Operating a redox flow battery with a negative electrolyte imbalance
Abstract
Loss of flow battery electrode catalyst layers during self-discharge or charge reversal may be prevented by establishing and maintaining a negative electrolyte imbalance during at least parts of a flow battery's operation. Negative imbalance may be established and/or maintained actively, passively or both. Actively establishing a negative imbalance may involve detecting an imbalance that is less negative than a desired threshold, and processing one or both electrolytes until the imbalance reaches a desired negative level. Negative imbalance may be effectively established and maintained passively within a cell by constructing a cell with a negative electrode chamber that is larger than the cell's positive electrode chamber, thereby providing a larger quantity of negative electrolyte for reaction with positive electrolyte.
- Inventors:
- Issue Date:
- Research Org.:
- EnerVault Corporation, Sunnyvale, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1177112
- Patent Number(s):
- 8,993,183
- Application Number:
- 14/095,362
- Assignee:
- EnerVault Corporation (Sunnyvale, CA)
- DOE Contract Number:
- OE0000225
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2013 Dec 03
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Pham, Quoc, Chang, On, and Durairaj, Sumitha. Operating a redox flow battery with a negative electrolyte imbalance. United States: N. p., 2015.
Web.
Pham, Quoc, Chang, On, & Durairaj, Sumitha. Operating a redox flow battery with a negative electrolyte imbalance. United States.
Pham, Quoc, Chang, On, and Durairaj, Sumitha. Tue .
"Operating a redox flow battery with a negative electrolyte imbalance". United States. https://www.osti.gov/servlets/purl/1177112.
@article{osti_1177112,
title = {Operating a redox flow battery with a negative electrolyte imbalance},
author = {Pham, Quoc and Chang, On and Durairaj, Sumitha},
abstractNote = {Loss of flow battery electrode catalyst layers during self-discharge or charge reversal may be prevented by establishing and maintaining a negative electrolyte imbalance during at least parts of a flow battery's operation. Negative imbalance may be established and/or maintained actively, passively or both. Actively establishing a negative imbalance may involve detecting an imbalance that is less negative than a desired threshold, and processing one or both electrolytes until the imbalance reaches a desired negative level. Negative imbalance may be effectively established and maintained passively within a cell by constructing a cell with a negative electrode chamber that is larger than the cell's positive electrode chamber, thereby providing a larger quantity of negative electrolyte for reaction with positive electrolyte.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {3}
}
Works referenced in this record:
Potentiostatic Electrodeposition of Pt Nanoparticles on Carbon Black
journal, January 2011
- Miyake, Masao; Ueda, Takeshi; Hirato, Tetsuji
- Journal of The Electrochemical Society, Vol. 158, Issue 9