Effective permeability of gas diffusion layer in proton exchange membrane fuel cells

D. Shou, Y. Tang, L. Ye, Jintu Fan, F. Ding

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

In gas diffusion layers (GDLs) of proton exchange membrane fuel cells (PEMFCs), effective permeability is a key parameter to be determined and engineered. In this study, through-plane (TP) and in-plane (IP) flow behaviors of GDLs are investigated analytically based on a scaling estimate method. The TP permeability and IP permeability of unidirectional fibers are determined first, based on that the minimum distance and the inscribed radius between fibers are adopted as the characteristic lengths for normal and parallel flows, respectively. The permeabilities of two-dimensional (2D) and three-dimensional (3D) GDLs are estimated by a proper mixture of the local TP and IP permeabilities of fiber alignments. Themechanisticmodel agrees closely with experimental and numerical results over a wide porosity range. With the new model, the influences of porosity and fiber orientation on flow behaviors are analyzed. Copyright © 2013, Hydrogen Energy Publications, LLC.
Original languageEnglish
Pages (from-to)10519-10526
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number25
DOIs
Publication statusPublished - 21 Aug 2013

Keywords

  • Analytical model
  • Gas diffusion layers
  • In-plane permeability
  • Through-plane permeability

ASJC Scopus subject areas

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

Cite this