Abstract
The objectives of the thesis are to study and research the function of the fuel cell¡¦s bipolar plate which is vital to the Proton Exchange Membrane fuel cell¡Aand to create a new bipolar plate composed of nonhomogeneous plate and conductive object which conductive object are put through light weight plastic plate in consideration of low cost¡Bmini size¡Blight weight and high efficiency¡Atogether with a series of test for its capability.
Of the same section area¡Athe electric resistance of carbon fiber used in this experiment is lower than traditional graphite bipolar plate.According to related literature¡Athe resistant of the graphite bipolar plateis lower than the ones made of other materials or composite material.The carbon fiber is a suitable conductive object for bipolar plate consequently.
Without leakage¡Athe material are stand the differential pressure up to 0.5 kg/cm2 through the leakage/pressure tests.It is good enough in most of practical application.The strength of bipolar plate to resist the differential pressure is related to the plate strength and the strength of bond¡Ainterface between bond and plate or bond and carbon fiber.The proper bond is very important in this case.
The efficiency of fuel cell decreases rapidly in line with the increase of loading during the efficiency test of fuel cell and sudden drop portion situates at Ohm resistance domain.Other papers describe about the main factor of Ohm resistance domain is resistance loss¡Aparameter include conductive coefficient¡Barea of conductive material¡Blength of conductive material.The most different of experiment compare with previous is the area of conductive material.Therefore the area of conductive fiber in bipolar plate influences the efficiency of fuel cell a lot.
Through the research¡Athe availability of the new bipolar plate composed of nonhomogeneous plate and conductive object is proven and the cause of its defect in efficiency is identified for improvement in practical application.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0829103-154739 |
| Date | 29 August 2003 |
| Creators | Lin, Ming-Zin |
| Contributors | Long-Jeng Chen, Ru Yang, Chi-Hui Chien, Ming-San Lee, Shou-Shing Hsieh |
| 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-0829103-154739 |
| Rights | not_available, Copyright information available at source archive |
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