Effect of the capillary forces in porous electrodes on the voltage-current characteristic of polymer electrolyte membrane fuel cells

V. E. Nakoryakov, V. G. Gasenko

Research output: Contribution to journalArticle

Abstract

An isothermal model of the cathode part of a polymer electrolyte membrane fuel cell is considered with allowance for capillary forces. Numerical and analytical solutions show that the capillary forces have a fundamental effect on the voltage-current characteristic because of an abrupt increase in the diffusion loss of oxygen through a thin liquid film emerging in nonwettable pores of the cathode in comparison with the ordinary diffusion in gas channels. The results obtained agree well with known experimental data.

Original languageEnglish
Pages (from-to)116-125
Number of pages10
JournalTheoretical Foundations of Chemical Engineering
Volume40
Issue number2
DOIs
Publication statusPublished - Mar 2006
Externally publishedYes

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Proton exchange membrane fuel cells (PEMFC)
Current voltage characteristics
Cathodes
Electrodes
Diffusion in gases
Liquid films
Oxygen
Thin films

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Effect of the capillary forces in porous electrodes on the voltage-current characteristic of polymer electrolyte membrane fuel cells. / Nakoryakov, V. E.; Gasenko, V. G.

In: Theoretical Foundations of Chemical Engineering, Vol. 40, No. 2, 03.2006, p. 116-125.

Research output: Contribution to journalArticle

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