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Nakagiri, Toshio; Yamaki, Tetsuya; Asano, Masaharu; Tsutsumi, Yasuyuki*
Nihon Genshiryoku Gakkai Wabun Rombunshi, 7(1), p.58 - 65, 2008/03
Water electrolysis utilizing sulfur dioxide is attractive for low electricity consumption hydrogen production and has been investigated for the electrolytic and thermo-chemical hybrid hydrogen production process utilizing the heat generation of nuclear power plant. In this study, hydrogen production performance of water electrolysis cell utilizing sulfur dioxide gas and sulfur dioxide cross-over prevention performance of several polymer electrolytes were investigated experimentally.
Koizumi, Satoshi; Putra, A.; Zhao, Y.; Noda, Yohei; Yamaguchi, Daisuke; Ueda, Satoru*; Gunji, Hiroyuki*; Eguchi, Mika*; Tsutsumi, Yasuyuki*
no journal, ,
In order to investigate water history during fuel cell operation, we employed deuterated gas (D
) as a fuel (deuterium fuel cell). With exchange of H and D, we aim to perform a contrast variation as for polyelectrolyte film (Nafion). When D gas is used as a fuel, DO is produced at the cathode and diffuses back to the film. Then the film, originally swollen by HO, exhibits change of coherent scattering contrast. By changing a fuel gas from H to D, SANS quantitatively detected decrease of scattering intensity at scattering maximum originating from the ion-channel in the electrolyte. After quantitative analyses on scattering intensity, which is related to water ratio (HO/DO) in the ion channel, we could determine the water ration swelling a membrane.
