title: Preparation and characterization of long-lived anode catalyst for direct methanol fuel cells.
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.
authors.affiliation: Advanced Research Laboratory, Hitachi Ltd., 7-1-1 Omika-cho, Hitachi 319-1292, Japan.
authors.forename: Yuzuru
authors.initials: Y
authors.lastname: Shimazaki
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Sugimasa
authors.forename: Shinji
authors.initials: S
authors.lastname: Yamada
authors.forename: Takeyuki
authors.initials: T
authors.lastname: Itabashi
authors.forename: Takao
authors.initials: T
authors.lastname: Miwa
authors.forename: Mikio
authors.initials: M
authors.lastname: Konno