Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study

    Access Status
    Fulltext not available
    Authors
    Yang, H.
    Zhang, Jin
    Li, J.
    Jiang, San Ping
    Forsyth, M.
    Zhu, H.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Yang, H. and Zhang, J. and Li, J. and Jiang, S.P. and Forsyth, M. and Zhu, H. 2017. Proton Transport in Hierarchical-Structured Nafion Membranes: A NMR Study. The Journal of Physical Chemistry Letters. 8 (15): pp. 3624-3629.
    Source Title
    The Journal of Physical Chemistry Letters
    DOI
    10.1021/acs.jpclett.7b01557
    ISSN
    1948-7185
    School
    Fuels and Energy Technology Institute
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150102025
    http://purl.org/au-research/grants/arc/DP150102044
    URI
    http://hdl.handle.net/20.500.11937/66351
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 American Chemical Society. It is known that hierarchical structure plays a key role in many unique material properties such as self-cleaning effect of lotus leaves and the antifogging property of the compound eyes of mosquitoes. This study reports a series of highly ordered mesoporous Nafion membranes with unique hierarchical structural features at the nanometer scale. Using NMR, we show for the first time that, at low RH conditions, the proton in the ionic domains migrates via a surface diffusion mechanism and exhibits approximately 2 orders of magnitude faster transport than that in the nanopores, whereas the nanopores play a role of reservoir and maintain water and thereby conductivity at higher temperature and lower humidities. Thereby creating hierarchical nanoscale structures is a feasible and promising strategy to develop PEMs that would enable efficient electrochemical performance in devices such as fuel cells, even in the absence of high humidity and at elevated temperatures.

    Related items

    Showing items related by title, author, creator and subject.

    • Research on pendulum-type and rotational waves in 2D discrete blocky rock masses with complex hierarchical structures
      Jiang, K.; Lu, Chunsheng ; Qi, C.; Wang, Z. (2024)
      Rock masses consist of nesting rock blocks with various scales separated by weak structural layers, and their complex hierarchical structures play a significant role in dynamic deformation and stress wave propagation. In ...
    • Efficient duration modelling in the hierarchical hidden semi-Markov models and their applications
      Duong, Thi V. T. (2008)
      Modeling patterns in temporal data has arisen as an important problem in engineering and science. This has led to the popularity of several dynamic models, in particular the renowned hidden Markov model (HMM) [Rabiner, ...
    • Mesoporous Organosilica Hollow Microspheres with Hierarchical Structures on the Shell
      Zhang, X.; Liu, T.; Sun, W.; Liu, Jian (2013)
      Hierarchical mesoporous organosilicas with hollow structures have been readily synthesized from one template approach by using Pluronic P123 as a surfactant and 1,2-bis(trimethoxysilyl)ethane as precursor in mild HAc-NaAc ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.