| Summary: | 碩士 === 國立交通大學 === 機械工程系所 === 97 === ABSTRACT
This study fabricates micro PEMFC (Proton Exchange Membrane Fuel Cell) by using the MEMS (Micro Electro Mechanical Systems) technology. The active area of the membrane is 2cm×2cm. The study is divided into two categories; one is the parametric experimental investigation, and the other is the durability test. In experimental works, the parameters include reheat temperature, material of current collector slices, open ratio and different cathode gases, respectively.
According to the experimental results, both the conducting area and material of current collector slices have great influence on the performance of micro PEMFC, especially the former one. The increment of cell’s performance is finite by increasing the gas reheats temperature. The performance is better for open ratio 75% compared with 50% and 67%. The concentration polarization is improved by increasing the air flow rate at high current density and if the GDL diffusive capability in the latter cell could be promoted, the differences between these two cells’ performances would be reduced. Furthermore, the performance deviation at fixed operating voltage 0.4V is less than ±2.2%.
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