Development of sulfonated FEP-Nafion hybrid proton exchange membranes for PEFC

Y. Sato, K. Fujii, N. Mitani, A. Matsuura, T. Kakigi, F. Muto, J. Li, A. Oshima, Masakazu Washio

    Research output: Contribution to journalArticle

    17 Citations (Scopus)

    Abstract

    The performance of polymer electrolyte fuel cell (PEFC) is affected by an interfacial property between a proton exchange membrane (PEM) and electrodes. Thus, to develop a well-laminated membrane electrode assembly (MEA), a hybrid PEM (FN) was fabricated by mixing a radiation grafted membrane (sulfonated FEP) with ionomer (Nafion® dispersion) which is applied to coat the interface of the PEM and electrodes. The obtained FN, sulfonated FEP and Nafion®112 were characterized in terms of water uptake, ion exchange capacity (IEC), polarization performance and electrochemical impedance. FN showed high IEC and water uptake, which would induce the highest ionic conductivity (IC) among tested PEMs. In terms of FN, the interface between the PEM and electrodes should have been improved because FN showed the lowest charge transfer resistance than other tested PEMs. The high IC and improved interface between the PEM and electrodes resulted in the best cell performance of FN in tested PEMs.

    Original languageEnglish
    Pages (from-to)213-216
    Number of pages4
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume265
    Issue number1
    DOIs
    Publication statusPublished - 2007 Dec

    Fingerprint

    Polytetrafluoroethylene
    Electrolytes
    fuel cells
    Protons
    Fuel cells
    Ion exchange
    Polymers
    electrolytes
    membranes
    Membranes
    protons
    polymers
    Electrodes
    electrodes
    Ionic conductivity
    ion currents
    Ionomers
    Water
    perfluorosulfonic acid
    water

    Keywords

    • 61.82.Pv
    • Electrochemical impedance spectroscopy (EIS)
    • PEFC
    • PEM
    • Radiation grafting

    ASJC Scopus subject areas

    • Surfaces, Coatings and Films
    • Instrumentation
    • Surfaces and Interfaces

    Cite this

    Development of sulfonated FEP-Nafion hybrid proton exchange membranes for PEFC. / Sato, Y.; Fujii, K.; Mitani, N.; Matsuura, A.; Kakigi, T.; Muto, F.; Li, J.; Oshima, A.; Washio, Masakazu.

    In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 265, No. 1, 12.2007, p. 213-216.

    Research output: Contribution to journalArticle

    Sato, Y. ; Fujii, K. ; Mitani, N. ; Matsuura, A. ; Kakigi, T. ; Muto, F. ; Li, J. ; Oshima, A. ; Washio, Masakazu. / Development of sulfonated FEP-Nafion hybrid proton exchange membranes for PEFC. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2007 ; Vol. 265, No. 1. pp. 213-216.
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    AU - Li, J.

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    AB - The performance of polymer electrolyte fuel cell (PEFC) is affected by an interfacial property between a proton exchange membrane (PEM) and electrodes. Thus, to develop a well-laminated membrane electrode assembly (MEA), a hybrid PEM (FN) was fabricated by mixing a radiation grafted membrane (sulfonated FEP) with ionomer (Nafion® dispersion) which is applied to coat the interface of the PEM and electrodes. The obtained FN, sulfonated FEP and Nafion®112 were characterized in terms of water uptake, ion exchange capacity (IEC), polarization performance and electrochemical impedance. FN showed high IEC and water uptake, which would induce the highest ionic conductivity (IC) among tested PEMs. In terms of FN, the interface between the PEM and electrodes should have been improved because FN showed the lowest charge transfer resistance than other tested PEMs. The high IC and improved interface between the PEM and electrodes resulted in the best cell performance of FN in tested PEMs.

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