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

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DOIResolve DOI: http://doi.org/10.1149/1.3566065
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TypeArticle
Journal titleElectrochemical and Solid-State Letters
ISSN1099-0062
Volume14
Issue6
PagesB55B58
SubjectActive catalyst; Active site density; Carbon deposition; Carbon support; Cathode catalyst; Constant volumes; Kinetic currents; Nitrogen-carbon; Oxygen reduction catalysts; Precursor effect; Reaction vessel; Catalysts; Electrolytic reduction; Melamine formaldehyde resins; Oxygen; Pyrolysis; Nitrogen
AbstractMetal-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. © 2011 The Electrochemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271708
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Record identifier19e2ba69-6066-44d2-b660-ae582a0c002b
Record created2014-03-24
Record modified2016-05-09
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