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Title: Rebalancing electrolytes in redox flow battery systems

Abstract

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:
Research Org.:
Enervault Corporation, Sunnyvale, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1166016
Patent Number(s):
8916281
Application Number:
13/433,189
Assignee:
Enervault Corporation (Sunnyvale, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
OE0000225
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Mar 28
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Chang, On Kok, and Pham, Ai Quoc. Rebalancing electrolytes in redox flow battery systems. United States: N. p., 2014. Web.
Chang, On Kok, & Pham, Ai Quoc. Rebalancing electrolytes in redox flow battery systems. United States.
Chang, On Kok, and Pham, Ai Quoc. Tue . "Rebalancing electrolytes in redox flow battery systems". United States. https://www.osti.gov/servlets/purl/1166016.
@article{osti_1166016,
title = {Rebalancing electrolytes in redox flow battery systems},
author = {Chang, On Kok and Pham, Ai Quoc},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {12}
}

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