Cascade redox flow battery systems
Abstract
A reduction/oxidation ("redox") flow battery system includes a series of electrochemical cells arranged in a cascade, whereby liquid electrolyte reacts in a first electrochemical cell (or group of cells) before being directed into a second cell (or group of cells) where it reacts before being directed to subsequent cells. The cascade includes 2 to n stages, each stage having one or more electrochemical cells. During a charge reaction, electrolyte entering a first stage will have a lower state-of-charge than electrolyte entering the nth stage. In some embodiments, cell components and/or characteristics may be configured based on a state-of-charge of electrolytes expected at each cascade stage. Such engineered cascades provide redox flow battery systems with higher energy efficiency over a broader range of current density than prior art arrangements.
- Inventors:
- Issue Date:
- Research Org.:
- Enervault Corporation, Sunnyvale, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1149689
- Patent Number(s):
- 8785023
- Application Number:
- 12/986,892
- Assignee:
- Enervault Corporation (Sunnyvale, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B60 - VEHICLES IN GENERAL B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- DOE Contract Number:
- OE0000225
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2011 Jan 07
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE
Citation Formats
Horne, Craig R., Kinoshita, Kim, Hickey, Darren B., Sha, Jay E., and Bose, Deepak. Cascade redox flow battery systems. United States: N. p., 2014.
Web.
Horne, Craig R., Kinoshita, Kim, Hickey, Darren B., Sha, Jay E., & Bose, Deepak. Cascade redox flow battery systems. United States.
Horne, Craig R., Kinoshita, Kim, Hickey, Darren B., Sha, Jay E., and Bose, Deepak. Tue .
"Cascade redox flow battery systems". United States. https://www.osti.gov/servlets/purl/1149689.
@article{osti_1149689,
title = {Cascade redox flow battery systems},
author = {Horne, Craig R. and Kinoshita, Kim and Hickey, Darren B. and Sha, Jay E. and Bose, Deepak},
abstractNote = {A reduction/oxidation ("redox") flow battery system includes a series of electrochemical cells arranged in a cascade, whereby liquid electrolyte reacts in a first electrochemical cell (or group of cells) before being directed into a second cell (or group of cells) where it reacts before being directed to subsequent cells. The cascade includes 2 to n stages, each stage having one or more electrochemical cells. During a charge reaction, electrolyte entering a first stage will have a lower state-of-charge than electrolyte entering the nth stage. In some embodiments, cell components and/or characteristics may be configured based on a state-of-charge of electrolytes expected at each cascade stage. Such engineered cascades provide redox flow battery systems with higher energy efficiency over a broader range of current density than prior art arrangements.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {7}
}
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