Promotion of PtRu/C anode catalysts for ethanol oxidation reaction by addition of Sn modifier

Yu Wei Chang, Chen Wei Liu, Yu Chen Wei, Kuan Wen Wang

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

PtRu/C anode electrocatalysts modified by Sn were prepared for ethanol oxidation reaction (EOR). Their phase structures, surface species, surface compositions, and EOR activities were characterized by XRD, XPS, temperature-programmed reduction (TPR), and CV, respectively. It has been found that in the PtRu/SnxC and PtSn/C alloy catalysts, some Sn alloyed with Pt to form Pt-Sn phase existed as the metallic state, however, the excess Sn existed as the amorphous SnO or crystalline SnO2. Surface analyses and electrochemical measurements suggest that the surface Ru and amorphous SnO instead of the crystalline SnO2 are important species for the promotion of EOR. As a result, compared with PtSn/C, the I06 was enhanced about 200% for the PtRu/C electrocatalyst with 10 wt% of Sn modification.

Original languageEnglish
Pages (from-to)2161-2164
Number of pages4
JournalElectrochemistry Communications
Volume11
Issue number11
DOIs
StatePublished - Nov 2009

Keywords

  • Ethanol oxidation reaction (EOR)
  • PtRu/C catalysts
  • Sn
  • SnO
  • Temperature-programmed reduction (TPR)

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