The structure-dependent enhancement of the oxygen reduction reaction performance of Co-based low Pt catalysts through Au addition

Zi Jun Lin, Tsung Fu Chou, Chen Wei Liu, Po Hsiang Huang, Yao Zhang Guo, Jeng Han Wang, Kuan Wen Wang

Research output: Contribution to journalArticle

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Abstract

In this study, we have investigated the oxygen reduction reaction (ORR) activity and durability of Co-based catalysts mechanistically. CoPt/C catalysts with a Pt loading of 7 wt% and Au modification have been prepared and shown excellent ORR performance. The various as-prepared CoPt/C and CoPtAu/C catalysts have about 2.6-9.2 times higher mass activity than commercial Pt/C. The mechanistic insight obtained by density functional theory calculations has shown that the enhanced activity is attributable to the fact that Co-based catalysts can easily dissociate surface O2∗ without the high-barrier protonation step and efficiently remove the dissociated O∗. The improved stability, 1000th decay = 14.6%, corresponds to the fact that the core Au can resist the shrinkage of surface Pt during the accelerated durability test.

Original languageEnglish
Pages (from-to)11023-11029
Number of pages7
JournalJournal of Materials Chemistry A
Volume4
Issue number28
DOIs
Publication statusPublished - 2016 Jan 1

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Oxygen
Catalysts
Durability
Protonation
Density functional theory

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

The structure-dependent enhancement of the oxygen reduction reaction performance of Co-based low Pt catalysts through Au addition. / Lin, Zi Jun; Chou, Tsung Fu; Liu, Chen Wei; Huang, Po Hsiang; Guo, Yao Zhang; Wang, Jeng Han; Wang, Kuan Wen.

In: Journal of Materials Chemistry A, Vol. 4, No. 28, 01.01.2016, p. 11023-11029.

Research output: Contribution to journalArticle

Lin, Zi Jun ; Chou, Tsung Fu ; Liu, Chen Wei ; Huang, Po Hsiang ; Guo, Yao Zhang ; Wang, Jeng Han ; Wang, Kuan Wen. / The structure-dependent enhancement of the oxygen reduction reaction performance of Co-based low Pt catalysts through Au addition. In: Journal of Materials Chemistry A. 2016 ; Vol. 4, No. 28. pp. 11023-11029.
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AU - Wang, Jeng Han

AU - Wang, Kuan Wen

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