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 language | English |
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Pages (from-to) | 253-258 |
Number of pages | 6 |
Journal | Journal of Colloid And Interface Science |
Volume | 300 |
Issue number | 1 |
DOIs | |
Publication status | Published - 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