Contact resistance between gas diffusion layer and catalyst layer of PEM fuel cell

Iwao Nitta*, Olli Himanen, Mikko Mikkola

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

76 Citations (Scopus)

Abstract

In this study, the electrical contact resistance between gas diffusion layer (GDL) and catalyst layer (CL) on an electrolyte membrane was experimentally evaluated as a function of compression. The contact resistances between the GDL and CL decreased nonlinearly as the GDL thickness decreased due to the compression pressure. The values of the contact resistance between the GDL and CL were found to be more than one order of magnitude larger than the contact resistance between the GDL and graphite, and even comparable to the ionic resistance of the membrane. Because of the large value and variation in contact resistance between the GDL and CL, severe current distribution may be created inside the cell. The results reported here should be highly useful in providing a more accurate picture of the transport phenomena in a fuel cell. (C) 2007 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)47-51
Number of pages5
JournalElectrochemistry Communications
Volume10
Issue number1
DOIs
Publication statusPublished - Jan 2008
MoE publication typeA1 Journal article-refereed

Keywords

  • inhomogeneous compression
  • contact resistance
  • gas diffusion layer
  • catalyst layer
  • PEM fuel cell
  • IMPEDANCE SPECTROSCOPY
  • WATER-UPTAKE
  • INHOMOGENEOUS COMPRESSION
  • PART I
  • MEMBRANE
  • CONDUCTIVITY
  • TRANSPORT
  • MODEL

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