Nafion/PVA-DEPE-TEOS電紡纖維質子交換膜甲醇燃料電池

Nafion/PVA-DEPE-TEOS electro-spun fiber composite membranes for DMFCs

林哲安(Che-An Lin)

指導教授 ： 余子隆

元智大學/工程學院/化學工程與材料科學學系/碩士(2011年)

摘要

本論文將聚乙烯醇(polyvinyl alcohol, PVA)/水溶液加入二乙基磷乙基三乙氧基矽烷(diethylphosphato ethyl triethoxysilane，DEPE-TEOS)混合，利用靜電紡織技術(Electrospinning)製成纖維膜。PVA-DEPE-TEOS纖維膜經由化學交聯增強機械性質。再將此PVA-DEPE-TEOS纖維膜浸漬及噴塗Nafion溶液製作複合膜。以此Nafion/DEPE-TEOS複合膜製作膜電極組(membrane electrode assembly, MEA)及進行直接甲醇燃料電池(direct methanol fuel cell, DMFC)測試。於甲醇濃度2 M、甲醇進料流量2.5 mL/min、O2流量75 mL/min、電池操作溫度90℃時，此單電池有最大功率密度107 mW/cm2。

關鍵字

聚乙烯醇 ； 二乙基磷乙基三乙氧基矽烷 ； 電紡 ； 直接甲醇燃料電池

並列摘要

We prepare polyvinyl alcohol (PVA) / diethylphosphate ethyl triethoxy solane (DEPE-TEOS) blend fiber thin film by electrospinning from the PVA/DEPE-TEOS mixed solution. The PVA/DEPE-TEOS thin film is then treated with chemical crosslink to improve its mechanical strength. The crosslinked PVA/DEPE-TEOS thin film is subsequently impregnated with the Nafion solution to prepare Nafion- /PVA-DEPE-TEOS composite membrane. The DMFC performance tests are carried out using MEAs prepared from present composite membrane (thickness 50μm) and Nafion-117 membrane (thickness~175μm). We show the present new proton exchange membrane has a better DMFC performance than Nafion-117 membrane.

並列關鍵字

polyvinyl alcohol (PVA) ； Electrospinning ； diethyl phosphato ethyl triethoxysilane (DEPE-TEOS) ； direct methanol Fuel cell (DMFC)

參考文獻

◇衣寶廉, 黃朝榮,“燃料電池-原理與應用”, 五南圖書(2005)

◇吳千舜, 諸柏仁, “燃料電池質子交換模的最新發展” , 化學 62卷第一期 (2004)

◇Adjemian K. T., Lee S. J., Srinivasan S., Benziger J. Bocarsly A. B., “Silicon Oxide Nafion Composite Membranes for Proton-Exchange Membrane Fuel Cell Operation at 80-140℃”, Journal of the Electrochemical Society, 149, A256-A261 (2002)

◇Adjemian K. T., Srinivasan S., Benziger J. Bocarsly A. B., “Investigation of PEMFC operation above 100 °C employing perfluorosulfonic acid silicon oxide composite membranes”, Journal of Power Sources, 109, 356-364 (2002)

◇Antonucci P. L., Arico A. S., Creti P., Ramunni E., Antonucci V., “Investigation of a direct methanol fuel cell based on a composite Nafion-silica electrolyte for high temperature operation”, Solid State Ionics, 125, 431-437 (1999)