The objective of the present study was to design and develop microfabrication process for a micro PEM (Proton Exchange Membrane) fuel cell structure, Both anode and cathode flow field plates with a cross section of 5 cm2 (22.5 mm 22.5 mm) and thickness (for a single cell) of about 700 £gm. A thickness of 30 nm Pt sputter loading deposited onto a Nafion 117 for MEA was made with both SEM and AFM characterization. The effect of different operating parameters on micro PEMFCs performances was experimentally studied for three different flow field configurations (interdigitated, mesh, and serpentine). The experiments with different cell operating temperatures, backpressures on the H2 /air flow channels as well as various combinations of these parameters have been conducted for three different flow geometries. The results are presented in the form of the polarization VI curves and PI curves under different operating conditions. A significant enhancement with three different type flow patterns for H2/air operation at 25¢J and 152 kPa on both electrodes was found. The possible transport mechanisms associated with the parametric effects were discussed. In addition, it was found that, among the three flow patterns considered, significant improvements can be reached with a specified flow geometry.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0707104-155754 |
| Date | 07 July 2004 |
| Creators | Kuo, Jenn-kun |
| Contributors | nono, none, 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-0707104-155754 |
| Rights | withheld, Copyright information available at source archive |
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