Fe/N/S-doped mesoporous carbon nanostructures as electrocatalysts for oxygen reduction reaction in acid medium

Da Hee Kwak, Sang Beom Han, Young Woo Lee, Hyun Suk Park, In Ae Choi, Kyeng Bae Ma, Min Cheol Kim, Si Jin Kim, Do Hyoung Kim, Jung Inn Sohn, Kyung Won Park

Research output: Contribution to journalArticlepeer-review

181 Scopus citations

Abstract

Many alternatives to typical Pt-based catalysts have been developed to enhance oxygen reduction reaction (ORR) performance in acid medium due to their scarcity and high activation loss during the ORR. We synthesized mesoporous carbon nanostructures with multi-dopants such as iron, nitrogen, and sulfur as a cathode catalyst using the ordered silica templates and porphyrinic iron. The co-doped mesoporous carbon cathode catalysts exhibited a high ORR performance in an acid medium, i.e. complete ORR process and improved durability. The enhanced ORR properties of the catalysts might be ascribed to iron-containing catalytic active sites surrounded by nitrogen/sulfur species and a well-defined mesoporous carbon nanostructure.

Original languageEnglish
Pages (from-to)889-898
Number of pages10
JournalApplied Catalysis B: Environmental
Volume203
DOIs
StatePublished - 1 Apr 2017

Keywords

  • Iron
  • Mesoporous carbon
  • Nitrogen
  • Oxygen reduction reaction
  • Sulfur

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