Demonstration of water management role of microporous layer by similarity model experiments

Jung Ho Kang, Kyu Jin Lee, Seung-Ho Yu, Jin Hyun Nam, Charn Jung Kim

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The water management role of a microporous layer (MPL) in a polymer electrolyte membrane fuel cell (PEMFC) is demonstrated experimentally by visualizing the drainage behaviors of a non-wetting fluid through multiple porous layers. An intermediate layer inserted between a fine layer and a coarse layer is observed to reduce the number of (the non-wetting fluid) breakthrough sites towards the coarse layer by merging many transport paths. Then, the reduced number of the breakthrough sites decreases the non-wetting fluid saturation in the coarse layer by minimizing capillary fingering process. These results clearly demonstrate the water management role of an MPL: An MPL reduces the liquid water breakthrough into a gas diffusion layer (GDL) by merging many paths from a catalyst layer (CL), and thereby reduces the liquid water saturation in the GDL.

Original languageEnglish
Pages (from-to)4264-4269
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume35
Issue number9
DOIs
Publication statusPublished - 2010 May 1
Externally publishedYes

Fingerprint

water management
Water management
Demonstrations
Diffusion in gases
Merging
Fluids
Experiments
Liquids
Proton exchange membrane fuel cells (PEMFC)
Drainage
Water
Catalysts
gaseous diffusion
fluids
saturation
liquids
drainage
water
fuel cells

Keywords

  • Flow visualization
  • Invasion-percolation
  • Liquid water breakthrough
  • Microporous layer
  • Similarity model experiment
  • Water management

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Demonstration of water management role of microporous layer by similarity model experiments. / Kang, Jung Ho; Lee, Kyu Jin; Yu, Seung-Ho; Nam, Jin Hyun; Kim, Charn Jung.

In: International Journal of Hydrogen Energy, Vol. 35, No. 9, 01.05.2010, p. 4264-4269.

Research output: Contribution to journalArticle

Kang, Jung Ho ; Lee, Kyu Jin ; Yu, Seung-Ho ; Nam, Jin Hyun ; Kim, Charn Jung. / Demonstration of water management role of microporous layer by similarity model experiments. In: International Journal of Hydrogen Energy. 2010 ; Vol. 35, No. 9. pp. 4264-4269.
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