S. C.; Kazacos, M.; Skyllas-Kazacos, M.
  • Journal of Membrane Science, Vol. 75, Issue 1-2, p. 81-91
  • DOI: 10.1016/0376-7388(92)80008-8

Development of a 0.1 kW power accumulation pilot plant based on an Fe/Cr redox flow battery Part I. Considerations on flow-distribution design
journal, March 1994

Development of bipolar plates for fuel cells from graphite filled wet-lay material and a thermoplastic laminate skin layer
journal, March 2007

Synthesis of nanosized zirconium carbide by a sol–gel route
journal, January 2007
  • Dollé, Mickael; Gosset, Dominique; Bogicevic, Christine
  • Journal of the European Ceramic Society, Vol. 27, Issue 4, p. 2061-2067
  • DOI: 10.1016/j.jeurceramsoc.2006.06.005

Reticulated vitreous carbon as an electrode material
journal, January 2004

Possible use of vanadium redox-flow batteries for energy storage in small grids and stand-alone photovoltaic systems
journal, March 2004

Optimization studies on a Fe/Cr redox flow battery
journal, January 1992

Bipolar plates for PEM fuel cells
journal, May 2003

Overcharge in the vanadium redox battery and changes in electrical resistivity and surface functionality of graphite-felt electrodes
journal, November 1994

Injection moulding of graphite composite bipolar plates
journal, March 2006

Redox flow cells for energy conversion
journal, September 2006
  • Ponce de Leon, C.; Frias-Ferrer, A.; Gonzalez-Garcia, J.
  • Journal of Power Sources, Vol. 160, Issue 1, p. 716-732
  • DOI: 10.1016/j.jpowsour.2006.02.095

A dynamic performance model for redox-flow batteries involving soluble species
journal, November 2008