Development of a novel hydrophobic/hydrophilic double micro porous layer for use in a cathode gas diffusion layer in PEMFC

Jeong Hwan Chun, Ki Tae Park, Dong Hyun Jo, Ji Young Lee, Sang Gon Kim, Sun Hee Park, Eun Sook Lee, Jy Young Jyoung, Sung Hyun Kim

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

In this study, a gas diffusion layer (GDL) was modified to improve the water management ability of a proton exchange membrane fuel cell (PEMFC). We developed a novel hydrophobic/hydrophilic double micro porous layer (MPL) that was coated on a gas diffusion backing layer (GDBL). The water management properties, vapor and water permeability, of the GDL were measured and the performance of single cells was evaluated under two different humidification conditions, R.H. 100% and 50%. The modified GDL, which contained a hydrophilic MPL in the middle of the GDL and a hydrophobic MPL on the surface, performed better than the conventional GDL, which contained only a single hydrophobic MPL, regardless of humidity, where the performance of the single cell was significantly improved under the low humidification condition. The hydrophilic MPL, which was in the middle of the modified GDL, was shown to act as an internal humidifier due to its water absorption ability as assessed by measuring the vapor and water permeability of this layer.

Original languageEnglish
Pages (from-to)8422-8428
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number14
DOIs
Publication statusPublished - 2011 Jul

Keywords

  • Gas diffusion layer (GDL)
  • Hydrophobic/hydrophilic double layer
  • Micro porous layer (MPL)
  • Polymer electrolyte membrane fuel cell (PEMFC)

ASJC Scopus subject areas

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

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