亚硫酸氢离子液体聚合物电解质膜用于直接甲醇燃料电池(DMFC)性能评价

Hasna Wakrim , Abderrahim Bouftou , Kaoutar Aghmih , Aicha Boukhriss , Mehdi El Bouchti , Sanaa Saoiabi , Said Gmouh , Sanaa Majid
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引用次数: 0

摘要

通过将不同重量比的3-己基-1-甲基咪唑亚硫酸氢盐([C6C1Imi][HSO3])和N-己基吡啶亚硫酸氢酯([C6Py][HSO3]])离子液体与聚乙烯醇(PVA)聚合物混合,制备了一系列质子导电膜。为了表征PVA离子液体膜,已经使用了不同的方法,如X射线衍射(XRD)、傅立叶变换红外(FTIR)和扫描电子显微镜(SEM)。此外,还研究了所制备的掺杂不同离子液体重量比的PVA膜的吸水率、离子交换容量、甲醇渗透性和质子传导性,以找到用作直接甲醇燃料电池电解质膜的最佳配方。随着离子液体含量的增加,质子电导率和离子交换容量得到改善。在25°C时,PVA-60重量%[C6C1Imi][HSO3]膜的最大质子电导率为17.47 mS.cm−1,甲醇渗透率为8.17 10−7 cm2.s−1。机械和热数据证实,添加离子液体可提高膜的柔韧性和热稳定性,最高可达200°C。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Performance evaluation of polymer electrolyte membranes based on hydrogen sulfite ionic liquid for application in direct methanol fuel cell (DMFC)

Performance evaluation of polymer electrolyte membranes based on hydrogen sulfite ionic liquid for application in direct methanol fuel cell (DMFC)

Series of proton conductive membranes were prepared by mixing different weight ratio of 3-hexyl-1-methylimidazolium hydrogensulfite ([C6C1Imi][HSO3]), and N-hexyl-pyridinium hydrogensulfite ([C6Py][HSO3]) ionic liquids with poly vinyl alcohol (PVA) polymer. To characterize the PVA-ILs membranes, different methods have been used such as X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and scanning electron microscope (SEM). Moreover, the water uptakes, ion exchange capacity, methanol permeability, and proton conductivity of prepared PVA membranes doped with different weight ratio of ILs have been investigated to find the optimum formulation to use as electrolytes membranes for direct methanol fuel cell. The proton conductivity and the ion exchange capacity were improved as the ILs content increased. At 25 °C, The PVA-60 wt.% of [C6C1Imi][HSO3] membrane had a maximum proton conductivity of 17,47 mS.cm−1, and a methanol permeability of 8.17 10−7 cm2.s  1. Mechanical and thermal data confirmed that addition of ILs improve the membrane flexibility and thermal stability up to 200 °C.

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