Enhanced oxygen reduction reaction activity of iron-containing nitrogen-doped carbon nanotubes for alkaline direct methanol fuel cell application

Sander Ratso, Ivar Kruusenberg, Ave Sarapuu, Protima Rauwel, Rando Saar, Urmas Joost, Jaan Aruväli, Petri Kanninen, Tanja Kallio, Kaido Tammeveski*

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    71 Citations (Scopus)

    Abstract

    Non-precious metal catalysts for electrochemical oxygen reduction reaction are synthesised by pyrolysis of multi-walled carbon nanotubes in the presence of nitrogen and iron precursors. For the physico-chemical characterisation of the catalysts transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy and X-ray diffraction are used. The electrocatalytic activity of the catalysts for oxygen reduction is studied in 0.1 M KOH solution using the rotating disk electrode method. The Fe-containing nitrogen-doped carbon nanotubes exhibit an enhanced electrocatalytic performance as compared to metal-free counterparts and their electrocatalytic activity is comparable to that of commercial Pt/C catalyst. Alkaline direct methanol fuel cell tests also show performance close to Pt/C. Thus, these materials can be considered as promising cathode catalysts for application in alkaline fuel cells.

    Original languageEnglish
    Pages (from-to)129-138
    Number of pages10
    JournalJournal of Power Sources
    Volume332
    DOIs
    Publication statusPublished - 15 Nov 2016
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Alkaline direct methanol fuel cell
    • Carbon nanotubes
    • Electrocatalysis
    • Nitrogen doping
    • Non-precious metal catalyst
    • Oxygen reduction

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