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    Enhancement of proton conductivity of polymer electrolyte membrane enabled by sulfonated nanotubes

    Access Status
    Fulltext not available
    Authors
    Zhang, H.
    Ma, C.
    Wang, J.
    Wang, X.
    Bai, H.
    Liu, Jian
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Zhang, H. and Ma, C. and Wang, J. and Wang, X. and Bai, H. and Liu, J. 2014. Enhancement of proton conductivity of polymer electrolyte membrane enabled by sulfonated nanotubes. International Journal of Hydrogen Energy. 39 (2): pp. 974-986.
    Source Title
    International Journal of Hydrogen Energy
    DOI
    10.1016/j.ijhydene.2013.10.145
    ISSN
    0360-3199
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/73499
    Collection
    • Curtin Research Publications
    Abstract

    Proton exchange membrane (PEM) with high proton conductivity is crucial to the commercial application of PEM fuel cell. Herein, sulfonated halloysite nanotubes (SHNTs) with tunable sulfonic acid group loading were synthesized and incorporated into sulfonated poly(ether ether ketone) (SPEEK) matrix to prepare nanocomposite membranes. Physicochemical characterization suggests that the well-dispersed SHNTs enhance the thermal and mechanical stabilities of nanocomposite membranes. The results of water uptake, ionic exchange capacity, and proton conductivity corroborate that the embedded SHNTs interconnect the ionic channels in SPEEK matrix and donate more continuous ionic networks. These networks then serve as proton pathways and allow efficient proton transfer with low resistance, affording enhanced proton conductivity. Particularly, incorporating 10% SHNTs affords the membrane a 61% increase in conductivity from 0.0152 to 0.0245 S cm-1. This study may provide new insights into the structure-properties relationships of nanotube-embedded conducting membranes for PEM fuel cell. Copyright © 2013, Hydrogen Energy Publications, LLC.

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