Effect of flow field pattern and microporous layer on gas purge of a polymer electrolyte fuel cell

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

1 Citation (Scopus)

Abstract

The effect of flow field pattern and microporous layer (MPL) on the exhaust of the residual water at the flow channel, gas diffusion layer (GDL), and catalyst layer (CL) in the cathode of a polymer electrolyte fuel cell during gas purge after shutdown is separately studied for preventing freeze damage and efficient cold start below freezing point. The time variations of the high frequency and charge transfer resistances are obtained from electrochemical impedance spectroscopy to detect the drying of each component separately. This can be used to stop the purging appropriately to minimize energy consumption. An interdigitated type flow field drys the GDL substrate faster than a serpentine flow field. In addition, MPL drying process and its moisture retention effect on the drying of the CL and electrolyte membrane are observed. The serpentine flow field is shown to dry the MPL faster than the interdigitated type flow field.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 10, PEFC 10
Pages937-944
Number of pages8
Edition1 PART 1
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 1
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

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Nakajima, H., Kitahara, T., & Konomi, T. (2010). Effect of flow field pattern and microporous layer on gas purge of a polymer electrolyte fuel cell. In Polymer Electrolyte Fuel Cells 10, PEFC 10 (1 PART 1 ed., pp. 937-944). (ECS Transactions; Vol. 33, No. 1 PART 1). https://doi.org/10.1149/1.3484587