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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳發林 | |
dc.contributor.author | Chih-Wei Tsai | en |
dc.contributor.author | 蔡之緯 | zh_TW |
dc.date.accessioned | 2021-06-08T04:22:39Z | - |
dc.date.copyright | 2010-07-15 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-07-02 | |
dc.identifier.citation | [1] U. Pasaogullari, C. Y Wang, “Two-phase transport and the role of micro-porous”, Electrochimica Acta 49 (2004) 4359-4369.
[2] U. Pasaogullari, C. Y. Wang, “Two-Phase Transport in Polymer Electrolyte Fuel Cells with Bilayer Cathode Gas Diffusion Media”, Journal of The Electrochemical Society 152 (2005) A1574-A1582. [3] A. Z. Weber, J. Newman, “Effects of Microporous Layers in Polymer Electrolyte Fuel Cells”, Journal of The Electrochemical Society 152 (2005) A677-A688. [4] J. H. Nam, M. Kaviany, “Effective diffusivity and water -saturation distribution in single and two-layer PEMFC diffusion medium”, International Journal of Heat and Mass Transfer 46 (2003) 4595-4611. [5] K. Kang, H. Ju, “Numerical modeling and analysis of micro-porous layer effects in polymerelectrolyte fuel cells”, Journal of Power Sources 194 (2009) 763-773. [6] H. Meng, “Multi-dimensional liquid water transport in the cathode of a PEM fuel cell with consideration of the micro-porous layer (MPL)”, International Journal of Hydrogen Energy 34 (2009) 5488-5497. [7] Z. Qi, A. Kaufman, “Improvement of water management by a microporous sublayer for PEM fuel cells”, Journal of Power Sources 109 (2002) 38-46. [8] H. Tang, S. Wang, M. Pan, R. Yuan, “Porosity-graded micro-porous layers for polymer electrolyte membrane fuel cells”, Journal of Power Sources 166 (2007) 41-46. [9] X. Wang, H. Zhang, J. Zhang, H. Xu, X. Zhu, J. Chen, B. Yi, “A bi-functional micro-porous layer with composite carbon black for PEM fuel cells”, Journal of Power Sources 162 (2006) 474-479. [10] G. G. Park, Y. J. Sohn, T. H. Yang, Y. G. Yoon, W. Y. Lee, C. S. Kim, “Effect of PTFE contents in the gas diffusion media on the performance of PEMFC”, Journal of Power Sources 131 (2004) 182-187. [11] Z.H. Wanga, C.Y. Wanga, K.S. Chen, “Two-phase flow and transport in the air cathode of proton exchange membrane fuel cells”, Journal of Power Sources 94 (2001) 40-50. [12] U. Pasaogullari, C. Y. Wang, “Liquid Water Transport in Gas Diffusion Layer of Polymer Electrolyte Fuel Cells”, Journal of The Electrochemical Society, 151 (2004) A399-A406. [13] S. Um, C.Y. Wang, “Three dimensional analysis of transport and reaction in proton exchange membrane fuel cells”, Proceedings of the ASME Fuel Cell Division 366-1 (2000) 19-25. [14] N. Djilali, D. Lu, “Influence of heat transfer on gas and water transport in fuel cells”, Int. J. Therm. Sci. 41 (2002) 29-40. [15] L. You, H. Liu, “A two-phase flow and transport model for PEM fuel cells”, Journal of Power Sources 155 (2006) 219-230. [16] J. S. Yi, T. V. Nguyen, “Multicomponent Transport in Porous Electrodes of Proton Exchange Membrane Fuel Cells Using the Interdigitated Gas Distributors”, Journal of The Electrochemical Society 146 (1999) 38-45. [17] G. He, Z. Zhao, P. Ming, A. Abuliti, C. Yin, “A fractal model for predicting permeability and liquid water relative permeability in the gas diffusion layer (GDL) of PEMFCs”, Journal of Power Sources 163 (2007) 846-852. [18] D. Natarajan, T. V. Nguyen, “A Two-Dimensional, Two-Phase, Multicomponent, Transient Model for the Cathode of a Proton Exchange Membrane Fuel Cell Using Conventional Gas Distributors”, Journal of The Electrochemical Society 148 (2001) A1324-A1335. [19] W. Sun, B. A. Peppley, K. Karan, “Modeling the influence of GDL and flow-field plate parameters on the reaction distribution in the PEMFC cathode catalyst layer”, Journal of Power Sources 144 (2005) 42-53. [20] K. W. Lum, J. J. McGuirk, “2D and 3D Modeling of a PEMFC Cathode with Interdigitated Gas Distributors”, Journal of The Electrochemical Society 152 (2005) A811-A817. [21] M. H. Chang, F. L. Chen, H. S. Teng, “Effects of two-phase transport in the cathode gas diffusion layer on the performance of a PEMFC”, Journal of Power Sources 160 (2006) 268-276. [22] W. He, J. S. Yi, T. V. Nguyen, “Two-Phase Flow Model of the Cathode of PEM Fuel Cells Using Interdigitated Flow Fields”, AIChE Journal 46 (2000) 2053-2064. [23] L. Giorgi, E. Antolini, A. Pozio, E. Passalacqua, “Influence of the PTFE content in the diffusion layer of low-Pt loading electrodes for polymer electrolyte fuel cells”, Electrochimica Acta 43 (1998) 3675-3680. [24] M. Prasanna, H. Y. Ha, E. A. Cho, S. A. Hong, I. H. Oh, “Influence of cathode gas diffusion media on the performance of the PEMFCs”, Journal of Power Sources 131 (2004) 147-154. [25] R. O'Hayre, S. W. Cha, W. Colella, F. B. Prinz, “Fuel Cell Fundamentals”, John Wiley & Sons (2006) [26] 黃鎮江, 燃料電池, 全華科技圖書股份有限公司 (2003) | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22623 | - |
dc.description.abstract | 本論文以數值模擬軟體COMSOL Multiphysics建立二維兩相流陰極側質子交換膜燃料電池模型。模型元件包含氣體擴散層及雙側微孔層,並以連續方程式、動量方程式及物種守恆方程式等理論分析研究燃料電池。
當燃料電池操作於高電流密度時,陰極觸媒層側會產生液態水,若液態水無法從觸媒層排出,水氾濫的現象就會發生。水氾濫現象將限制氧氣的質傳特性,同時也降低了燃料電池的性能。 解決此問題的關鍵技術就在於如何在燃料電池內有效的水管理,確保燃料電池各處都能達到水平衡。利用陰極側氣體擴散層雙側塗佈微孔層,變化其接觸角、孔隙率及碳粉當量,探討此時燃料電池的液態水分布以及對於電池性能的影響。結果發現,氣體擴散層塗佈雙側微孔層時,搭配上孔隙率高、接觸角低的微孔層能有效增強其液態水及氣體的傳輸,並強化其排水性進而提升燃料電池的性能。 | zh_TW |
dc.description.abstract | In this study, a two-dimensional two-phase proton exchange membrane fuel cell model is built by the finite element simulation software ─ COMSOL Multiphysics. The model is composed of gas diffusion layers with double micro-porous layers. The theory which use to analyze the model includes continuous equation, momentum equation and species conservation equation.
When the fuel cell is operated at high current density, the liquid-water is generated in the cathode catalyst layers. If liquid-water cannot flow out of the cathode catalyst layer, 'Flooding' will appear. The flooding phenomenon limits the transportation of oxygen and also destroys the performance of the fuel cell. The key point of solving this problem is to improve the management of water in order that the amount of liquid-water in the fuel cell can be appropriately controlled. The use of double micro-porous layers is a potential efficient way to achieve this goal. To identify the impacts of the saturation distribution on the performance of the fuel cell, this paper studies the effect of micro-porous layer by changing its contact angle, porosity and carbon loading. Results show that the double micro-porous layers of high porosity and low contact angle with gas diffusion layer can enhance the transportation of reactant gases and liquid-water, elevating the functions of removing liquid-water and improving the performance of fuel cell. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T04:22:39Z (GMT). No. of bitstreams: 1 ntu-99-R97543018-1.pdf: 1051115 bytes, checksum: 0a006a73da09a03a6c1b25f9faca306d (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | 致謝 Ⅰ
摘要 Ⅱ Abstract Ⅲ 目錄 Ⅳ 圖目錄 Ⅶ 表目錄 Ⅸ 符號說明 Ⅹ 一、序論 1 1.1前言 1 1.2燃料電池簡介 2 1.2.1 燃料電池歷史 2 1.2.2 燃料電池原理 3 1.2.3 燃料電池種類 4 1.2.4 質子交換膜燃料電池構造 5 1.3 文獻回顧 7 二、理論分析 22 2.1 基本假設 22 2.2 統御方程式 23 2.2.1 連續方程式 23 2.2.2 動量方程式 23 2.2.3 物種守恆方程式 24 2.2.3.1 基本定義 25 2.2.3.2 水的傳輸 26 2.2.3.3 氧氣的傳輸 27 2.3 性能曲線 28 2.3.1 可逆電位 30 2.3.2 活化過電位 31 2.3.3 歐姆過電位 31 2.3.4 濃度過電位 33 2.4 邊界條件 34 2.4.1 微孔層(近流道入口處) 34 2.4.2 氣體擴散層 35 2.4.3 微孔層(近觸媒層側) 35 2.5 模擬計算流程 36 三、結果與討論 45 3.1 雙側微孔層厚度比例的影響 46 3.1.1 液態水飽和度分布 46 3.1.2 氧氣濃度分布 48 3.2 雙側微孔層孔隙率的影響 50 3.2.1 液態水飽和度分布 50 3.2.2 氧氣濃度分布 51 3.3 雙側微孔層接觸角的影響 53 3.3.1 液態水飽和度分布 53 3.3.2 氧氣濃度分布 55 四、結論與未來展望 72 4.1 結論 72 4.2 未來展望 77 參考文獻 79 | |
dc.language.iso | zh-TW | |
dc.title | 氣體擴散層雙側微孔層塗佈對質子交換膜燃料電池性能影響計算分析 | zh_TW |
dc.title | Effects of the double micro-porous layers on the performance of PEM fuel cell | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 張敏興,鍾志昂,羅安成 | |
dc.subject.keyword | 質子交換膜燃料電池,氣體擴散層,微孔層,液態水飽和度, | zh_TW |
dc.subject.keyword | proton exchange membrane fuel cell,gas diffusion layer,micro-porous layer,liquid-water saturation, | en |
dc.relation.page | 82 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2010-07-02 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 應用力學研究所 | zh_TW |
顯示於系所單位: | 應用力學研究所 |
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