Investigation on water history using deuterium fuel cell

Koizumi, Satoshi; Putra, A.; Zhao, Y.; Noda, Yohei; Yamaguchi, Daisuke; Ueda, Satoru*; Gunji, Hiroyuki*; Eguchi, Mika*; Tsutsumi, Yasuyuki*

In order to investigate water history during fuel cell operation, we employed deuterated gas (D $_{2}$ ) as a fuel (deuterium fuel cell). With exchange of H $_{2}$ and D $_{2}$ , we aim to perform a contrast variation as for polyelectrolyte film (Nafion). When D $_{2}$ gas is used as a fuel, D $_{2}$ O is produced at the cathode and diffuses back to the film. Then the film, originally swollen by H $_{2}$ O, exhibits change of coherent scattering contrast. By changing a fuel gas from H $_{2}$ to D $_{2}$ , 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 (H $_{2}$ O/D $_{2}$ O) in the ion channel, we could determine the water ration swelling a membrane.

Language	:	Japanese
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Meeting title	:	第61回高分子学会年次大会
Held date	:	2012/05
Location (city)	:	横浜
Location (country)	:	日本
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Keywords	:	no keyword
Research Facility	:	JRR-3実験利用棟(第2棟)
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Cooperating Institute	:	新エネルギー・産業技術総合開発機構

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Registration No. : BB20120471
JAEA Abstracts No. :
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