Bipolar plates used in a PEM fuel cell must have high electric conductivity, good mechanical and chemical stability, low gas permeability, and low cost. For portable applications, lightweight and low volume should also be considered. Our laboratory has developed a new heterogeneous composite bipolar plate. Which has many advantages, such as low contact resistance, good chemical stability, low cost, lightweight and high performance.
Since automation is the key to low cost, this research is to develop the automatic fabrication process of the new plate. The process involves mainly the making of carbon fiber bunches by sticking the central portion of the carbon fiber together with glue but leaving both ends free. Secondly, use injection molding to form the plastic main body with all the carbon fiber bunches. In order to shorten the developing time, we divide the process into four parts: (1) the unfolding of carbon fiber (2) the automation of gluing (3) harden and cutting to sizes (4) Injection molding of bipolar plates.
This thesis has completed the study of the first three parts of the manufacturing processes. We have compared the contact resistances between our product and the previously handmade ones and found that the results are satisfactory.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0824105-172421 |
| Date | 24 August 2005 |
| Creators | Liou, Jhih-hong |
| Contributors | Ming-san Lee, Long-jeng Chen, Chin-chia Su |
| 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-0824105-172421 |
| Rights | campus_withheld, Copyright information available at source archive |
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