Fe-N-C electrocatalysts for oxygen reduction reaction synthesized by using aniline salt and Fe3+/H2O2 catalytic system

Saheed Bukola, Belabbes Merzougui, Akeem Akinpelu, Tahar Laoui, Mohamed N. Hedhili, Greg M. Swain, Minhua Shao

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Non-precious metal (NPM) catalysts are synthesized by polymerizing aniline salt using an aqueous Fe3+/H2O2 coupled catalytic system on a carbon matrix with a porous creating agent. The sulfur containing compunds such as ammonium peroxydisulfate, are eliminated in this method resulting in a much simpler process. The catalysts' porous structures are enhanced with ammonium carbonate as a sacrificial material that yields voids when decomposed during the heat treatment at 900 °C in N2 atmosphere. Two catalysts Fe-N-C/Vu and Fe-N-C/KB (Vu = Vulcan and KB = Ketjen black) were synthesized and characterized. Their oxygen reduction reaction (ORR) activities were investigated using a rotating ring-disk electrode (RRDE) in both 0.1 M KOH and 0.1 M HClO4. The catalysts show improved ORR activities close to that of Pt-based catalysts, low H2O2 formation and also demonstrated a remarkable tolerance towards methanol oxidation.

Original languageEnglish
Pages (from-to)809-818
Number of pages10
JournalElectrochimica Acta
Volume146
DOIs
Publication statusPublished - 2014

Fingerprint

Electrocatalysts
Aniline
Salts
Oxygen
Catalysts
Sulfur
Methanol
Carbonates
Catalyst activity
Carbon
Metals
Heat treatment
aniline
Oxidation
Electrodes

Keywords

  • Fuel cells
  • Methanol tolerance
  • Nitrogen doped carbon electrocatalysts
  • Non-precious metal catalysts
  • Porous structure

ASJC Scopus subject areas

  • Electrochemistry
  • Chemical Engineering(all)

Cite this

Fe-N-C electrocatalysts for oxygen reduction reaction synthesized by using aniline salt and Fe3+/H2O2 catalytic system. / Bukola, Saheed; Merzougui, Belabbes; Akinpelu, Akeem; Laoui, Tahar; Hedhili, Mohamed N.; Swain, Greg M.; Shao, Minhua.

In: Electrochimica Acta, Vol. 146, 2014, p. 809-818.

Research output: Contribution to journalArticle

Bukola, Saheed ; Merzougui, Belabbes ; Akinpelu, Akeem ; Laoui, Tahar ; Hedhili, Mohamed N. ; Swain, Greg M. ; Shao, Minhua. / Fe-N-C electrocatalysts for oxygen reduction reaction synthesized by using aniline salt and Fe3+/H2O2 catalytic system. In: Electrochimica Acta. 2014 ; Vol. 146. pp. 809-818.
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AU - Merzougui, Belabbes

AU - Akinpelu, Akeem

AU - Laoui, Tahar

AU - Hedhili, Mohamed N.

AU - Swain, Greg M.

AU - Shao, Minhua

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AB - Non-precious metal (NPM) catalysts are synthesized by polymerizing aniline salt using an aqueous Fe3+/H2O2 coupled catalytic system on a carbon matrix with a porous creating agent. The sulfur containing compunds such as ammonium peroxydisulfate, are eliminated in this method resulting in a much simpler process. The catalysts' porous structures are enhanced with ammonium carbonate as a sacrificial material that yields voids when decomposed during the heat treatment at 900 °C in N2 atmosphere. Two catalysts Fe-N-C/Vu and Fe-N-C/KB (Vu = Vulcan and KB = Ketjen black) were synthesized and characterized. Their oxygen reduction reaction (ORR) activities were investigated using a rotating ring-disk electrode (RRDE) in both 0.1 M KOH and 0.1 M HClO4. The catalysts show improved ORR activities close to that of Pt-based catalysts, low H2O2 formation and also demonstrated a remarkable tolerance towards methanol oxidation.

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KW - Nitrogen doped carbon electrocatalysts

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