- 學位論文
高溫型質子交換膜燃料電池膜電極組內磷酸含量之研究
Research of the Phosphoric Acid Content in Membrane Electrode Assembly of ABPBI-based High Temperature PEM Fuel Cells
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摘要
本論文採用ABPBI膜材，以直接浸漬ABPBI膜材於85wt%磷酸中，量測不同浸酸時間與溫度之ABPBI膜材的導電度；並調配ABPBI與Pt/C觸媒漿料，製作觸媒層，完成自製膜電極組，並在電極中添加磷酸探討電極中磷酸含量對高溫型質子交換膜燃料電池電化學特性及電池性能的影響。 實驗結果顯示ABPBI膜材浸漬於85wt%、90℃的磷酸中九小時後在攝氏160度下有特定的導電度~ 33mS/cm。而以此條件的膜材進行實驗，以GDE的做法，陰陽極觸媒層內成分ABPBI 15wt%、Pt loading 0.75mg/cm2。量測結果顯示陰陽極進料分別為氧氣與氫氣，操作電壓為0.6V溫度160℃，電流密度可達260 mA/cm2。且定電流200mAcm-2放電六小時觀察閉路活化下不同電極含酸量的電壓分布情形與閉路活化前後的I-V曲線、AC-Impedance和CV。
並列摘要
In this study, the conductivities of commercial AB-PBI membranes doped with 85 wt% H3PO4 as well as different bathing timings and temperature are investigated. Also, the electrodes including AB-PBI polymer and Pt/C catalyst are investigated with different H3PO4 loading. The as-prepared electrodes and membranes are combined to manufacture membrane electrode assembly for high temperature proton exchange membrane fuel cell(HT-PEMFC) application. Effects of H3PO4 contents in membranes and electrodes are studied with material properties as well as fuel cell performance. The results reveal that AB-PBI membranes doped with 85 wt% H3PO4 at bathing temperature of 90 ℃ for nine hours lasting has highest conductivity 33 mS/cm. The membrane with highest conductivity is selected and combined with electrodes including 15 wt % AB-PBI and 0.75 mg/cm2 Pt loading. The current density, 260 mA/cm2 , of the as-prepared MEA at 0.6 V and 160℃ using oxygen and hydrogen as inlet is highest compared with other samples. Characterization of the electrodes before/after constant current 200 mA/cm2 discharging using I-V curves, AC impedances, and CV, to study voltage change with time of different H3PO4 loading.
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延伸閱讀
- 陳柄凱（2013）。磷酸鋰鐵粉末及前驅物結構分析暨電池元件改質研究〔碩士論文，國立清華大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0016-2511201311345853
- 郭俞麟、王復民、陳松郁、郭兆渝、黃立姍、周濬耆、盛信儒（2020）。常壓電漿技術表面改質磷酸鋰鐵電極於鋰離子電池效能提升之研究。真空科技，33(2)，38-51。https://www.airitilibrary.com/Article/Detail?DocID=1017091x-202006-202007230011-202007230011-38-51
- Hsu, C. C. (2017). 以非均質陰離子交換層塗佈之碳電極提升薄膜電容去離子技術之磷酸去除率 [master's thesis, National Taiwan University]. Airiti Library. https://doi.org/10.6342/NTU201702573
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- 梁家豪、陳震宇、楊添福、顏維謀（2018）。Study on Performance Degradation of High Temperature PEM Fuel Cells with Different Bipolar Plates。冷凍空調&能源科技，(107)，33-39。https://www.airitilibrary.com/Article/Detail?DocID=P20220314001-N202305310010-00003