研究生: |
黃權偉 chuan - wei huang |
---|---|
論文名稱: |
合成新型含磺酸基之聚醯亞胺質子交換膜及其性質的研究 Synthesis and Characterization sulfonated polyimides for proton exchange membrane |
指導教授: |
陳燿騰
Yaw-Terng Cherm |
口試委員: |
王復民
none 王建珍 none |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2010 |
畢業學年度: | 98 |
語文別: | 中文 |
論文頁數: | 68 |
中文關鍵詞: | 磺酸化 、聚醯亞胺 、燃料電池 、質子交換膜 |
外文關鍵詞: | sulfonated, polyimide, fuel cell, proton exchange membrane |
相關次數: | 點閱:273 下載:4 |
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本研究主要目的為開發新的質子交換膜,應用於直接甲醇燃料電池中(DMFC),目前商用 Nafion薄膜有價格昂貴,不適合高溫使用,有高的甲醇滲透率等缺點,所以需要進一步尋找替代材料。在本研究中,主要是導入雜環來提升高分子膜的熱安定性及水解安定性,合成主鏈含磺酸基之聚醯亞胺共聚物,這一系列磺酸基聚醯亞胺有好的溶解性,能溶於NMP、DMAc及m-cresol等溶劑,都能經溶液塗佈成具韌性薄膜,所合成NTDA-P-SX聚合物薄膜的質子傳導度都在50-80℃時接近Nafion117,薄膜的質子傳導度會隨著溫度及薄膜的含水率增加而提高,而這些共聚物薄膜的耐水解安定性比由常用含磺酸基二胺(BDSA)所導出聚合物在相似IEC的耐水解安定性好很多。
Abstract
The aim of this study was to develop new proton exchange membranes(PEM) for DMFC (direct methanol fuel cell) for the substitution of the Nafion membrane showing high cost and poor barrier to methanol crossover. A series of sulfonated polyimides containing heterocylic groups were synthesized. The sulfonated polyimides generally showed good solubility in N-methyl-2-pyrrolidone(NMP), N,N-dimethylacetamide(DMAc) and m-cresol. They could be solution-cast into the tough films. Proton conductivities of these copolyimides membranes were measured as the function of temperature. At the temperature (50-80℃), the proton conductivities of NTDA-P-SX copolyimide was similar to those of Nafion117. At the temperature(50-80℃), the AP-based copolyimide (P-SX) membranes showed proton conductivities similar to those of Nafion117. The proton conductivity of these films increased with increase in temperature and degree of water uptake. In addition, P-SX-based copolyimide membranes exhibited much better water stability than those derived from a widely used sulfonated diamine, 2,2’-benzinedisulfonic acid (BDSA), with similar IEC.
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