本論文主要在開發一個能夠穩定操作及長時間保存的可攜式直接甲醇燃料電池，將此電池組可實際應用在3C產品的驅動與充電。
過去電池使用完後必須將電池拆卸，取出MEA並放置在去離子水中保存，防止內部的甲醇會經由擴散膜crossover到陰極，導致觸媒毒化，但此保存方式非常不適於未來商品化。經由實驗發現，將保存時陰極覆蓋一層去離子水，可避免crossover到陰極的甲醇與大氣中的氧氣反應造成Pt毒化，性能將不在發生衰退。
為了能夠對3C產品進行充電，開發一組16-cell電池組，並設計一個被動式的燃料補充裝置，能夠因應電池組不同的電流下，補充所需要的燃料，使反應室甲醇濃度維持穩定，以便電池組能連續的穩定操作。
最後將此16-cell電池組與補充裝置結合，此電池組再電壓5V下可供應300mA的穩定電流，通過長時間操作的穩定性測試後，已實際對傳統及智慧型手機進行充電及驅動使用。研究開發的燃料電池預計不久將來有機會進入商品化階段。

A portable direct methanol fuel cell for stable operation and long-haul upkeep is developed. Further practical applications to electronic devices are expected.
In the past, the cells batteries are to be removed after use. The MEA will be placed and kept in deionized water to prevent the methanol from crossing over to cathode, leading to the catalyst poisoning. This method is not suitable for future commercial use. Through our experiment, with a layer of deionized water covered on the cathode, crossover to cathode is prohibited via aforementioned procedures, so that platinum won’t be poisoned through the reaction with oxygen. In so doing, the performance will not decay.
For the purpose of recharging electronic devices, we design a set of 16-cell stack and a passive fuel supplement devices. This is to supply the fuel needed under different currents, so as to maintain methanol concentration in the chamber. Thus continual and stable operation can be attained.
Lastly, in conjunction with the supplement device, 16-cell stacks can output stable current 300mA. Through stability tests for longer period of time, the practicable supply to the recharging and driving conventional phones or smartphones is achieved. The research of fuel cell is expected to be merchandized in the near future.

論文審定書 i
誌謝 ii
中文摘要 iii
英文摘要 iv
第一章 緒論 1
1.1前言 1
1.2 PEMFC簡介 2
1.3文獻回顧 4
1.4 研究目的 10
第二章 DMFC工作原理、理論分析與基本結構功能介紹 12
2.1 DMFC工作原理 12
2.2 DMFC之理論分析 14
2.2.1 DMFC之熱力分析 14
2.2.2 DMFC之電化學分析 15
2.3 DMFC基本結構功能介紹 16
2.3.1膜電極組(Membrane Electrode Assembly；MEA) 17
2.3.2電流收集器(Current Collector) 19
2.4 DMFC燃料的消耗 20
2.4.1 燃料的電化學消耗率 21
2.4.2 燃料的滲透蒸散率 22
第三章 DMFC的製作與實驗設備 24
3.1 MEA 24
3.2電流收集器 28
3. 3電池組框架 31
3. 4 燃料補充裝置 32
3.5陰極封蓋 34
3.6實驗設備 35
第四章 實驗方法與步驟 40
4.1實驗方法 40
4.2實驗步驟 40
4.2.1性能量測步驟 40
4.2.2補充裝置補充率實驗步驟 41
第五章 實驗結果與討論 43
5.1 單電池性能特性研究 44
6.2 保存方式對電池組長時間穩定性影響 45
5.2.1 保存時陽極區注滿去離子水及陰極表面覆蓋去離子水 46
5.2.2 保存時陽極區注滿甲醇水溶液但陰極區用去離子水覆蓋 46
5.2.3 陰極不同的乾燥方式對性能的引響 47
5.3 DMFC電池組甲醇與水的消耗 48
5.4 8-cell電池組性能特性研究 49
5.5 8-cell電池組連續補充燃料下對穩定性的影響 50
5.5.1 甲醇與水的補充 50
5.5.2 電壓與濃度連續操作下的穩定性 51
5.5.3電壓與溫度連續操作下的穩定性 52
5.6 8-cell電池組保存方式對穩定性影響 53
5.7 DMFC電池組應用研究 54
5.7.1 市電與DMFC電池組對傳統手機充電 54
5.7.2 市電與DMFC電池組對智慧型手機充電 55
第六章 結論與建議 57
參考文獻 59

參考文獻
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