The impinging jet flow cell: a novel method for the study of PEM fuel cell material

Ulla Koponen, Terttu Peltonen, Mikael Bergelin, T. Mennola, Matti Valkiainen, J. Kaskimies

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Abstract

The electrocatalytic properties of a fuel cell catalyst ink in thin film form based on Vulcan XC72/Pt (30%) and Nafion was investigated by means of a flow cell of impinging jet type in flows of H2 and H2+CO dissolved in H2SO4 electrolyte. CO adlayers of different coverages were produced by a dosing procedure and their electrooxidative removal was studied. Ru was deposited onto the ink in situ by electroreduction and the basic voltammetry of such electrodes was investigated as well as the influence on CO adlayers and CO-tolerance. A Nafion film on top of the ink film influenced both the behaviour of CO adlayers and CO-tolerance. The feasibility of the flow cell for investigation and modification of ink electrodes were demonstrated.
Original languageEnglish
Pages (from-to)261-268
JournalJournal of Power Sources
Volume86
Issue number1-2
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed
Event6th Grove Fuel Cell Symposium - London, United Kingdom
Duration: 13 Sept 199916 Sept 1999

Keywords

  • Impinging jet
  • Flow cell
  • Fuel Cell catalyst
  • Ru-modification
  • CO-tolerance

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