Bonding state and defects of nitrogen-doped graphene in oxygen reduction reaction

Takeru Okada, Kumi Y. Inoue, Golap Kalita, Masaki Tanemura, Tomokazu Matsue, M. Meyyappan, Seiji Samukawa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Nitrogen-doped graphene is favored as a catalyst for oxygen reduction reaction (ORR) over rare metals. However, the effects of bonding state, nitrogen doped site and defects on catalytic conversion are still unclear. Here, we investigate oxygen reduction reaction using nitrogen-doped graphene with selective bonding state through pyridinic and graphitic nitrogen selective approaches. Both types show ORR activity and the catalytic reaction is clarified to be a four electron reaction path. Graphitic nitrogen with a low level of defects is found superior from the viewpoint of using single graphene sheet for the ORR application. Our investigation provides useful information for various applications using doped graphene.

Original languageEnglish
Pages (from-to)117-120
Number of pages4
JournalChemical Physics Letters
Volume665
DOIs
Publication statusPublished - 2016 Nov 16

Keywords

  • Graphene
  • Neutral beam
  • Nitrogen doping
  • Oxygen reduction reaction

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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