| Autor: |
Easton, Bradley, Bonakdarpour, Arman, Yang, Ruizhi, Stevens, David, O, David, Vernstrom, George, O, Denny, Schmoeckel, Alison, Wood, Tom, Atanasoski, Radoslav, Dahn, Jeff R. |
| Zdroj: |
ECS Transactions; October 2006, Vol. 3 Issue: 1 p241-248, 8p |
| Abstrakt: |
Vacuum deposition techniques were used to prepare composition spread samples of thin film Fe-C-N catalysts. After deposition, catalyst films were thermally treated to induce structural and composition changes. Catalytic activity was found to be at its largest when the films were annealed at ca. 800{degree sign}C. At this temperature, partial graphitization of the film occurred but it still contained a significant amount of nitrogen, which is required to have an active site. Above 800{degree sign}C, a significant quantity of Fe3C, which is inactive and not stable in acid, was formed. Single composition thin films were also prepared, thermally treated, and tested in a 50-cm2 fuel cell. After thermal treatment of the catalyst, the fuel cell performance was significantly improved. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
