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研究生:楊宥杰
研究生(外文):You-Jie Yang
論文名稱:疏水性陽極流道寬度對於直接甲醇燃料電池性能影響之研究
論文名稱(外文):The Widths of the Hydrophobic Anode Channels on the Performance of the Direct Methanol Fuel Cells
指導教授:駱文傑駱文傑引用關係
指導教授(外文):Win-Jet Luo
學位類別:碩士
校院名稱:國立勤益科技大學
系所名稱:冷凍空調系
學門:工程學門
學類:其他工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:94
中文關鍵詞:直接甲醇燃料電池流道寬度聚二甲基矽氧烷
外文關鍵詞:Direct Methanol Fuel Cell (DMFC)Channel WidthPDMS
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在燃料電池的發電效能中,影響其效能表現的參數眾多,而本研究將設計出五種不同的流道寬度,配合不同的甲醇燃料進料溫度、流量以及濃度參數,進行其性能測試。在發電最佳效能的條件下,我們將設計出的流道總面積與反應區面積比率維持在50-60%,以CNC工具機加工出母模,再以PDMS(Polydimethylsiloxane)翻模製成陽極流道版。
本研究中比較在不同流道寬度的參數下,燃料電池進行電化學反應時,流道寬度0.8㎜在燃料進料溫度、流量較低時,發電效能表現較佳;但溫度流量參數條件上升時,流道寬度1.8㎜則有明顯的效能提升現象,其最高功率密度可達44 mW•cm-2。故流道寬度的設計考量,明顯的也是燃料電池效能中必須考慮的參數一環。

In this study, the material of polydimethylsiloxane (PDMS) with hydrophobic property was used to be the anode channels of the direct methanol fuel cells (DMFCs), In order to enhance the performance of the Direct Methanol Fuel Cell (DMFC), the product of CO2 bubble has to be efficiently removed from the anode channel during the electrochemical reaction. In this study, different anode channel widths of 2mm, 1.75mm, 1.5mm, 1.25mm, 1mm, 0.8mm and 0.6mm were fabricated used the PMMS material in order to investigate the effect of the anode channel width on the performance of the DMFCs. In this study, it was found that for the DMFCs with smaller anode channel width (0.8mm), the performance of the DMFCs can be enhanced under low operating temperature and low supplied fuel flow rate due to the uniform distributions of the fuel upon the anode collectors and longer retention periods of the fuel within the anode channels. However, while the width of the anode channel is less than 0.6mm, the hydro-resistant from the CO2 bubbles producing within the anode channels seriously increases, which hinders the fuel from moving into the anode channels through the wriggle pump. Consequently, the outputs of the DMFCs decrease obviously. Furthermore, under higher operating temperature and higher supplied fuel flow rate, the performance of the DMFCs with wider anode channel (1.8mm) is better than that with smaller anode channel.
中文摘要 I
Abstract Ⅱ
致謝 Ⅲ
目錄 Ⅳ
表目錄 Ⅵ
圖目錄 VIII
第一章 序論 1
1-1前言 1
1-2燃料電池發展過程 1
1-3 燃料電池特點 3
1-4 文獻回顧 9
1-5研究動機與目的 15
第二章 原理 17
2-1直接甲醇燃料電池 17
2-1-1 微型直接甲醇燃料電池 18
2-2甲醇電催化機制 20
2-3 極化反應 21
2-4 直接甲醇燃料電池構造 24
2-5影響直接甲醇燃料電池性能參數 21
第三章 研究方法與實驗設備 29
3-1 流道製作 29
3-2 實驗架構 35
3-2-1 燃料電池實驗步驟 37
3-3 設備介紹 40
第四章 實驗結果與討論 44
4-1 不同流道寬度下燃料溫度對直接甲醇燃料電池效能的影響 44
4-2 不同流道寬度下燃料流量對直接甲醇燃料電池效能的影響 47
4-3 不同流道寬度下燃料濃度對直接甲醇燃料電池效能的影響 48
第五章 結論 50




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