Current distribution and cathode flooding prediction in a PEM fuel cell

A. Jamekhorshid, G. Karimi, I. Noshadi

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Non-uniform current distribution in polymer electrolyte membrane fuel cells results in local over-heating, accelerated ageing, and lower power output than expected. This issue is very critical when fuel cell experiences water flooding. In this work, Two-dimensional partially flooded GDL models are proposed to study local current density distributions along flow fields over a wide range of cell operating conditions. The model results show a direct association between cathode inlet humidity increases and that of average current density but the system becomes more sensitive to flooding. The anode inlet relative humidity shows a similar effect. Operating the cell at higher temperatures would lead to higher average current densities and the chance of system being flooded is reduced. In addition, higher cathode stoichiometries prevent system flooding but the average current density remains almost constant. The higher anode stoichiometry leads to higher average current density and higher sensitivity to cathode flooding.

Original languageEnglish (US)
Pages (from-to)622-631
Number of pages10
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume42
Issue number4
DOIs
StatePublished - Jul 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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