本研究目的有二：一是以CCM方法製作高性能與高利用率的電極，另一個則是，提升非均質碳纖維束架構電池的性能。
首先，就電極製作上，建立一具有密集三相區(高利用率)的理想電極結構，在此目標下，分別從(1)噴塗系統的選擇、(2)觸媒分散的實驗、(3)噴塗系統的優化、(4)電極的性能分析等方式，系統性的探討電極製備方法與制定一可靠而有效的觸媒製備參數。
另外，架構在非均質碳纖維束的單電池性能探討，發現：(1)透過增加反應發生數量的方法，來提升活化反應的性能，增加觸媒負載量與集中觸媒來提高利用率，對活化區的的性能提升，表現明顯。(2)藉由對ME(膜電極)塗布薄的導電層，或對Stack與MEA施予適當的壓合以及對GDL與ME的熱壓，來減少接觸阻抗，另外，減少碳纖維對電極的披覆率實驗顯示，會造成活化反應的衰退、大幅增加歐姆損失。(3)利用提高反應氣體的流量，可以提升質傳性能，但增加反應氣體的壓力，對性能影響不明顯，另外，當單極板採陽極向上時，對陰極生成水的排除似乎有利。

This study has two purposes: First, the catalyst-coated membrane (CCM) method to produce high performance and high utilization of electrode, and the other is to enhance the fuel cell performance with the heterogeneous carbon fiber bunch framework of stack.
First, to establish an ideal electrode structure, there has an intensive triple phase boundaries. We will describe how the procedure of reliable and practical electrode improved following the optimization of (1) the spray system, and (2) the catalyst dispersion. We will also focus (3) modification of the spray system, and (4) electrode performance analysis.
In addition, investigate of the single cell performance in heterogeneous carbon fiber bunch framework. We will find that: (1) Increasing the catalyst loading and concentrated the catalyst activation reaction, can be improve the electrode performance and catalyst utilization. (2) Coating a thin conductive layer onto membrane electrode (ME), be a precise hot-pressue process in the Stack and MEA or GDL and ME, can be reduce the contact resistance. Specially, reduce the carbon fiber coverage fraction with electrode area, result the activation reaction decay and ohmic loss obviously. (3) Increasing the gas flow rate, can enhance the mass transfer performance, but increase the pressure of the reaction gas, can’t significant effect on performance. Besides, when the stack is anode side up, seems favorable to the exclusion the generate water of cathode.

第一章 緒論 1
1.1 前言 1
1.2 研究動機 1
1.3 文獻回顧 2
第二章 實驗材料與實驗設備介紹 5
2.1 實驗材料 5
2.2 實驗設備 7
第三章 結果與討論 14
3.1 觸媒的設計、分散與調配 15
3.1.1 觸媒層結構模型的設計 15
3.1.2 噴塗系統架設與選擇 19
3.1.3 觸媒製備程序對觸媒分散的影響 22
3.1.4 噴塗製程對觸媒分散的影響 23
3.1.5 不同觸媒配方的實驗與性能分析 27
3.1.6 Nafion含量對觸媒分散與性能關係 30
3.1.7 配方的實驗最佳化 30
3.2 改善MEA活化損失的探討 31
3.2.1 觸媒負載量對性能的影響 32
3.2.2 集中觸媒反應區對性能的影響 33
3.3 改善MEA歐姆損失的探討 34
3.3.1 各介面間的接觸電阻改善與性能探討 34
3.3.2 CCM MEA使用不同GDL熱壓之性能與現象探討 36
3.3.3 碳纖維束披覆率與性能探討 40
3.4 改善MEA質傳損失的探討 42
3.4.1 壓力、流量對反應氣體的質傳影響 42
3.4.2 重力對排出生成物的質傳影響 44
第四章 結論 46
4.1 結論 46
4.2 未來展望 48
參考文獻 49

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