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
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

Publication series

NameECS Transactions
Number1 PART 2
Volume33
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

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

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'A cross-sectional observation of water behavior in the flow channel in PEFC'. Together they form a unique fingerprint.

  • 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., pp. 1457-1463). (ECS Transactions; Vol. 33, No. 1 PART 2). https://doi.org/10.1149/1.3484638