In-plane gas permeability of proton exchange membrane fuel cell gas diffusion layers

A. Tamayol, M. Bahrami

Research output: Contribution to journalArticle

41 Scopus citations

Abstract

A new analytical approach is proposed for evaluating the in-plane permeability of gas diffusion layers (GDLs) of proton exchange membrane fuel cells. In this approach, the microstructure of carbon papers is modeled as a combination of equally-sized, equally-spaced fibers parallel and perpendicular to the flow direction. The permeability of the carbon paper is then estimated by a blend of the permeability of the two groups. Several blending techniques are investigated to find an optimum blend through comparisons with experimental data for GDLs. The proposed model captures the trends of experimental data over the entire range of GDL porosity. In addition, a compact relationship is reported that predicts the in-plane permeability of GDL as a function of porosity and the fiber diameter. A blending technique is also successfully adopted to report a closed-form relationship for in-plane permeability of three-directional fibrous materials.

Original languageEnglish (US)
Pages (from-to)3559-3564
Number of pages6
JournalJournal of Power Sources
Volume196
Issue number7
DOIs
StatePublished - Apr 1 2011

Keywords

  • Blending technique
  • Fibrous media
  • Gas diffusion layer
  • In-plane gas permeability
  • PEM fuel cell

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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