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 language | English |
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Pages (from-to) | 1509-1516 |
Number of pages | 8 |
Journal | Journal of Applied Electrochemistry |
Volume | 39 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2009 |
Externally published | Yes |
Keywords
- Catalyst
- Fuel cell
- Iron
- Oxygen reduction