Fully Synthetic Approach toward Transition Metal-Nitrogen-Carbon Oxygen Reduction Electrocatalysts

Rohan Gokhale, Surendra Thapa, Kateryna Artyushkova, Ramesh Giri, Plamen Atanassov

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We report a nonpyrolytic chemical synthesis of model iron-nitrogen-carbon electrocatalysts for oxygen reduction reaction (ORR) to elucidate the role of Fe-N centers in the catalysis mechanism. The graphene-supported and unsupported catalysts were analyzed in detail by X-ray spectroscopy techniques. The electrochemical analysis was performed by linear sweep voltammetry and square wave voltammetry in 0.5 M H2SO4 and 0.1 M KOH electrolytes. In this article, with the use of model catalysts, we manifest and confirm the difference in the specific role of Fe-N active sites toward ORR in acidic and alkaline environments.

Original languageEnglish (US)
Pages (from-to)3802-3806
Number of pages5
JournalACS Applied Energy Materials
Volume1
Issue number8
DOIs
StatePublished - Aug 27 2018

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Chemistry

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