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首页> 美国卫生研究院文献>Polymers >Preparation and Characterization of PVA/PDDA/Nano-Zirconia Composite Anion Exchange Membranes for Fuel Cells
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Preparation and Characterization of PVA/PDDA/Nano-Zirconia Composite Anion Exchange Membranes for Fuel Cells

机译：燃料电池用PVA / PDDA /纳米氧化锆复合阴离子交换膜的制备与表征

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摘要

Anion exchange membranes (AEMs) contribute significantly to enhance the performance and efficiency of alkaline polymer electrolyte fuel cells (APEFCs). A sequence of composite anion exchange membranes (AEMs) consisting of poly(vinyl alcohol) (PVA), poly(diallyldimethylammonium chloride) (PDDA), and nano-zirconia (NZ) has been prepared by a solution casting technique. The effect of zirconia mass ratio on attribute and performance of composite AEMs was investigated. The chemical structures, morphology, thermal, and mechanical properties of AEMs were characterized by FTIR, SEM, thermogravimetric analysis, and universal testing machine, respectively. The performance of composite AEMs was verified using water uptake, swelling degree, ion-exchange capacity, and OH− conductivity measurement. The nano-zirconia was homogeneously dispersed in the PVA/PDDA AEMs matrix. The mechanical properties of the composite AEMs were considerably enhanced with the addition of NZ. Through the introduction of 1.5 wt.% NZ, PVA/PDDA/NZ composite AEMs acquired the highest hydroxide conductivity of 31.57 mS·cm−1 at ambient condition. This study demonstrates that the PVA/PDDA/NZ AEMs are a potential candidate for APEFCs application.
机译：阴离子交换膜（AEM）大大有助于提高碱性聚合物电解质燃料电池（APEFC）的性能和效率。已经通过溶液流延技术制备了一系列由聚（乙烯醇）（PVA），聚（二烯丙基二甲基氯化铵）（PDDA）和纳米氧化锆（NZ）组成的复合阴离子交换膜（AEM）。研究了氧化锆质量比对复合材料AEMs性能和性能的影响。通过FTIR，SEM，热重分析和通用试验机分别表征了AEM的化学结构，形态，热学和力学性能。使用吸水率，溶胀度，离子交换容量和OH -电导率测量来验证复合材料AEM的性能。纳米氧化锆均匀地分散在PVA / PDDA AEMs基质中。加入NZ后，复合材料AEM的机械性能大大提高。通过引入1.5 wt％的NZ，PVA / PDDA / NZ复合材料AEM在环境条件下获得了最高的氢氧化物电导率31.57 mS·cm -1 。这项研究表明，PVA / PDDA / NZ AEM是APEFC应用的潜在候选者。

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