Effect of anisotropic electrical resistivity of gas diffusion layers (GDLs) on current density and temperature distribution in a Polymer Electrolyte Membrane (PEM) fuel cell

Chaitanya J. Bapat, Stefan Thynell

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A two-dimensional two-phase model is used to analyze the effects of anisotropic electrical resistivity on current density and temperature distribution in a PEM fuel cell. It is observed that a higher in-plane electrical resistivity of the gas diffusion layer (GDL) adversely affects the current density in the region adjacent to the gas channel and generates slightly higher current densities in the region adjacent to the current collector. Also, in case of GDLs with high anisotropic thermal conductivity, the maximum and minimum temperatures in a cathode catalyst layer depend on the average current density and not the local current density.

Original languageEnglish (US)
Pages (from-to)428-432
Number of pages5
JournalJournal of Power Sources
Volume185
Issue number1
DOIs
StatePublished - Oct 15 2008

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gaseous diffusion
Diffusion in gases
Proton exchange membrane fuel cells (PEMFC)
fuel cells
density distribution
Temperature distribution
temperature distribution
Current density
electrolytes
current density
membranes
electrical resistivity
polymers
accumulators
high current
Thermal conductivity
Cathodes
thermal conductivity
Gases
cathodes

All Science Journal Classification (ASJC) codes

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

Cite this

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AB - A two-dimensional two-phase model is used to analyze the effects of anisotropic electrical resistivity on current density and temperature distribution in a PEM fuel cell. It is observed that a higher in-plane electrical resistivity of the gas diffusion layer (GDL) adversely affects the current density in the region adjacent to the gas channel and generates slightly higher current densities in the region adjacent to the current collector. Also, in case of GDLs with high anisotropic thermal conductivity, the maximum and minimum temperatures in a cathode catalyst layer depend on the average current density and not the local current density.

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