Increasing the catalyst utilization is one way to improve the performance of a fuel cell. In this study, the hydrophobic pillared micro structures (HPMS) is used to increase the oxygen/ catalyst layer interface and thereby raise the performance by about 40%. By using the HPMS of a large size, the performance is improved by around 20%, which is just the same as the increment of the contact surface between oxygen and catalyst layer. By halving the loading of the small HPMS and thus increasing the contact surface between oxygen and the catalyst layer by half of the previous amount, the performance increase is also halved. These experimental results indicate that the main reaction zone is near the surface between oxygen and the catalyst layer. Consequently, there is no obvious decrement in the performance when the Pt loading of cathode is halved, just as the experimental results indicated. As a result, the utilization of catalyst is raised substantially.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-1206106-163924 |
| Date | 06 December 2006 |
| Creators | Chen, Ting-Huai |
| Contributors | Her, Innchyn, Wei, Peng-Sheng, Chen, Long-Jeng, Lee, Ming-San, none |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-1206106-163924 |
| Rights | not_available, Copyright information available at source archive |
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