Preparation and electrochemical activities of Pt-Ti alloy PEFC electrocatalysts

Y. Kawasoe, S. Tanaka, T. Kuroki, H. Kusaba, K. Ito, Y. Teraoka, K. Sasaki

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Titanium is one of the most stable materials, remaining undissolved under strongly acidic polymer electrolyte fuel cell (PEFC) conditions. Nanocrystalline Pt-Ti alloy electrocatalysts with a catalyst grain size of several nanometers have been successfully prepared by the colloidal and sol-gel method, characterized by X-ray diffraction, field-emission scanning electron microscope, scanning transmission electron microscope, energy-dispersive X-ray analysis, and X-ray photoelectron spectroscopy. Electrochemical activities were evaluated by current-voltage characteristics measurements using membrane electrode assemblies for humidified H2 fuels with or without 100 ppm CO, cyclic voltammetry, and CO -stripping voltammetry in 0.1 M HClO4. Pt-Ti alloy electrocatalysts exhibited higher electrochemical performance than pure Pt catalyst, i.e., higher activity for oxygen reduction reactions and improved CO tolerance.

Original languageEnglish
Pages (from-to)B969-B975
JournalJournal of the Electrochemical Society
Volume154
Issue number9
DOIs
Publication statusPublished - Aug 6 2007

Fingerprint

electrocatalysts
Electrocatalysts
polymer blends
Carbon Monoxide
Electrolytes
fuel cells
Fuel cells
Polymers
Electron microscopes
electrolytes
Scanning
preparation
Catalysts
Energy dispersive X ray analysis
Voltammetry
Current voltage characteristics
electron microscopes
Field emission
Sol-gel process
Cyclic voltammetry

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

Preparation and electrochemical activities of Pt-Ti alloy PEFC electrocatalysts. / Kawasoe, Y.; Tanaka, S.; Kuroki, T.; Kusaba, H.; Ito, K.; Teraoka, Y.; Sasaki, K.

In: Journal of the Electrochemical Society, Vol. 154, No. 9, 06.08.2007, p. B969-B975.

Research output: Contribution to journalArticle

Kawasoe, Y. ; Tanaka, S. ; Kuroki, T. ; Kusaba, H. ; Ito, K. ; Teraoka, Y. ; Sasaki, K. / Preparation and electrochemical activities of Pt-Ti alloy PEFC electrocatalysts. In: Journal of the Electrochemical Society. 2007 ; Vol. 154, No. 9. pp. B969-B975.
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AU - Teraoka, Y.

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