A Three-Dimensionally Structured Electrocatalyst: Cobalt-Embedded Nitrogen-Doped Carbon Nanotubes/Nitrogen-Doped Reduced Graphene Oxide Hybrid for Efficient Oxygen Reduction

Changting Wei, Hongjing Wang, Kamel Eid, Jeonghun Kim, Jung Ho Kim, Zeid Abdullah Alothman, Yusuke Yamauchi, Liang Wang

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

To develop low-cost and efficient oxygen reduction reaction (ORR) catalysts, a novel hybrid comprising cobalt-embedded nitrogen-doped carbon nanotubes and nitrogen-doped reduced graphene oxide (Co-NCNT/NrGO-800) was simply prepared by pyrolysis. The combination of nanotubes and graphene, and the efficient doping with cobalt and nitrogen, greatly contribute to the excellent ORR performance. This optimized Co-NCNT/NrGO catalyst exhibits a positive onset potential of 0.91 V and a half-wave potential of 0.82 V, combined with a relatively low peroxide yield, better durability, and better methanol tolerance than commercially available Pt/C, which makes it a promising candidate as a low-cost and effective non-precious-metal ORR catalyst.

Original languageEnglish
Pages (from-to)637-643
Number of pages7
JournalChemistry - A European Journal
Volume23
Issue number3
DOIs
Publication statusPublished - 2017 Jan 12

Bibliographical note

Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

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