Renewable Energy ( IF 9.0 ) Pub Date : 2021-02-12 , DOI: 10.1016/j.renene.2021.02.046 Sandip Pal , Rakhi Mondal , Uma Chatterjee
Copolymers of poly(methyl methacrylate)-co-poly (2-acrylamido-2-methyl-1-propane sulfonic acid (PMMA-co-PAMPS) have been prepared via radical polymerization with different MMA to AMPS mol ratio and blended with polyvinylidene fluoride (PVDF) and sulfonated PVDF (S-PVDF) in a different weight ratio to prepare proton exchange membranes (PEMs) by simple solution casting method for fuel cells application (PEMFCs). Five different PEMs have been prepared from only PMMA-co-PAMPS, blending PMMA-co-PAMPS with PVDF, and also by blending PMMA-co-PAMPS with S-PVDF to get the suitable membrane for PEMFCs application. We have also studied the effect of PVDF and S-PVDF in the blend membranes on the water uptake, mechanical stability, thermal stability, proton conductivity (Km), and methanol permeability () properties. PEMs prepared by blending with S-PVDF exhibited high Km and low value. PEM-5 membrane prepared by blending S-PVDF with PMMA-co-PAMPS (30:70 w/w) exhibited Km at room temperature 5.7 × 10−2 S/cm, PM value 5.24 × 10−7 cm2/s and maximum power density 477 mW/cm2. This value is much lower than that of the Nafion® 117 membrane (22 × 10−7 cm2/s). This low , high Km and high selectivity make the S-PVDF blend membranes a good candidate in PEMFCs or direct methanol fuel cells (DMFCs) application.
中文翻译:
磺化聚偏二氟乙烯和功能共聚物基混合质子交换膜在燃料电池中的应用及甲醇穿越研究
聚甲基丙烯酸甲酯-共- (2-丙烯酰胺基-2-甲基-1-丙烷磺酸)(PMMA-共-PAMPS)的共聚物是通过不同的MMA与AMPS摩尔比进行自由基聚合制备的,并与聚偏二氟乙烯共混(PVDF)和磺化的PVDF(S-PVDF)以不同的重量比通过简单的溶液浇铸方法制备用于燃料电池的质子交换膜(PEMFC),仅由PMMA- co -PAMPS制备了五种不同的PEM ,将PMMA- co -PAMPS与PVDF混合,以及将PMMA- co带有S-PVDF的-PAMPS,以获得适用于PEMFC应用的膜。我们还研究了共混膜中PVDF和S-PVDF对吸水率,机械稳定性,热稳定性,质子传导率(K m)和甲醇渗透率() 特性。通过与S-PVDF混合制备的PEM表现出高K m和低Km价值。PEM-5膜制备通过与PMMA-共混S-PVDF共-PAMPS(30:70 w / w的)显示出ķ米在室温下5.7×10 -2 S / cm的,P中号值5.24×10 -7 厘米2 / s和最大功率密度477 mW / cm 2。这值远低于117膜(22×10 -7 cm 2 / s)。这么低,高K m和高选择性使S-PVDF共混膜成为PEMFC或直接甲醇燃料电池(DMFC)应用的良好选择。