Nitrogen precursor effects in iron-nitrogen-carbon oxygen reduction catalysts

Vijayadurga Nallathambi, Nathaniel Leonard, Ramanujam Kothandaraman, Scott Calabrese Barton

Research output: Contribution to journalArticle

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Abstract

Metal-nitrogen-carbon (MNC) cathode catalysts were synthesized using nitrogen precursors of varying NitrogenCarbon (NC) ratio by pyrolysis in a constant volume reaction vessel. Here, we demonstrate that increasing a key property, the NC ratio of the nitrogen precursor increased the accessible active site density by reducing carbon deposition in the pores of the carbon support during pyrolysis. The most active catalysts were obtained in this work using melamine, having a NC ratio of 2. Kinetic current density as high as 13 A cm-3 at 0.8 ViR-free and over 100 h of stable current at 0.5 V were observed with melamine based MNC catalysts.

LanguageEnglish (US)
JournalElectrochemical and Solid-State Letters
Volume14
Issue number6
DOIs
StatePublished - 2011

Profile

Nitrogen
Carbon
Iron
Oxygen
iron
nitrogen
catalysts
melamine
Catalysts
Melamine
carbon
oxygen
pyrolysis
Pyrolysis
Metals
Catalyst supports
metals
vessels
Cathodes
Current density

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Science(all)
  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Nitrogen precursor effects in iron-nitrogen-carbon oxygen reduction catalysts. / Nallathambi, Vijayadurga; Leonard, Nathaniel; Kothandaraman, Ramanujam; Barton, Scott Calabrese.

In: Electrochemical and Solid-State Letters, Vol. 14, No. 6, 2011.

Research output: Contribution to journalArticle

Nallathambi, Vijayadurga ; Leonard, Nathaniel ; Kothandaraman, Ramanujam ; Barton, Scott Calabrese. / Nitrogen precursor effects in iron-nitrogen-carbon oxygen reduction catalysts. In: Electrochemical and Solid-State Letters. 2011 ; Vol. 14, No. 6.
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