A parametric study of the cathode catalyst layer of PEM fuel cells using a pseudo-homogeneous model

L. You, Hongtan Liu

Research output: Contribution to journalArticle

87 Citations (Scopus)

Abstract

A pseudo-homogeneous model for the cathode catalyst layer performance in PEM fuel cells is derived from a basic mass-current balance by the control volume approach. The model considers kinetics of oxygen reduction at the catalyst/electrolyte interface, proton transport through the polymer electrolyte and oxygen diffusion through porous media. The governing equations, a two-point boundary problem, are solved using a relaxation method. The numerical results compare well with our experimental data. Using the model, influences of various parameters such as overpotential, proton conductivity, catalyst layer porosity, and catalyst surface area on the performance of catalyst layer are quantitatively studied. Based on these results, cathode catalyst layer design parameters can be optimized for specified working conditions.

Original languageEnglish
Pages (from-to)991-999
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume26
Issue number9
DOIs
StatePublished - Sep 1 2001

Fingerprint

fuel cells
Fuel cells
Cathodes
cathodes
catalysts
Catalysts
Electrolytes
electrolytes
Oxygen
Proton conductivity
protons
oxygen
Porous materials
Protons
Polymers
Porosity
porosity
conductivity
Kinetics
kinetics

Keywords

  • Catalyst layer
  • Fuel cells
  • Mathematical model
  • PEM
  • Proton exchange membrane

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

A parametric study of the cathode catalyst layer of PEM fuel cells using a pseudo-homogeneous model. / You, L.; Liu, Hongtan.

In: International Journal of Hydrogen Energy, Vol. 26, No. 9, 01.09.2001, p. 991-999.

Research output: Contribution to journalArticle

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