磺化聚亞醯胺/聚乙烯醇複合質子交換膜之合成與性質於燃料電池上的運用

Synthesis and properties of Sulfonated Polyimides/Poly(vinyl alcohol) composite proton exchange membrane for fuel cell application

黃偉杰(Wei-Jie Huang)

指導教授 ： 謝國煌

國立臺灣大學/工學院/化學工程學研究所/碩士(2010年)

https://doi.org/10.6342/NTU.2010.10107

摘要

本研究利用混合磺化聚亞醯胺與聚乙烯醇之間甲酚溶液並倒於玻璃板上製成一系列磺化聚亞醯胺/聚乙烯醇複合薄膜，磺化聚亞醯胺是以1,4,5,8-萘四酸二酐為二酸酐, 4,4'-雙(4-氨苯氧基)聯苯-3,3’雙磺酸為磺化二胺單體, 及4,4'-二氨基二苯醚(ODA) 為非磺化二胺單體合成.並使用熱性質分析、吸水率、質子傳導度、微相結構分析、甲醇穿透度及單電池效能分析來研究複合膜的性質。
於熱性質分析中，磺化聚亞醯胺/聚乙烯醇複合膜表現出優異的熱穩定性並可在高溫中保留住水分避免散失，因此複合膜可以在高溫下保持住質子傳導度。隨著增加聚乙烯醇於膜中的添加量，增強了磺酸根與羥基間的氫鍵引力，產生離子性交聯的效果，使磺化聚亞醯胺/聚乙烯醇複合膜擁有較低的甲醇穿透度。於氫燃料電池測試中，磺化聚亞醯胺/聚乙烯醇複合膜表現出優異的電池效能，綜合全部的數據，本研究指出磺化聚亞醯胺/聚乙烯醇複合膜於直接甲醇燃料電池的使用上也擁有相當高的潛力。

關鍵字

磺化聚亞醯胺 ； 質子交換膜 ； 燃料電池 ； 聚乙烯醇 ； 甲醇穿透度

並列摘要

In this study, a series of the sulfonated polyimide/PVA composite membranes was successfully obtained from blending both polymers in m-cresol solution and then casting onto the glass plates. Sulfonated polyimide was synthesized from 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTDA), 4,4’-bis(4-aminophenoxy) biphenyl-3,3’-disulfonic acid (BAPBDS) as sulfonated diamines, and non-sulfonated diamines 4,4’-Oxydianiline (ODA). Many analyses such as thermal analysis, water uptake, proton conductivity, microstructure analysis, methanol permeability and fuel cell performance were carried out to investigate the membrane properties.
In thermal analysis, SPI/PVA composite membranes showed the high thermal stability and could retain water at high temperature, thus all SPI/PVA composite membranes maintained high proton conductivity at high temperature. With increasing PVA content in the membrane, SPI/PVA composite membranes displayed excellent methanol permeability due to the interaction between sulfonic acid groups and hydroxyl groups. In hydrogen fuel cell test, all SPI/PVA composite membranes showed the good cell performance. This study suggests that the SPI/PVA composite membranes also have high potential for direct methanol fuel cell application.

並列關鍵字

Sulfonated polyimide ； PEM ； fuel cell ； PVA ； methanol permeability

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