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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of 4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
Publication statusPublished - Dec 1 2006
Event4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006 - Irvine, CA, United States
Duration: Jun 19 2006Jun 21 2006

Publication series

NameProceedings of 4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
Volume2006

Other

Other4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
CountryUnited States
CityIrvine, CA
Period6/19/066/21/06

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Estimation of flooding in PEMFC gas diffusion layer by differential pressure measurement'. Together they form a unique fingerprint.

Cite this