磷酸燃料電池（Phosphoric Acid Fuel Fell, PAEC）為高溫型燃料電池，其操作溫度介於150 ℃~220 ℃之間，相較於其他燃料電池，擁有對一氧化碳較高的容忍度、較無水管理問題等優點，並且本實驗室甲醇重組器的溫度也介於此範圍，適合整合成甲醇重組式燃料電池堆系統，因此選用此電池來做研究。
本研究探討磷酸燃料電池堆系統與雙極板之設計與優化。雙極流道板為燃料電池燃料輸入的通道，不同的幾何圖形設計會影響氣體濃度的分布、速度差與壓降，進而影響電池的效能。從模擬結果可得知，當雙極流道板採用對向流的方式設計、以及流道盡量採用90度和45度的彎折來降低流阻時，此流道擁有較低的壓降和速度差，同時也能讓膜電極組上的燃料壓力、速度、渦度等分佈較均勻，使燃料傳遞至膜電極組時濃度能夠更均勻的分佈。同時在實驗結果中，幸運草型流道相較於其他蛇紋型流道在單電池以及長效測試上擁有相對較高的效能與穩定性，當流量為1000 sccm時，擁有最高效能12.5 W。另外在流道放大設計中，因應甲醇重組式燃料電池堆系統欲放入圓型保溫桶，本研究將流道板與燃料電池模組改為圓形燃料電池，包含直徑5.17 cm和直徑14 cm兩種流道板，以及完整的模組。從模擬結果顯示，壓降與速度差與幸運草型流道相近，因此往後會使用此兩種設計來進行實驗操作。
在系統整合方面，甲醇重組式燃料電池堆系統中包含蒸發器、重組器、燃燒器、磷酸燃料電池、幫浦、管線等元件，本研究會將這些元件所散發與吸收的熱做計算並讓這些熱能夠做有效的處理，同時也將設計管線與整體系統等等，期望能達到1000 W高效能、輕重量、積體化之目標。

Phosphoric Acid Fuel Fell (PAEC) is a high-temperature fuel cell whose operating temperature is between 150 ℃ and 220 ℃. Compared with other fuel cells, its advantages have a higher tolerance to carbon monoxide and more simple water management. In addition, the temperature of the methanol-reformer in our laboratory is also within this range, which is suitable for integration into a system; thus, this research chooses PAFC for the experiment.
This research discusses the design and optimization of phosphoric acid fuel cell stack systems and bipolar plates. The bipolar plate is the entrance of gas in the fuel cell. Different designs will affect the gas concentration distribution, speed difference, and pressure drop, and then affect the performance of the battery. From the simulation results, it can be known that when the flow channel is designed with counter-flow, and the flow channel is bent at 90 degrees and 45 degrees as much as possible to reduce the flow resistance, the flow channel has a lower pressure drop and velocity difference, which makes the pressure drop, velocity difference, and vorticity more uniform on membrane electrode assembly (MEA), and allows the concentration of fuel to distribute more uniform when the fuel is delivered to the MEA. Also, in the experimental results, the clover-type flow channel has relatively higher performance and stability in a single cell and long-term testing than other serpentine flow channels. When the flow rate is 1000 sccm, it has the highest performance of 12.5 W. In addition, in the flow channel enlargement design, in response to the methanol recombination fuel cell stack system being put into a circular insulated barrel, this study changed the flow channel plate and fuel cell module to a circular fuel cell, including 5.17 cm and 14 cm diameter, and completely fuel cell modules. The simulation results show that the pressure drop and velocity difference is similar to that of the clover-type flow channel. Therefore, these two modules will be tested through the experiment in the future.
In terms of system integration, the methanol-reformed fuel cell stack system includes the evaporator, reformer, burner, phosphoric acid fuel cell, pump, pipeline, and so on. This study will calculate the heat emitted and absorbed by these components and let the heat can be effectively processed. Also, pipelines and overall systems will be designed. It is expected to achieve the target of a kW-level high-efficient lightweight integrated methanol-reformed fuel cell system.

摘要 I
Abstract II
致謝 IV
總目錄 V
表目錄 VIII
圖目錄 IX
第一章 緒論 1
1-1 前言 1
1-2 燃料電池簡介 1
1-3 燃料電池之種類及其原理 3
1-3-1 磷酸燃料電池（Phosphoric Acid Fuel Fell, PAFC） 3
1-3-2 質子交換膜燃料電池（Proton Exchange Membrane Fuel Cell, PEMFC） 4
1-3-3 直接甲醇燃料電池（Direct Methanol Fuel Cell, DMFC） 5
1-3-4 鹼性燃料電池（Alkaline Fuel Cell, AFC） 6
1-3-5 熔融碳酸鹽燃料電池（Molten Carbonate Fuel Cell, MCFC） 7
1-3-6 固體氧化物燃料電池（Solid Oxide Fuel Cell, SOFC） 7
1-4 研究動機 10
第二章 文獻回顧與儀器基本原理 11
2-1 燃料電池之電化學理論 11
2-1-1 電極之熱力學 11
2-1-2 電極之反應動力學 12
2-2 磷酸燃料電池基本構造 14
2-2-1 端板、集電板、氣密墊片與雙極板 14
2-2-2 氣體擴散層 15
2-2-3 觸媒層 16
2-2-4 質子交換膜 17
2-3 磷酸燃料電池放大與電池堆疊之研究 18
2-4 燃料電池系統整合之研究 20
2-5 儀器分析原理及操作 22
2-5-1 單電池測試（Single cell Test） 22
2-5-2 模擬軟體 ─ ANSYS Fluent 24
第三章 實驗方法 25
3-1 實驗藥品與設備 25
3-1-1 實驗藥品與材料 25
3-1-2 實驗設備 25
3-1-3 分析儀器 25
3-2 實驗流程 26
3-3 磷酸燃料電池製備與測試 27
3-3-1電極之製備 27
3-3-2 膜電極組之製備 28
3-3-3 單電池之製備 29
3-3-4 單電池測試 30
3-4 流道模擬測試 31
第四章 結果與討論 32
4-1 雙向流之雙極流道板 32
4-1-1 幸運草型雙極流道板之單電池測試與長效測試 34
4-1-2 幸運草型石墨雙極流道板與鈦六鋁四釩雙極流道板之比較 37
4-1-3 圓形模組之設計與模擬 38
4-2 燃料電池膜組放大之設計與模擬 48
4-3 甲醇重組式燃料電池堆系統之計算與設計 50
4-3-1 熱計算 51
4-3-2 整體系統內部元件與支架之設計 53
4-3-3 管線設計 55
4-3-4 整體系統設計 56
第五章 結論 58
第六章 未來展望 59
參考文獻 60

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