Preparation and characterization of long-lived anode catalyst for direct methanol fuel cells

Yuzuru Shimazaki, Yoshio Kobayashi, Masatoshi Sugimasa, Shinji Yamada, Takeyuki Itabashi, Takao Miwa, Mikio Konno

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Entry of direct methanol fuel cells into the market requires anode catalyst with stable activity. This paper presents a novel method for stabilizing the activity by immobilizing silica on the catalytic PtRu nanoparticles. Characterization was performed by STEM-EDX, XRD, and ICP. The silica-immobilized PtRu nanoparticles showed high and stable activity toward methanol oxidation. The activity was maintained for 1000 h in sulfuric acidic solution, while the activity of the catalyst with "bare" PtRu nanoparticles decayed after 100 h, showing high durability of the silica-immobilized PtRu nanoparticles catalyst in quasi-anodic acidic environment.

Original languageEnglish
Pages (from-to)253-258
Number of pages6
JournalJournal of Colloid And Interface Science
Volume300
Issue number1
DOIs
Publication statusPublished - 2006 Aug 1

Keywords

  • Anode catalyst
  • Direct methanol fuel cell
  • ICP
  • PtRu nanoparticle
  • STEM-EDX
  • Silica
  • XRD

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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