Samsudin Asep Muhamad, Hacker Viktor
Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, 8010 Graz, Austria.
Department of Chemical Engineering, Diponegoro University, Jawa Tengah 50275, Indonesia.
Polymers (Basel). 2019 Aug 26;11(9):1399. doi: 10.3390/polym11091399.
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 at ambient condition. This study demonstrates that the PVA/PDDA/NZ AEMs are a potential candidate for APEFCs application.
阴离子交换膜（AEMs）对提高碱性聚合物电解质燃料电池（APEFCs）的性能和效率有显著贡献。通过溶液浇铸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（AEMs）。研究了氧化锆质量比对复合AEMs性能和属性的影响。分别通过傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、热重分析和万能试验机对AEMs的化学结构、形态、热性能和力学性能进行了表征。通过测量吸水率、溶胀度、离子交换容量和氢氧根传导率来验证复合AEMs的性能。纳米氧化锆均匀分散在PVA/PDDA AEMs基体中。添加NZ后，复合AEMs的力学性能得到显著提高。通过引入1.5 wt.%的NZ，PVA/PDDA/NZ复合AEMs在环境条件下获得了最高氢氧根传导率31.57 mS·cm。本研究表明，PVA/PDDA/NZ AEMs是APEFCs应用的潜在候选材料。
