Synthesis of hydrous ruthenium oxide supported platinum catalysts for direct methanol fuel cells

Zhenguo Chen, Xinping Qiu, Bin Lu, Shichao Zhang, Wentao Zhu, Liquan Chen

Research output: Contribution to journalArticle

80 Scopus citations

Abstract

Hydrous ruthenium oxide supported platinum catalysts, i.e., Pt/RuO 2 • xH2O, were synthesized by a feasible solution-phase method. X-ray diffraction (XRD) and transmission electron microscope (TEM) investigations showed that the uniform Pt nanoparticles were highly dispersed on the support materials. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) analyses revealed that RuO2 • xH2O has the structure of RuO2 • 0.25H 2O. This support material is believed to be more active than Ru 0 as part of Pt-Ru alloy catalysts. As proved by the cyclic voltammetry (CV) results, the Pt/RuO2 • xH2O electrode shows higher reactivity towards methanol than that of E-TEK Pt-Ru black electrode. This can be interpreted as that the remarkable boundaries of Pt nanoparticles to RuO2 • xH2O support provide active sites for complete methanol electro-oxidation.

Original languageEnglish (US)
Pages (from-to)593-596
Number of pages4
JournalElectrochemistry Communications
Volume7
Issue number6
DOIs
StatePublished - Jun 1 2005

Keywords

  • Direct methanol fuel cells
  • Methanol oxidation
  • Pt/RuO • xHO catalysts
  • Solution-phase synthesis method

ASJC Scopus subject areas

  • Electrochemistry

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