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博碩士論文 etd-0829112-143450 詳細資訊
Title page for etd-0829112-143450
論文名稱
Title
不同流道結構及GDL親/疏水性之微型質子交換膜燃料電池性能分析
Performance Analysis of a Micro-PEM Fuel Cell with Different Flowfields and Hydrophobic/ Hydrophilic Gas Diffusion Layers
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
109
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2012-07-03
繳交日期
Date of Submission
2012-08-29
關鍵字
Keywords
開孔率、親/疏水性、蛇型狀、蛇型-平型狀、氣體擴散層、微型質子交換膜燃料電池
Open ratio, Hydrophilic/hydrophobic, Serpentine, Serpentine-Parallel, Micro proton exchange membrane fuel cell, Gas diffusion layer
統計
Statistics
本論文已被瀏覽 5655 次,被下載 1245
The thesis/dissertation has been browsed 5655 times, has been downloaded 1245 times.
中文摘要
本研究探討氣體擴散層(GDL)親/疏水性(hydrophilic/hydrophobic)及不同開孔率(open ratio)之流道對微型質子交換膜燃料電池(μPEMFC)性能影響。本實驗利用黃光微影製程(LIGA-Like)和微電鑄技術製作流道板,以蛇型-平型狀(serpentine-parallel)和蛇型狀(serpentine)為幾何微結構,設計四種開孔率(52.8 %、50.8 %、75.2 %及75.75 %)之流道,並藉由壓克力作為μPEMFC兩側端板組裝燃料電池。實驗主要改變陽極氣體擴散層親/疏水性與陰極流道開孔率為操作參數,探討這兩項參數對電池極化曲線與功率密度之影響,並將實驗結果以P-I曲線與V-I曲線表示。實驗結果顯示,於陽極和陰極進氣流量為1:5下,陽極和陰極皆以20 wt.% 疏水性材質(PTFE)處理之氣體擴散層,配合陽極開孔率為50.8 %、陰極開孔率為75.75 %之流道設計有最好的性能。
Abstract
This research mainly investigated how the hydrophilic and hydrophobic properties of gas diffusion layer, and the different open ratio of the flowfield may affect the performance of the micro proton exchange membrane fuel cell (μPEMFC). The flow plate used in this experiment was made through deep UV lithography manufacturing processes and micro-electroforming manufacturing processes. Four different open ratios, 52.8 %, 50.8 %, 75.2 % and 75.75 %, of the flowfield were designed for the flow plate composed of serpentine-parallel and serpentine geometrical micro configurations. Acrylic (PMMA: Polymethylmethacrylate) was used to make the terminal plate placed on both sides of the micro proton exchange membrane fuel cell. By varying values of the hydrophilic and hydrophobic properties of the anode gas diffusion layer, the effects of these two parameters on the polarization curve and power density of the cell were explored. All results obtained in the experiment are presented by P-I curve and V-I curve. The experiment results show that, with 1: 5 flow ratio of anode to cathode, a design with the gas diffusion layer made of the material with hydrophobic factor 20 wt.% and with open ratio of 50.8 % for anode flow channel as well as open ratio of 75.75 % for cathode flow channel may have the best performance.
目次 Table of Contents
目 錄 i
表目錄 iii
圖目錄 iv
符號說明 vi
中文摘要 viii
英文摘要 ix
第一章 序論 1
1-1 前言 1
1-2 燃料電池之發展歷史與簡介 3
1-3 文獻回顧 9
1-4 研究目的 19
第二章 燃料電池元件設計與製作 22
2-1 微型質子交換膜燃料電池組成元件 22
2-2 微型質子交換膜燃料電池設計要點 27
2-3 微型質子交換膜燃料電池組元件設計與製作 29
2-4 微型質子交換膜燃料電池組裝 33
第三章 燃料電池性能分析 43
3-1 電極熱力學 43
3-2 極化現象 50
3-3 極化曲線 52
第四章 實驗設備與元件材料 55
4-1 實驗設備 55
4-2 實驗元件材料 59
第五章 誤差分析 62
第六章 實驗結果與討論分析 66
6-1 不同流道設計對電池性能的影響 67
6-2 氣體擴散層之親/疏水性對於電池性能的影響 69
6-3 最佳組合與進氣流量對電池性能的探討 71
第七章 結論與建議 80
7-1 結論 80
7-2 建議與改進 82
參考文獻 83
附錄A 91
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