A Pt-free catalyst for oxygen reduction reaction based on Fe-N multiwalled carbon nanotube composites

Belabbes Merzougui, Abdouelilah Hachimi, Akeem Akinpelu, Saheed Bukola, Minhua Shao

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46 Citations (Scopus)

Abstract

An iron-based non-precious metal (NPM) catalyst was synthesized by chemically coating a polymer containing nitrogen, such as polyaniline (PANI), on multiwalled carbon nanotubes (MWCNTs), followed by iron complexation and heat treatment in a decomposable source of nitrogen (ammonia) at high temperature. Its excellent activities for oxygen reduction reaction (ORR) in both acidic and alkaline media were confirmed by thin film rotating disk electrode technique. Also, durability test was performed in both media. After 20, 000 (0.65-1.0V) potential cycles, the half-wave potential decayed by only 40 mV in 0.1 M HClO4, while in 0.1 M KOH it gained 25 mV. In addition, no activity decay was observed by adding methanol in the acidic solution indicating its excellent tolerance to methanol oxidation.

Original languageEnglish
Pages (from-to)126-132
Number of pages7
JournalElectrochimica Acta
Volume107
DOIs
Publication statusPublished - 2013
Externally publishedYes

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Keywords

  • Durability
  • Methanol tolerance
  • Non precious metal catalysts
  • Oxygen reduction reaction

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

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