微孔層碳粉種類與含量變化對高溫型PEM燃料電池性能影響測試分析

Effects of microporous layer with different types of carbon black and carbon loadings on the performance of a PBI-based high temperature PEM fuel cell

王建棟(Jian-Dong Wang)

指導教授 ： 張敏興

大同大學/工程學院/機械工程學系所/碩士(2012年)

摘要

本研究主要探討高溫型質子交換薄膜燃料電池微孔層最佳製作參數與碳粉種類的效應。實驗過程中，固定操作條件為電池溫度180℃，微孔層PTFE含量40％，Pt觸媒含量1 mg/cm2，陰極空氣流量350 sccm，陽極氫氣流量150 sccm，氣體相對濕度大於90 %，配合燃料電池測試機台及恆電位儀進行極化曲線測量和電化學阻抗頻譜分析(EIS)。
本研究首先改變微孔層中碳粉荷載量進行測量，結果顯示，當碳粉荷載量為1 mg/cm2時，燃料電池具有最佳的性能。接著，在相同碳粉荷載量下使用Acetylene Black碳粉(AB)和Black Pearls 2000碳粉(BP)兩種不同種類碳粉進行測量，結果發現使用Acetylene Black碳粉的電池具有較佳的性能。最後，在相同荷載量下，使用不同Acetylene Black碳粉和Black Pearls 2000碳粉比例的複合碳粉進行測量，結果顯示，當電池使用AB/BP複合碳粉比例為9:1時，燃料電池具有最佳的電池性能，且擁有最低的電池阻抗。

關鍵字

高溫型質子交換膜燃料電池 ； 微孔層製備 ； 複合碳粉

並列摘要

This study focused on the microporous layer in a high temperature proton exchange membrane fuel cell. The effects of the type of carbon black and the amount of carbon loading are analyzed experimentally. The operating conditions for the fuel cell are fixed at temperature 180℃ with PTFE content 40% in the microporous layer and Pt loading 1.0 mg/cm2 in the catalyst layer. The hydrogen and air flow rates are 150 and 350 sccm, respectively. Both reactant flow streams are fully humidified before entering the fuel cell. The variations of polarization curve are measured and the method of electrochemical impedance spectroscopy (EIS) is used to evaluate the fuel cell performance. The results show that the fuel cell has the optimal performance when the carbon loading is 1.0 mg/cm2 in the microporous layer. Three different kinds of carbon black are considered: acetylene black (AB), Black Pearls 2000 (BP), and composite carbon black. For both acetylene black and Black Pearls 2000, the test results show that Acetylene Black gives better cell performance than that of Black Pearls 2000 when the carbon loading is the same in the microporous layer. With the same amount of carbon loading, the composite carbon black is used which is composed of acetylene black and Black Pearls 2000. Different ratios of both carbon blacks are considered in the measurements and the results show that when the AB/BP ratio is 9:1 in the composite black, the fuel cell has the best cell performance.

並列關鍵字

high temperature PEMFC ； microporous layer preparation ； composite carbon black

參考文獻

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