Performance of membrane electrode assemblies based on proton exchange membranes prepared by pre-irradiation induced grafting

Jingye Li, Akio Matsuura, Tomoyuki Kakigi, Takaharu Miura, Akihiro Oshima, Masakazu Washio

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    Proton exchange membranes (PEMs) were prepared by pre-irradiation induced grafting of styrene (S) or styrene/divinylbenzene (S/DVB) into the radiation-crosslinked polytetrafluoroethylene (RX-PTFE) films and then sulfonated. The thicknesses of the obtained PEMs were lower than 20 μm and the ion exchange capacity (IEC) values were around 2 meq g-1. The surfaces of the PEMs and carbon electrodes were coated with Nafion® dispersion, and then membrane electrode assembles (MEAs) were prepared by hot-pressing them together. A MEA based on a Nafion® 112 membrane was also prepared under same procedure for comparison. The performances of the MEAs in a single cell were tested under different cell temperatures and humidifications. Electrochemical impedance spectra (EIS) were measured with ac frequencies which ranged from 100 kHz to 1 Hz at a dc density of 0.5 A cm-2. The obtained impedance curves in Nyquist representation were semicircular.

    Original languageEnglish
    Pages (from-to)99-105
    Number of pages7
    JournalJournal of Power Sources
    Volume161
    Issue number1
    DOIs
    Publication statusPublished - 2006 Oct 20

    Fingerprint

    assemblies
    Protons
    Ion exchange
    Irradiation
    membranes
    Membranes
    Electrodes
    irradiation
    electrodes
    protons
    divinyl benzene
    Styrene
    Polytetrafluoroethylene
    Polytetrafluoroethylenes
    styrenes
    impedance
    hot pressing
    polytetrafluoroethylene
    Hot pressing
    cells

    Keywords

    • Fuel cell
    • Membrane electrode assemble
    • Pre-irradiation induced grafting
    • Proton exchange membrane
    • Styrene/divinylbenzene

    ASJC Scopus subject areas

    • Electrochemistry
    • Fuel Technology
    • Materials Chemistry
    • Energy (miscellaneous)

    Cite this

    Performance of membrane electrode assemblies based on proton exchange membranes prepared by pre-irradiation induced grafting. / Li, Jingye; Matsuura, Akio; Kakigi, Tomoyuki; Miura, Takaharu; Oshima, Akihiro; Washio, Masakazu.

    In: Journal of Power Sources, Vol. 161, No. 1, 20.10.2006, p. 99-105.

    Research output: Contribution to journalArticle

    Li, Jingye ; Matsuura, Akio ; Kakigi, Tomoyuki ; Miura, Takaharu ; Oshima, Akihiro ; Washio, Masakazu. / Performance of membrane electrode assemblies based on proton exchange membranes prepared by pre-irradiation induced grafting. In: Journal of Power Sources. 2006 ; Vol. 161, No. 1. pp. 99-105.
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