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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/152

    Title: 觸媒層製程對高溫質子交換膜燃料電池性能影響之研究;Study on the Effect of Manufacturing Processes of the Catalyst Layer on the Performance of High Temperature Proton Exchange Membrane Fuel Cells
    Authors: 謝長佑;HSIEH, CHANG-YU
    Contributors: 機械工程系研究所
    Keywords: 高溫質子交換膜燃料電池;膜電極組;觸媒層;電化學阻抗譜;high-temperature proton exchange membrane fuel cells;membrane electrode assembly;catalyst layer;electrochemical impedance spectroscopy
    Date: 2018
    Issue Date: 2019-05-23 12:52:44 (UTC+8)
    Publisher: 機械工程系研究所
    Abstract: 高溫質子交換膜燃料電池有著高效率、高能量密度的優點,與低溫燃料電池相比有著無需加濕器且構造較為簡單的優點,高溫質子交換膜燃料電池膜的膜電極組性能受到許多因素影響,質子交換膜的種類、白金負載量、黏合劑種類、氣體擴散層的滲透性及孔隙率等。  本研究的重點是觸媒層的製造對高溫質子交換膜燃料電池性能的影響,包括觸媒的負載和粘合劑類型。另外,在膜和觸媒層之間引入碳黑緩衝層以提高觸媒的利用率。通過電化學阻抗譜研究碳黑緩衝層對高溫質子交換膜燃料電池性能的影響。 實驗結果表明,較厚的碳黑緩衝層增加了歐姆電阻,導致高溫質子交換膜燃料電池的性能降低。通過在碳黑緩衝層中添加稀釋磷酸,由於質子傳導性的提高,高溫質子交換膜燃料電池的性能得到改善。摻入20% 磷酸的0.1mg cm?2碳黑緩衝層在研究中提供最佳性能。
    High-temperature proton exchange membrane fuel cells (HT-PEMFCs) have the advantages of high reaction kinetics, simple configuration and easy water management when compared with low-temperature proton exchange membrane fuel cells. The performance of the membrane electrode assemblies of the HT-PEMFC is affected by many factors, including membrane type, catalyst loading, binder type, and permeability and porosity of the gas diffusion layers. This study focuses on the effect of manufacturing processes of the catalyst layer on the performance of a HT-PEMFC, including catalyst loading and binder type. In addition, a carbon layer is introduced between the membrane and the catalyst layer to improve the utilization of catalyst. The effect of the carbon layer on the performance of the HT-PEMFC is studied by electrochemical impedance spectroscopy.The experimental results show that a thicker carbon buffer layer increases the ohmic resistance, resulting in a lower performance of the HT-PEMFC. With the addition of dilute phosphoric acid in the carbon buffer layer, the performance of the HT-PEMFC is improved due to the improvement of proton conductivity. It is suggested that 0.1 mg cm?2 carbon buffer layer doped with 20% phosphoric acid provides the optimal performance in the study.
    Appears in Collections:[機械工程學系] 學位論文

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