臺灣博碩士論文加值系統

PBI (polybenzimidazole) 與Nafion摻合製作質子交換膜。研究此摻合膜之機械性質、質子傳導率、甲醇滲透率及其應用在甲醇燃料電池之性能。我們發現Nafion/PBI在重量比9/1之摻合膜有最佳之性能。將此摻合膜 (膜厚78 μm) 製作MEA進行DMFC單電池測試結果功率可達65.58 mW/cm2，效能優於Nafion-117 (膜厚175 μm)。

On this thesis, we prepare Nafion/PBI blend membranes and study their mechanical properties, proton conductivities, methanol permeateon and the application to direct methanol fuel cell (DMFC). We find the membrane with a Nafion/PBI wt ratio of 9/1 has a optimum property. The Nafion/PBI blend (9/1 g/g) with a thichness of 78 μm is used to prepare MEA and performed DMFC test. The experiment results show that the present membrane had a better DMFC performance than Nafion-117.

摘要 I
AbstractI I
目錄 III
圖目錄 VII
表目錄 XIII
第一章 序論 1
1.1前言 1
1.2燃料電池簡介 2
1.2.1 原理及構造 2
1.2.2 燃料電池的分類與優缺點 4
1.3　質子交換膜簡介 6
1.3.1聚全氟磺酸膜簡介 6
1.3.1.1 Nafion改質技術簡介 7
1.3.2　聚苯並咪唑簡介 9
1.4　電紡技術簡介 14
1.4.1　奈米纖維(nanofiber)簡介 14
1.4.2 電紡絲程序 16
1.4.3 穩定的電紡絲程序 18
1.4.4　影響電紡絲纖維形態之參數 20
1.4.5 PBI製備電紡纖維相關文獻 21
1.5 研究目的 28
第二章 實驗 29
2.1 實驗架構 29
2.2 藥品 30
2.3 儀器設備 31
2.4 實驗步驟 33
2.4.1 PBI的合成及鑑定 33
2.4.1.1 PBI合成的反應方程式 33
2.4.1.2 PBI的結構鑑定和性質分析 34
2.4.2 PBI電紡纖維膜製備及分析鑑定 35
2.4.2.1 PBI電紡纖維膜製備 35
2.4.2.2 PBI 電紡纖維以戊二醛作化學交聯反應 36
2.4.3 Nafion/PBI 電紡纖維複合膜製作 37
2.4.4 Nafion/PBI摻合膜製備 37
2.4.5 質子交換膜分析鑑定 38
2.4.5.1 甲醇滲透測定 38
2.4.5.2 拉力測試 40
2.4.5.3 衰減全反射紅外線光譜儀結構鑑定 40
2.4.5.4　SEM分析及性質分析鑑定 40
2.4.5.5 複合膜質子傳導率測定 41
2.5 膜電極組(MEA)製備及單電池測試 43
2.5.1 DMFC MEA製備 43
第三章 結果與討論 46
3.1 PBI的合成及結構分析鑑定 47
3.1.1 PBI的霍式紅外光譜儀（FTIR）分析 47
3.1.2 PBI純化過程IR分析 48
3.1.3 PBI GPC測定 49
3.2　Nafion/PBI不同比例摻合膜性質測試 51
3.2.1 Nafion/PBI 摻合膜之分析鑑定 51
3.2.1.1 Nafion/PBI 不同摻合比例的 ATR結構分析 52
3.2.1.2 Nafion/PBI 摻合膜浸漬不同次數1 M硫酸 (每次4 hr) 的SEM形態分析 54
3.2.1.3 Nafion/PBI摻合膜甲醇滲透 61
3.2.1.4 Nafion/PBI摻合膜導電度 63
3.2.1.5 Nafion/PBI摻合膜拉力測試 64
3.3 PBI電紡纖維膜製作及分析 65
3.4 DMFC 單電池測試 67
3.4.1 Nafion-117與 Nafion/PBI摻合膜之DMFC單電池測試 67
3.4.2 Nafion/PBI不同比例摻合膜DMFC單電池性能 68
第四章 結論 77
第五章 參考文獻 78

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