Low permeability polybenzimidazole (PBI) gel membranes for redox flow batteries
Abstract
Disclosed are redox flow battery membranes, redox flow batteries incorporating the membranes, and methods of forming the membranes. The membranes include a densified polybenzimidazole gel membrane that is capable of incorporating a high liquid content without loss of structure that is formed according to a process that includes in situ hydrolysis of a polyphosphoric acid solvent followed by densification of the gel membrane. The densified membranes are then imbibed with a redox flow battery supporting electrolyte such as sulfuric acid and can operate at very high ionic conductivities of about 50 mS/cm or greater and with low permeability of redox couple ions, e.g. vanadium ions, of about 10−7 cm2/s or less. Redox flow batteries incorporating the membranes can operate at current densities of about 50 mA/cm2 or greater.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of South Carolina, Columbia, SC (United States)
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- OSTI Identifier:
- 1986752
- Patent Number(s):
- 11482721
- Application Number:
- 16/570,253
- Assignee:
- University of South Carolina (Columbia, SC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
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:
- AR0000767
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 09/13/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Benicewicz, Brian C., Murdock, Laura, Wang, Lihui, Huang, Fei, and Pingitore, Andrew. Low permeability polybenzimidazole (PBI) gel membranes for redox flow batteries. United States: N. p., 2022.
Web.
Benicewicz, Brian C., Murdock, Laura, Wang, Lihui, Huang, Fei, & Pingitore, Andrew. Low permeability polybenzimidazole (PBI) gel membranes for redox flow batteries. United States.
Benicewicz, Brian C., Murdock, Laura, Wang, Lihui, Huang, Fei, and Pingitore, Andrew. Tue .
"Low permeability polybenzimidazole (PBI) gel membranes for redox flow batteries". United States. https://www.osti.gov/servlets/purl/1986752.
@article{osti_1986752,
title = {Low permeability polybenzimidazole (PBI) gel membranes for redox flow batteries},
author = {Benicewicz, Brian C. and Murdock, Laura and Wang, Lihui and Huang, Fei and Pingitore, Andrew},
abstractNote = {Disclosed are redox flow battery membranes, redox flow batteries incorporating the membranes, and methods of forming the membranes. The membranes include a densified polybenzimidazole gel membrane that is capable of incorporating a high liquid content without loss of structure that is formed according to a process that includes in situ hydrolysis of a polyphosphoric acid solvent followed by densification of the gel membrane. The densified membranes are then imbibed with a redox flow battery supporting electrolyte such as sulfuric acid and can operate at very high ionic conductivities of about 50 mS/cm or greater and with low permeability of redox couple ions, e.g. vanadium ions, of about 10−7 cm2/s or less. Redox flow batteries incorporating the membranes can operate at current densities of about 50 mA/cm2 or greater.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {10}
}
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- US Patent Application 13/240318; 20120115050