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