Study of Mass Transfer and Electrical Conduction in a PEM Fuel Cell 邱耀輝、鄭錕燦
E-mail: [email protected]
ABSTRACT
The present is to investigate the influence of gas diffusion layer parameters and flow channel plate parameters on mass transfer and electrical conduction. The parameters considered are thickness and porosity of gas diffusion layer, thickness of flow channel plate, and reactant flow contact area, contact pressure, etc. The results show that mass transfer is better when the reactant flow contact area increases. Both of ohmic resistance of gas diffusion layer and flow channel plate are very small in comparison to the ohmic resistance of PEM. When the contact pressure is less than 10 bar, the contact resistance between gas diffusion layer and flow channel plate is of the same order with the ohmic resistance within a PEM.
Keywords : PEM , Fuel Cell , Mass Transfer , Ohmic Resistance Contact Resistance Table of Contents
第一章緒論1 1.1 前言...1 1.2 研究動機與目的...2 1.3 燃料 電池簡介...2 1.3.1 發展歷史...2 1.3.2 燃料電池的基本介 紹...3 1.3.3 燃料電池的特色...4 1.3.4 燃料電池的種類與介 紹...4 1.3.4.1 鹼液燃料電池...5 1.3.4.2 磷酸鹽燃料電
池...6 1.3.4.3 熔融碳酸鹽燃料電池...6 1.3.4.4 固態氧化物燃料電 池...7 1.4 文獻回顧...7 第二章研究方
法...10 2.1 質子交換膜燃料電池的原理...10 2.2 質子交換膜燃料電 池的構造...13 2.3 相關理論的推導...15 2.3.1 氣體擴散層的質傳阻 抗...16 2.3.2 氣體擴散層的歐姆阻抗...18 2.3.3 流道板的歐姆阻 抗...19 2.3.4 氣體擴散層與流道板的接觸電阻...20 2.4 分析方
法...21 2.4.1 氣體擴散層的質傳分析...22 2.4.2 氣體擴散層的歐姆 電阻...24 2.4.3 流道板的歐姆電阻...25 第三章結果與討
論...27 3.1 氣體擴散層的質傳阻抗...27 3.1.1 質傳阻抗之經驗公 式...27 3.1.2 濃度等高線圖分析...30 3.1.3 質傳通量比與流道寬度比關 係...32 3.2 氣體擴散層的歐姆阻抗...35 3.3 流道板的歐姆阻
抗...36 3.4 氣體擴散層與流道板接觸電阻的結果探討...37 3.5 各種電阻大小之 比較...37 第四章結論與建議...39 參考文
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