Preparation and electrochemical activities of Pt-Ti alloy PEFC electrocatalysts

Y. Kawasoe, S. Tanaka, T. Kuroki, H. Kusaba, Kohei Ito, Y. Teraoka, Kazunari 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
JournalJournal of the Electrochemical Society
Volume154
Issue number9
DOIs
Publication statusPublished - Aug 6 2007

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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
  • Condensed Matter Physics
  • 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, Kohei; Teraoka, Y.; Sasaki, Kazunari.

In: Journal of the Electrochemical Society, Vol. 154, No. 9, 06.08.2007.

Research output: Contribution to journalArticle

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AU - Tanaka, S.

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AU - Teraoka, Y.

AU - Sasaki, Kazunari

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