本研究主要目的為，研發新的質子交換膜以應用於直接甲醇燃料電池中（DMFC），希望能取代Nafion，Nafion薄膜的缺點含有膜材價格較為昂貴，且應用於甲醇燃料電池時，有高的甲醇滲透現象嚴重，所以值得進一步找尋替代材料。在本研究中，首先，製備含磺酸根基團之單體，然後利用芳香族親核性取代反應，聚合一系列含有不同磺酸比例之聚合物，這些聚合物具有高的分子量及可成膜性。
普遍來說，高分子薄膜的質子傳導度會隨溫度、溼度及薄膜的含水率增加而提高，而且這些聚合物，當其離子交換能力（IEC）值接近1時，所開發薄膜於室溫所測得質子導電度接近Nafion的值，但是甲醇滲透率卻較Nafion更低，顯示其優越的性質。
利用一連串的鑑定方法，例如：薄膜安定性、水的吸濕率以及熱分析...等，將所測得性質與Nafion117薄膜之相關性質做比較，以驗證其應用於燃料電池高分子電解質中之電極膜組的可行性。

The aim of this study was to develop new proton exchange membranes for DMFC（direct methanol fuel cell）for the substitution of the Nafion membrane showing high cost and poor barrier to methanol crossover,so it is worth to find new material. In this research, first, prepared the benzenesulfonic acid derivatives, and then, a series of benzenesulfonic acid functionalized polymers were synthesized by aromatic nucleophilic substitution. These polymers have high molecular weights and film-forming capabilities.
Genially speaking, the proton conductivity of the PEM increased as temperature, humidity, and degree of water uptake of the membranes. Those polymer membranes exhibited as good proton conductivities as Nafion , when IEC（ion exchange capacity）value were close to 1,but all had better barrier to methanol crossover than Nafion in room temperature.
A series of standard characterization methods were used to identify the membrane properties, such as membrane stability, sorption uptake in water and thermal analysis. The properties of membranes were compared with those of Nafion-117 with a target to be used for the fabrication of membrane electrode assembly (MEA).

1. 吳滄琪，磺酸化高分子於燃料電池質子交換膜製備之應用，元智大學化工系（2003）
2. 科學發展，367期，（2003）
3. 科學發展，391期，（2005）
4. 鄭耀宗，徐耀昇，燃料電池技術進展的現況，燃料電池論文集，15-27（1989）
5. W. R. Grove, Philos .Mag. Ser.3,14,127（1839）
6. A. Heinzel, R. Nolte, K. Ledjeff-Hey and M. Zedda, “Membrane fuel cells-concepts and system design”, Electrochim. Acta, 43, 3817（1998）
7. http://americanhistory.si.edu/
8. S. Surampudi, S. R. Narayanan, and E. Vamos, “Advances in direct methanol fuel-cells”, Joural of Power Sources, 47, 377（1994）
9. 曾育貞, 改質聚乙烯醇作為直接甲醇燃料電池之高分子聚電解質薄膜之研究, 台灣科技大學化工系
10. J. Shim, D. Y. Yoo, and J. S.Lee, “Characteristics for electrocatalytic properties and hydrogen-oxygen adsorption of platinum ternary alloy catalysts in polymer electrolyte fuel cell”, Electrochim. Acta, 45, 1943（2000）
11. B. Smitha, S. Sridhar, A.A. Khan, “Solid polymer electrolyte membranes for fuel cell applications－a review”, Joural of Membranes Science, 259, 10-26（2005）
12. 沈嘉進，改質聚乙烯醇作為直接甲醇燃料電池電解質薄膜之研究，台灣科技大學化工系
13. Uwe Beuscher,y, Simon J. C. Cleghorn and William B. Johnson, “Challenges for PEM fuel cell membranes”, International Joural of Energy Reserch; 29:1103–1112（2005）
14. Joural of Polymer Science, Chemistry, 25, 1093（1987）
15. Joural of Polymer Science, Chemistry, 28, 2427（1990）
16. http://en.wikipedia.org/wiki/Aromatic_sulfonation
17. http://tw.knowledge.yahoo.com/question/?qid=1306021910937
18. Takahiko Nakano, Shoji Nagaoka and Hiroyoshi Kawakami, “Short Communication Preparation of novel sulfonated block copolyimides for proton conductivity membranes”, Polym. Adv. Technol. 16,753–757（2005）
19. Zhe Wang , Xianfeng Li , Chengji Zha, Hongzhe Ni , Hui Na, “Synthesis and characterization of sulfonated poly(arylene ether ketone ketone sulfone) membranes for application in proton exchange membrane fuel cells”, Journal of Power Sources, 160, 969–976 (2006)
20. M. Sankir , Yu Seung Kim, Bryan S. Pivovar , James E. McGrath, “Proton exchange membrane for DMFC and H2/air fuel cells: Synthesis and characterization of partially fluorinated disulfonated poly(arylene ether benzonitrile) copolymers”, Journal of Membrane Science, 299, 8–18 (2007)