質子交換膜燃料電池具備可微型化與可低溫操作的特性，非常適合用於可攜帶式電子產品上，當作電力的來源。所以本文建立一個三維的微型質子交換膜燃料電池組之數值模擬模型，求解電池內部電位分佈與電流密度，並探討在低溫操作下，三種不同溫度之電池性能與極化曲線。
本研究之模組燃料電池組是以兩顆單電池組成，在入口壓力固定在97kPa，電池內部等溫的情況下，陽極以純氫氣為入口燃料，陰極輸入空氣，在三種不同的操作溫度下（298K、308K、323K）進行模擬，由於電池溫度變化會影響到陰極電化學反應的反應速率，進而影響到整個電池組的性能，本文也將會就不同的溫度，電池的性能加以探討。
本文之模擬結果與實驗數據做比較，並討論水的相變化對電池性能的影響。結果顯示模擬的極化曲線與實驗的數據趨勢與數據皆相當吻合。

Proton exchange membrane (PEM) fuel cell possesses the characteristics of microminiaturization and low temperature operation. For this reason, the proton exchange membrane fuel cell is very suitable to serve as power source of portable electronic products. In this paper, a three-dimensional numerical model to evaluate the voltage and the total current density of a PEM fuel cell stack was developed. The polarization curves of the PEM fuel cell stack under three different operating temperatures were investigated.
In this study, the micro PEM fuel cell stack contains two single cells. Pure H2 gas stream was supplied as the anode inlet flow and air as the cathode inlet flow under constant pressure at 97 kPa and constant cell temperate (298K、308K、323K) conditions. Because the cell temperature may affect the chemical reaction rate on the cathode side, we discussed the influences of different temperatures on the cell performance.
Solutions were compared with the experimental data. Both the value of power density and the tendency of polarization curve are in good agreement with the experimental data.

目錄 I
圖目錄 IV
表目錄 VI
摘要 VII
Abstract VIII
符號說明 IX
第一章 緒論 1
1.1前言 1
1.2燃料電池的分類 2
1.2.1燃料電池組 5
1.3質子交換膜燃料電池的構造 6
1.4質子交換膜燃料電池的工作原理 7
1.5質子交換膜燃料電池的特色 8
第二章文獻回顧 15
2.1文獻回顧 15
2-2研究目的與動機 18
第三章理論分析 20
3.1基本假設 20
3.2統御方程式 20
3.2.1質量守恆 21
3.2.2動量守恆 23
3.2.3成份守恆 24
3.2.4電量守恆 26
3.2.5質子交換膜內部水含量 30
第四章 數值方法 33
4.1數值方法 33
4.1.1通用守恆方程式 33
4.1.2有限體積法(finite volume method) 33
4.2邊界條件(Boundary conditions) 38
4.2.1 進口與壁面邊界條件 38
4.2.2熱、質傳邊界條件設定 38
4.2.3 電位邊界條件設定 39
4.3求解流程與誤差設定 39
4.4格點獨立測試 39
第五章 結果與討論 48
5.1物理模型 48
5.2實驗數據驗證 49
5.3 電池電位分布 50
5.4 電池操作溫度對電池性能的影響 50
5.5數據比較 50
5.6陰極內部水的討論 52
5.7質子交換膜水含量討論 53
5.8陰極氧濃度分布討論 53
6.1結論 72
6-2建議 73

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