Development of function-graded proton exchange membrane for PEFC using heavy ion beam irradiation

Fumiya Shiraki, Taeko Yoshikawa, Akihiro Oshima, Yuji Oshima, Yuya Takasawa, Naoyuki Fukutake, Tomoko Gowa Oyama, Tatsuya Urakawa, Hajime Fujita, Tomohiro Takahashi, Toshitaka Oka, Hisaaki Kudo, Takeshi Murakami, Yoshimasa Hama, Masakazu Washio

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    The graded energy deposition of heavy ion beam irradiation to polymeric materials was utilized to synthesize a novel proton exchange membrane (PEM) with the graded density of sulfonic acid groups toward the thickness direction. Stacked Poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP) films were irradiated by Xe54+ ion beam with the energy of 6 MeV/u under a vacuum condition. The induced trapped radicals by the irradiation were measured by electron spin resonance (ESR) spectroscopy. Irradiated films were grafted with styrene monomer and then sulfonated. X-ray photo-electron spectroscopy (XPS) spectra showed that the densities of sulfonic acid groups were controlled for injection "Surface" and transmit "Back" sides of the fabricated PEM. The membrane electrode assembly (MEA) fabricated by the function-graded PEM showed improved fuel cell performance in terms of voltage stability. It was expected that the function-graded PEM could control the graded concentration of sulfonic acid groups in PEM.

    Original languageEnglish
    Pages (from-to)1777-1781
    Number of pages5
    JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
    Volume269
    Issue number15
    DOIs
    Publication statusPublished - 2011 Aug 1

    Fingerprint

    Heavy ions
    Ion beams
    Ion exchange
    heavy ions
    Protons
    ion beams
    Irradiation
    membranes
    Membranes
    irradiation
    protons
    sulfonic acid
    Acids
    Electron spin resonance spectroscopy
    polytetrafluoroethylene
    Polytetrafluoroethylenes
    styrenes
    Voltage control
    fuel cells
    Fuel cells

    Keywords

    • Function-gradient
    • Heavy ion beam
    • PEFC
    • Proton exchange membrane
    • Radiation-induced grafting

    ASJC Scopus subject areas

    • Instrumentation
    • Nuclear and High Energy Physics

    Cite this

    Development of function-graded proton exchange membrane for PEFC using heavy ion beam irradiation. / Shiraki, Fumiya; Yoshikawa, Taeko; Oshima, Akihiro; Oshima, Yuji; Takasawa, Yuya; Fukutake, Naoyuki; Gowa Oyama, Tomoko; Urakawa, Tatsuya; Fujita, Hajime; Takahashi, Tomohiro; Oka, Toshitaka; Kudo, Hisaaki; Murakami, Takeshi; Hama, Yoshimasa; Washio, Masakazu.

    In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 269, No. 15, 01.08.2011, p. 1777-1781.

    Research output: Contribution to journalArticle

    Shiraki, F, Yoshikawa, T, Oshima, A, Oshima, Y, Takasawa, Y, Fukutake, N, Gowa Oyama, T, Urakawa, T, Fujita, H, Takahashi, T, Oka, T, Kudo, H, Murakami, T, Hama, Y & Washio, M 2011, 'Development of function-graded proton exchange membrane for PEFC using heavy ion beam irradiation', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 269, no. 15, pp. 1777-1781. https://doi.org/10.1016/j.nimb.2011.04.117
    Shiraki, Fumiya ; Yoshikawa, Taeko ; Oshima, Akihiro ; Oshima, Yuji ; Takasawa, Yuya ; Fukutake, Naoyuki ; Gowa Oyama, Tomoko ; Urakawa, Tatsuya ; Fujita, Hajime ; Takahashi, Tomohiro ; Oka, Toshitaka ; Kudo, Hisaaki ; Murakami, Takeshi ; Hama, Yoshimasa ; Washio, Masakazu. / Development of function-graded proton exchange membrane for PEFC using heavy ion beam irradiation. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2011 ; Vol. 269, No. 15. pp. 1777-1781.
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