膜極組是構成單電池的基本單元，也是燃料電池中發電的核心單元。膜極組發電效率優劣與否，扮演著單電池性能最為關鍵的因素。
本論文以製備MEA程序的流程，探討傳統法與轉印法之差異性。藉由微觀電極形態觀察、單電池輸出性能變化、內部阻抗分析、穩定性測試等特性分析，尋求對於兩種製程之MEA優點及缺點。
目前以135°C、15 kg/cm 、2.5 min轉印條件，於高溫（3M甲醇50°C）、自然進氣、常壓系統操作下，其最大輸出功率可達22.5 mW/cm ，與傳統法比較其數值相當接近。在高電流密度表現中，轉印法優於傳統法。顯示轉印法對於甲醇質傳有顯著效益，因此，其改善了質傳極化效應，增大其電流。
倘若單電池處於高溫狀態下操作，轉印法對於燃料質傳方面的確有幫助，能有效提升其性能。但是，轉印法在製備過程中，需花費更多時間製作MEA。將來在考量單電池操作環境、製作時間因素下，能當作重要參考的依據。

Membrane electrode assembly (MEA) is the foundation of the single cell as well as the core of the fuel cell when generating electricity. Its work efficiency is the key factor for single cell performance.
This study aims to understand the variation between the conventional method and the decal method during the MEA process. By observing the microstructure morphology of electrode and the performance of single cell, as well as analyzing internal resistance and its stabilization, the advantages and disadvantages of MEA in the two methods is analyzed.
The decal condition is 135°C, 15 kg/cm , 2.5 min at a high temperature (50°C 3M methanol), in air-breathing under atmosphere system. The maximum power density is approximately 22.5 mW/cm which is very close to the result of conventional method. The decal method is better than the conventional method particularly in regards to the high current density performance. It shows that there is an efficient influence of the decal method on the methanol mass transfer and it also improves its polarization and enlarges the current.
If the single cell is operated in the high temperature, the fuel mass transfer can be advanced in the decal method and its performance can be raised. However, in the manufacturing process, more time has to be spent when producing the MEA. This experiment can be used as a reference on the single cell operation environment and manufacturing time for future studies.

目錄 I
圖目錄 V
符號說明 VII
摘要 VIII
Abstract………………………………………………………………....IX
第一章 緒論 1
1.1前言 1
1.2燃料電池的種類 2
第二章 直接甲醇燃料電池基本架構 6
2.1前言 6
2.2 直接甲醇燃料電池之結構 7
2.2.1 質子交換膜 8
2.2.2 電催化觸媒 10
2.2.2.1 陰極觸媒材料 10
2.2.2.2 陽極觸媒材料 11
2.2.3 DMFC陽極 11
2.2.3.1 擴散層 11
2.2.3.2 催化層 12
2.2.4 DMFC陰極 13
2.2.4.1 擴散層 13
2.2.4.2 催化層 14
2.2.5 膜電極組製作方式 14
2.2.6 膜電極組(Membrane Electrode Assembly，MEA) 16
2.2.7 雙極板(Bipolar Plate) 16
2.3 研究動機與目的 19
2.4 文獻回顧 19
第三章 直接甲醇燃料電池(DMFC)工作原理 25
3.1 DMFC反應原理 25
3.2 DMFC 中的極化現象 27
3.3 燃料電池的極化曲線(POLARIZATION CURVE) 29
第四章. 實驗材料、實驗設備與方法 30
4.1實驗器材 30
4.1.1 實驗材料 30
4.1.2 實驗設備 31
4.2 MEA製作 33
4.2.1 傳統熱壓法 33
4.2.1.1 質子交換膜處理 34
4.2.1.2 MEA電極製作 34
4.2.2 轉印法 36
4.2.2.1 質子交換膜處理 36
4.2.2.2 MEA電極製作 36
4.3 MEA熱壓步驟 37
4.4 單電池 38
4.5 燃料與氧化劑 39
4.6 性能測試 39
4.7 電化學阻抗頻譜法之量測原理 39
第五章 實驗結果與分析 42
5.1 催化層中Nafion溶液含量對DMFC電池性能影響 42
5.2 傳統熱壓法與轉印法之影響探討 43
5.2.1 轉印法對於催化層厚度影響 43
5.2.2 常溫常壓之性能探討 44
5.2.3 高溫常壓之性能探討 46
5.2.4 轉印法壓製成MEA之壓力改變 47
5.2.5 轉印壓力之改變 47
5.3 傳統熱壓法與轉印法之內部阻抗分析 48
5.4 定電阻放電測試 49
第六章 結論與建議 51
6.1 結論 51
6.2 未來可進行之工作 52
參考文獻 53

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