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    Acid Pretreatment to Enhance Proton Transport of a Polysulfone-Polyvinylpyrrolidone Membrane for Application in Vanadium Redox Flow Batteries

    Access Status
    Fulltext not available
    Authors
    Wu, C.
    Zhang, J.
    Lu, S.
    Xiang, Y.
    Jiang, San Ping
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Wu, C. and Zhang, J. and Lu, S. and Xiang, Y. and Jiang, S.P. 2018. Acid Pretreatment to Enhance Proton Transport of a Polysulfone-Polyvinylpyrrolidone Membrane for Application in Vanadium Redox Flow Batteries. ChemPlusChem. 83 (10): pp. 909-914.
    Source Title
    ChemPlusChem
    DOI
    10.1002/cplu.201800243
    ISSN
    2192-6506
    School
    Fuels and Energy Technology Institute
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP180100568
    http://purl.org/au-research/grants/arc/DP180100731
    URI
    http://hdl.handle.net/20.500.11937/71007
    Collection
    • Curtin Research Publications
    Abstract

    © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim An acid pretreatment strategy is developed to enhance the proton transport of polysulfone-polyvinylpyrrolidone (PSF-PVP) membranes for application in vanadium redox flow batteries (VRFB). The acid pretreatment leads to the formation of ionic conducting clusters with a size of around d=15.41 nm in the membrane (p-PSF-PVP). As a result, the proton conductivity and proton/vanadium ion selectivity of the p-PSF-PVP membrane increases to 6.60×10-2 S cm-1 and 10.63×107 S min cm-3, respectively, values significantly higher than 2.30×10-2 S cm-1 and 6.67×107 S min cm-3 of the pristine PSF-PVP membrane. Moreover, a VRFB assembled with the p-PSF-PVP membrane exhibits a high coulombic efficiency of 98.6 % and an outstanding energy efficiency of 88.5 %. The results indicate that treatment with either sulfuric acid or phosphoric acid leads to an improvement of membrane properties, and the acid pretreatment is a promising strategy to significantly enhance the performance of the PSF-PVP membrane for VRFB application.

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