Electroreduction of oxygen over iron macrocyclic catalysts for DMFC applications

Alexey Alexandrovich Serov, Myoungki Min, Geunseok Chai, Sangil Han, Sang Joon Seo, Younggil Park, Ho Kim, Chan Kwak

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

The performance of macrocyclic catalysts in oxygen reduction was investigated for a direct methanol fuel cell. The dependence of catalytic activity on different factors was determined for two classes of precursors; namely, iron porphyrin (Fe-PC) and iron phthalocyanine (Fe-TPP). It was found that there was an optimal heat-treating temperature for each precursor. Heat-treated Fe-TPP shows maximum activity at 750 °C, while the highest performance in the case of Fe-PC is observed at 500 °C. It was shown that oxygen reduction activity is affected by the number of nitrogen bonds formed with iron, particle size, and formation of carbon layers.

Original languageEnglish
Pages (from-to)1509-1516
Number of pages8
JournalJournal of Applied Electrochemistry
Volume39
Issue number9
DOIs
StatePublished - Sep 2009
Externally publishedYes

Keywords

  • Catalyst
  • Fuel cell
  • Iron
  • Oxygen reduction

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