Current distribution measurements in PEFC having net flow geometry

Matti Noponen, Jari Ihonen, Anders Lundblad, Göran Lindbergh

Research output: Contribution to journalArticleScientificpeer-review

45 Citations (Scopus)

Abstract

A measurement system for current distribution mapping for a PEFC has been developed. The segmented anode is constructed so as to have high thermal conductivity in order to prevent the formation of large temperature gradients between the electrodes. The construction is therefore feasible for use at high current densities. Both segmented and unsegmented gas diffusion layers are used. The effect of inlet humidification and gas composition at the cathode side is studied. In addition, two different flow geometries are studied. The results show that the measurement system is able to distinguish between current distribution originating from differences in proton conductivity, species concentration and gas diffusion layer properties.
Original languageEnglish
Pages (from-to)255 - 262
Number of pages8
JournalJournal of Applied Electrochemistry
Volume34
Issue number3
DOIs
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed

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Diffusion in gases
Proton conductivity
Geometry
Thermal gradients
Thermal conductivity
Anodes
Cathodes
Current density
Gases
Electrodes
Chemical analysis

Keywords

  • current distribution
  • PEMFC
  • PEM fuel cell
  • fuel cells
  • net flow geometry
  • segmented current collector

Cite this

Noponen, Matti ; Ihonen, Jari ; Lundblad, Anders ; Lindbergh, Göran. / Current distribution measurements in PEFC having net flow geometry. In: Journal of Applied Electrochemistry. 2004 ; Vol. 34, No. 3. pp. 255 - 262.
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Current distribution measurements in PEFC having net flow geometry. / Noponen, Matti; Ihonen, Jari; Lundblad, Anders; Lindbergh, Göran.

In: Journal of Applied Electrochemistry, Vol. 34, No. 3, 2004, p. 255 - 262.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Noponen, Matti

AU - Ihonen, Jari

AU - Lundblad, Anders

AU - Lindbergh, Göran

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N2 - A measurement system for current distribution mapping for a PEFC has been developed. The segmented anode is constructed so as to have high thermal conductivity in order to prevent the formation of large temperature gradients between the electrodes. The construction is therefore feasible for use at high current densities. Both segmented and unsegmented gas diffusion layers are used. The effect of inlet humidification and gas composition at the cathode side is studied. In addition, two different flow geometries are studied. The results show that the measurement system is able to distinguish between current distribution originating from differences in proton conductivity, species concentration and gas diffusion layer properties.

AB - A measurement system for current distribution mapping for a PEFC has been developed. The segmented anode is constructed so as to have high thermal conductivity in order to prevent the formation of large temperature gradients between the electrodes. The construction is therefore feasible for use at high current densities. Both segmented and unsegmented gas diffusion layers are used. The effect of inlet humidification and gas composition at the cathode side is studied. In addition, two different flow geometries are studied. The results show that the measurement system is able to distinguish between current distribution originating from differences in proton conductivity, species concentration and gas diffusion layer properties.

KW - current distribution

KW - PEMFC

KW - PEM fuel cell

KW - fuel cells

KW - net flow geometry

KW - segmented current collector

U2 - 10.1023/B:JACH.0000015616.92074.5d

DO - 10.1023/B:JACH.0000015616.92074.5d

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