A cross-sectional observation of water behavior in the flow channel in PEFC

Sang Kun Lee, Kohei Ito, Kazunari Sasaki

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

5 Citations (Scopus)

Abstract

Liquid water growth pattern in the gas flow channel in PEFC was visualized by using an ex-situ optical cross-sectional observation system developed. We investigated the impact of surface hydrophobicity of the GDL and channel on the liquid water growth pattern. The liquid water, which was emerged at 5 mm back from the gas outlet, was observed with spatial resolution of 20 μm by optimizing the optical system including CCD camera. Pressure drop through the channel was measured to evaluate the impact of water droplet on it. As a result, it is obtained that adhesion force formed in combination of hydrophobic GDL and hydrophilic channel sucked the water from GDL to channel corner, and suppressed the water contact with the GDL surface, and accelerated the water drainage, leading to prevent the water droplet growing in the channel.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 10, PEFC 10
Pages1457-1463
Number of pages7
Volume33
Edition1 PART 2
DOIs
Publication statusPublished - Dec 1 2010
Event10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, United States
Duration: Oct 10 2010Oct 15 2010

Other

Other10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting
CountryUnited States
CityLas Vegas, NV
Period10/10/1010/15/10

Fingerprint

Channel flow
Water
Liquids
Hydrophobicity
CCD cameras
Optical systems
Drainage
Pressure drop
Flow of gases
Adhesion
Gases

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Lee, S. K., Ito, K., & Sasaki, K. (2010). A cross-sectional observation of water behavior in the flow channel in PEFC. In Polymer Electrolyte Fuel Cells 10, PEFC 10 (1 PART 2 ed., Vol. 33, pp. 1457-1463) https://doi.org/10.1149/1.3484638

A cross-sectional observation of water behavior in the flow channel in PEFC. / Lee, Sang Kun; Ito, Kohei; Sasaki, Kazunari.

Polymer Electrolyte Fuel Cells 10, PEFC 10. Vol. 33 1 PART 2. ed. 2010. p. 1457-1463.

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

Lee, SK, Ito, K & Sasaki, K 2010, A cross-sectional observation of water behavior in the flow channel in PEFC. in Polymer Electrolyte Fuel Cells 10, PEFC 10. 1 PART 2 edn, vol. 33, pp. 1457-1463, 10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting, Las Vegas, NV, United States, 10/10/10. https://doi.org/10.1149/1.3484638
Lee SK, Ito K, Sasaki K. A cross-sectional observation of water behavior in the flow channel in PEFC. In Polymer Electrolyte Fuel Cells 10, PEFC 10. 1 PART 2 ed. Vol. 33. 2010. p. 1457-1463 https://doi.org/10.1149/1.3484638
Lee, Sang Kun ; Ito, Kohei ; Sasaki, Kazunari. / A cross-sectional observation of water behavior in the flow channel in PEFC. Polymer Electrolyte Fuel Cells 10, PEFC 10. Vol. 33 1 PART 2. ed. 2010. pp. 1457-1463
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