Ghil Lee-Jin, Kim Chang-Kyeom, Park Na-Ri, Rhee Hee-Woo
Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, Korea.
J Nanosci Nanotechnol. 2011 Jan;11(1):331-4. doi: 10.1166/jnn.2011.3186.
The perfluorosulfonic acid polymer membrane is most widely used in PEMFCs. However, its some major drawbacks like high cost and performance limitation at high temperature are obstacles of its commercialization. The goal of this study was to develop low cost membranes which have good conductivity in the range of PEMFCs operating temperature. We fabricated new sPEEK/3-APTES nanocomposite membrane where inorganic particles were chemically bonded to sulfuric acid group of sPEEK. PEEK is a thermally stable, mechanically tough and very cheap polymer. And the addition of 3-APTES and phosphorous acid increased the proton conductivity of composite membranes at high temperatures. This nanocomposite membranes maintained good conductivity at 110 degrees C.
全氟磺酸聚合物膜在质子交换膜燃料电池（PEMFCs）中应用最为广泛。然而，其一些主要缺点，如成本高和在高温下性能受限，是其商业化的障碍。本研究的目标是开发在PEMFCs工作温度范围内具有良好导电性的低成本膜。我们制备了新型磺化聚醚醚酮（sPEEK）/3-氨丙基三乙氧基硅烷（3-APTES）纳米复合膜，其中无机颗粒化学键合到sPEEK的硫酸基团上。聚醚醚酮（PEEK）是一种热稳定、机械性能坚韧且非常便宜的聚合物。并且添加3-APTES和亚磷酸提高了复合膜在高温下的质子传导率。这种纳米复合膜在110℃时保持了良好的导电性。
