- 學位論文
質子交換膜燃料電池組裝與性能參數研究
Fabrication and Parametric Study of PEM Fuel Cell
摘要
質子交換膜燃料電池 (proton exchange membrane fuel cell) 是一種可將化學能直接轉換成為電能的一種發電系統，它具有能源轉換效率高，對環境調和性佳，體積小，質量小及操作溫度低等優點，適用於各種小型的移動式的電源供應系統。 本文主要針對質子交換膜燃料電池參數設定與組裝設計，分別探討兩組電池其反應面積皆為14cm×14cm的單電池(Single Cell)和電池堆(Short Stack)。 對單電池而言，探討其活化過程與活化過程後的整體參數的表現。包括不同的氣體加溼溫度、不同的操作壓力、不同的螺栓扭矩及不同的氧化劑等，有了以上單電池的參數數據，進而將4個單電池組裝成電池堆，由於組裝電池堆時必須加入冷卻水道，如此便增加其設計組裝的困難度，因此組裝完成後需進行研究電池推的特性。 對反應面積為14cm×14cm的單電池中，發現提升燃料氣體加溼溫度及增加螺栓扭矩，可對於燃料電池的性能有明顯的提升。 若以空氣為氧化劑時，在觸媒表面的氧分子數量減少，因此降低了燃料電池的整體性能。
並列摘要
PEM fuel cell is a device that could convert chemical energy to electrical energy directly. It has the advantages of high-energy conversion efficiency, high environmental compatibility, low weight, and low operating temperature, so it is suitable for every king of mobile power device. The object of this thesis is to fabricate the proton exchange membrane fuel cell and then test its performance where the active area of the membrane is 14cm×14cm single cell and 14cm×14cm short stack, respectively. PEM fuel cell assembled in bipolar plates, current collector plates and MEA (Membrane Electrode Assembly). The effects of different operating parameters on the performance of proton exchange membrane fuel cell have been studied experimentally using pure hydrogen on the anode side and pure oxygen or air on the cathode side. Experiments with different fuel cell different cathode and anode humidification temperatures, different operating pressures, different bolt torque and different oxidant of these parameters have been carried out. Above all, the experiment and analysis of a serial of parameter through, the result shall be the key factor which conduce and affect a character of PEM fuel cell. These results of experiment also provide a reference of fabricate short stack by them. The experimental results are presented in the form of polarization curves, which show the effects of the various operating parameters on the performance of the PEM fuel cell.