Estimation of flooding in PEMFC gas diffusion layer by differential pressure measurement

Kohei Ito, Hiroki Ohshima, Yoshiyuki Oie, Kensuke Ashikaga, Yasushi Kakimoto, Kazunari Sasaki, Tomohiko Miyazaki, Hiromitsu Masuda

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

The flooding, especially in gas diffusion layer (GDL), is one of the critical issues to put PEMFC to practical use. However, the experimental data of the flooding in GDL is so insufficient that the optimization design to solve the flooding problem in GDL has not established until now. In this study we show a method to estimate the water saturation, namely the water droplet occupation for unit volume in GDL. We fabricated a simple interdigitated cell where the supply gas is enforced to flow under rib. This structure made it possible to capture the water droplet in GDL with the measurement of differential pressure through the cell. We operated the cell and measured the differential pressure, and estimated the water saturation with assuming that the flow in GDL is Darcy flow and that the GDL can be treated as sphere packed bed. In addition to deferential pressure measurement, we measured the ionic resistance in polymer electrolyte membrane by AC impedance method. We evaluated the effect of the water saturation on the decrease of cell voltage.

本文言語英語
ホスト出版物のタイトルProceedings of 4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
出版ステータス出版済み - 12 1 2006
イベント4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006 - Irvine, CA, 米国
継続期間: 6 19 20066 21 2006

出版物シリーズ

名前Proceedings of 4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
2006

その他

その他4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
国/地域米国
CityIrvine, CA
Period6/19/066/21/06

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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