Sulfonated PBI Gel Membranes for Redox Flow Batteries

Sulfonated polybenzimidazole (s-PBI) gel membranes were prepared and shown to have a high stability in concentrated sulfuric acid and strongly oxidizing vanadium (V) solutions. These membranes were considered candidates for use in vanadium redox flow batteries, and compared to the commonly used &quo...

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Bibliographic Details
Published inJournal of the Electrochemical Society Vol. 166; no. 8; pp. A1449 - A1455
Main Authors Wang, Lihui, Pingitore, Andrew T., Xie, Wei, Yang, Zhiwei, Perry, Michael L., Benicewicz, Brian C.
Format Journal Article
LanguageEnglish
Published United States The Electrochemical Society 2019
IOP Publishing - The Electrochemical Society
Subjects
Electrochemistry
MATERIALS SCIENCE
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Summary:Sulfonated polybenzimidazole (s-PBI) gel membranes were prepared and shown to have a high stability in concentrated sulfuric acid and strongly oxidizing vanadium (V) solutions. These membranes were considered candidates for use in vanadium redox flow batteries, and compared to the commonly used "conventionally imbibed" meta-polybenzimidazole (m-PBI) membranes cast from N,N'-dimethylacetamide (DMAc) solutions. The s-PBI membranes exhibited high conductivities (up to ∼240 mS cm−1) and low performance degradation during in-cell testing.
Bibliography:0471908JES
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
AR0001478; AR0000147
ISSN:0013-4651
1945-7111
DOI:10.1149/2.0471908jes