Ordered silicon nanocones as a highly efficient platinum catalyst support for direct methanol fuel cells
| Autor: | Te Ming Chen, Kun-Lin Lin, Fu-Ming Pan, Jitendra N. Tiwari |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Platinum nanoparticles Electrocatalyst Catalysis chemistry.chemical_compound Methanol Electrical and Electronic Engineering Physical and Theoretical Chemistry Cyclic voltammetry Platinum Bifunctional Methanol fuel |
| Zdroj: | Journal of Power Sources. 182:510-514 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2008.04.058 |
| Popis: | Platinum nanoparticles were electrodeposited on ordered silicon nanocones (SNCs) and used as the catalyst for methanol electro-oxidation in direct methanol fuel cells (DMFCs). Because of uniform dispersion of Pt nanoparticles and the high surface area, the Pt-SNC electrode exhibited superior electrocatalytic properties toward the methanol electro-oxidation, with the onset potential of 0.08 V (vs. SCE). According to chronoamperometric analysis and CO stripping cyclic voltammetric (CV) study, the Pt/SNC electrode had a stable electro-oxidation activity with a very good CO tolerance. The Si surface oxide surrounding the Pt nanoparticles on the SNCs was suggested to play a key role in improving the CO tolerance via the bifunctional mechanism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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