本研究以聚二甲基矽氧烷(Polydimethylsiloxane, PDMS)為作為撓曲性質之基材，並
利用其優秀之翻模能力製作出流道板、陰極保護蓋，接著以自體黏合的方式，將膜電極
組黏合並灌膜成型，即完成可撓曲式微型直接甲醇燃料電池之製備，即便在撓曲狀態下，
燃料也不會洩漏。
本實驗改善了電極製作方法與陰極的潤濕，使用噴筆噴塗塗佈觸媒層於商用微孔層
上，並且在單電池測試時潤濕陰極，使質子傳導能力達至理想狀態，最終的電池有更佳
的穩定性與再現性。此外，藉由調整熱壓溫度、壓力參數、觸媒乘載量，使燃料電池OCV
由0.508 V 提至0.629 V，Power 則從5.30 mW 提升至23.98 mW。
在濃度極化測試中，OCV 隨著甲醇燃料濃度的增加，燃料穿透現象加劇而逐漸減
少，功率則隨濃度增加而降低，但是在5Ｍ時，功率不降反升，則是因為反應劇烈而使
得MEA 溫度上升，為其效能上升之主因；在撓曲測試中，隨著軟性燃料電池撓曲程度
的增加，電池整體結構變得更加密合，歐姆阻抗逐漸變小，因此其整體效能變得更好；
在30 mA 定電流長效測試中，持續進料2M 甲醇燃料，經歷24hr 後，效能的下降趨於
平緩，在42 hr 長效後之短效測試，其功率從23.98 mW 降至5.64 mW；固定1ml 之2M
甲醇燃料，經歷1 hr 後，由於燃料濃度的減少，電位明顯下降。
本研究也探討分段電極，將4 cm2 分為2 段和4 段，以並聯相連，其中分4 段電極
效能從7.90 mW 提升至10.22 mW，表示其撓曲狀態對於膜電極組之損耗減緩，而能在
相同反應面積下有較高的效能。

In this study, polydimethylsiloxane (PDMS) was used as the flexible material. We
manufacture the flow channel plate and cathodic protective cover by its excellent mold turning
ability. And then, bonding above components with the membrane electrode assembly by the
self-adhesive method to complete the preparation of the bendable mini-direct methanol fuel
cell. The fuel will not leak even in the bending condition.
This experiment improves the electrode manufacturing method and humidity of cathode.
The catalyst layer is sprayed on the commercial microporous layer with an airbrush, and the
cathode is humidified during the single cell test, so that the proton conductivity reaches the
ideal state. The final fuel cell has better stability and reproducibility. In addition, the OCV of
the fuel cell was increased from 0.508 V to 0.629 V, and the Power was increased from 5.30
mW to 23.98 mW by adjusting the hot-pressing temperature, pressure parameters, and catalyst
loading capacity.
In the concentration polarization test, the OCV gradually decreases as the methanol fuel
concentration increases and the fuel penetration phenomenon increases. And the power
decreased with the increase in concentration, however, at 5M, the power do not decrease but
increased because of the violent reaction. The increase in the temperature of the MEA is the
main reason for the increase in its efficiency; In the bendable test, as the degree of bendable of
the flexible fuel cell increases, the overall structure of the fuel cell becomes more dense and the
ohmic resistance gradually decreases, so its overall performance becomes better; In the 30 mA
constant current long-term test, the 2M methanol fuel was continuously fed. After 24 hours, the
II I
performance decline tended to be flat. In the short-term test after 42 hr, the power dropped from
23.98 mW to 5.64 mW; Fixed 1ml of 2M methanol fuel, after 1 hr, the potential drops
significantly due to the decrease of fuel concentration.
This study also discusses segmented electrodes, which divide 4 cm2 into 2 and 4 segments
and connect them in parallel. Among them, the efficiency of the 4 pieces of the segmented
electrode is increased from 7.90 mW to 10.22 mW, indicating that the bending state reduces the
damage of the membrane electrode assembly and can have higher efficiency under the same
reaction area.

總目錄
摘要 I
Abstract II
致謝 IV
總目錄 V
表目錄 IX
圖目錄 XI
第一章 緒論 1
1.1前言 1
1.2研究動機 2
第二章 基本原理與文獻回顧 4
2.1燃料電池簡介 4
2.2直接甲醇燃料電池 6
2.3直接甲醇燃料電池結構 7
2.3.1質子交換膜(Proton Exchange Membrane) 7
2.3.2 觸媒層(Catalyst Layer, CL) 8
2.3.3 氣體擴散層(Gas Diffusion Layer, GDL) 10
2.3.4 微孔層(Microporous layer) 10
2.3.5 單雙極板(Unipolar & Bipolar Plate) 11
2.3.6周邊輔助系統(Balance of Plant, BOP) 12
2.4直接甲醇燃料電池工作原理 12
2.5直接甲醇燃料電池之極化現象 13
2.5.1甲醇穿越(Methanol Crossover) 14
2.5.2活性極化(Active Polarization) 15
2.5.3歐姆極化(Ohmic Polarization) 15
2.5.4濃度極化(Concentration Polarization) 15
2.6被動式直接甲醇燃料電池 16
2.7流道設計對效能之影響 16
2.8可撓曲燃料電池 18
2.9直接甲醇燃料電池之實際應用 24
第三章 實驗方法 26
3.1實驗流程 26
3.2實驗藥品、耗材與設備 27
3.2.1實驗藥品、耗材 27
3.2.2實驗設備 28
3.3 燃料電池電極製備 28
3.3.1 刮刀塗佈 29
3.3.2 噴塗塗佈 32
3.3.3 滴塗塗佈 33
3.4 電極分析 33
3.4.1掃描式電子顯微鏡 ( SEM ) 33
3.4.2循環伏安法(Cyclic voltammetry,CV) 33
3.5 單電池測試 (Single Cell Test) 37
3.5.1 質子交換膜之預處理 38
3.5.2膜電極組壓合 39
3.5.3單電池之極化掃描測試 39
3.6 以PDMS為基材之軟性電池模組製作與測試 40
3.6.1壓克力模組設計 41
3.6.2 PDMS陽極流道板的製作 42
3.6.3 MEA之熱壓 43
3.6.4 MEA之陽極邊緣熱壓 44
3.6.5 PDMS陰極保護蓋 45
3.6.6 PDMS單電池之灌模成型 45
3.6.7 PDMS單電池極化掃描 47
第四章 結果與討論 48
4.1刮刀塗佈 48
4.1.1 電流收集層改善測試 49
4.1.2雙電極為Ru/Pt之測試 51
4.1.3不同Nafion比例之測試 52
4.1.4不同熱壓壓力之測試 53
4.2 陰極潤濕 55
4.3 不同電極製備方法 56
4.3.1 滴塗塗佈 58
4.3.2 噴塗塗佈 59
4.3.3 不同製備方法之比較 61
4.4 噴塗塗佈 62
4.4.1 熱壓溫度改變 62
4.4.2 熱壓壓力改變 63
4.4.3 提升觸媒乘載量 65
4.4.4不同Nafion比例之循環伏安測試 67
4.5 長效測試 71
4.5.1持續進料之長效測試 71
4.5.2不持續進料之長效測試 74
4.6 濃度測試 76
4.7 撓曲測試 78
4.8 分段電極 79
4.8.1分段式電極單顆 79
4.8.2分段式電極 82
第五章 結論 85
第六章 未來工作 87
第七章 參考文獻 88

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