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首页> 外文期刊>RSC Advances >Cross-linked multiblock copoly(arylene ether sulfone) ionomerano-ZrO2 composite anion exchange membranes for alkaline fuel cells
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Cross-linked multiblock copoly(arylene ether sulfone) ionomerano-ZrO2 composite anion exchange membranes for alkaline fuel cells

机译：用于碱性燃料电池的交联多嵌段共聚（亚芳基醚砜）离聚物/纳米ZrO2复合阴离子交换膜

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摘要

A series of cross-linked multiblock copoly(arylene ether sulfone) ionomerano-ZrO2 (CLQCPAESano-ZrO2) composite anion exchange membranes were prepared via block copolymerization, bromomethylation, ultrasonication blending, self-crosslinking, quaternization and alkalization. The structure, and the surface and cross section morphology of the CLQCPAESano-ZrO2 composite membranes were characterized by solubility tests, FT-IR, XRD and SEM analyses. The combination of the determined results revealed that the CLQCPAESano-ZrO2 composite membranes are a complex cross-linking networks of hydrophobic domains/hydrophilic domainsano-ZrO2 with a clear zonal distribution of uniform nano-sized particles in the hydrophilic domains, when the nano-filler loading was below 7.5%. Basic performances of the CLQCPAESano-ZrO2 composite membranes were assessed to investigate their application in fuel cells in terms of the water uptake, swelling ratio, ion exchange capacity (IEC), hydroxide conductivity, thermal and mechanical properties, and alkaline stability. The modification of anion exchange membranes with multiblock ionomer structures, the use of a cross-linking technique and the introduction of nano-ZrO2 particles greatly enhanced the water uptake, hydroxide conductivity, mechanical properties and alkaline stability of the composite membranes. In particular, the CLQCPAES/7.5%ZrO2 membrane with an IEC value of 1.23 mmol g(-1) exhibited the best comprehensive properties and constitutes a good potential candidate for an anion exchange membrane to be used in AEMFCs.
机译：通过嵌段共聚，溴甲基化，超声共混，自交联，季铵化和碱化制备了一系列交联的多嵌段共聚（亚芳基醚砜）离聚物/纳米ZrO2（CLQCPAES /纳米ZrO2）复合阴离子交换膜。通过溶解度测试，FT-IR，XRD和SEM分析表征了CLQCPAES /纳米ZrO2复合膜的结构，表面和截面形态。确定结果的组合表明，CLQCPAES /纳米ZrO2复合膜是疏水域/亲水域/纳米ZrO2的复杂交联网络，在亲水域中具有均匀的纳米级颗粒清晰的区域分布纳米填料的负载低于7.5％。评估了CLQCPAES /纳米ZrO2复合膜的基本性能，以研究其在燃料电池中的吸水率，溶胀率，离子交换容量（IEC），氢氧化物电导率，热和机械性能以及碱稳定性。具有多嵌段离聚物结构的阴离子交换膜的改性，交联技术的使用以及纳米ZrO2颗粒的引入大大提高了复合膜的吸水率，氢氧化物电导率，机械性能和碱稳定性。特别是，IEC值为1.23 mmol g（-1）的CLQCPAES / 7.5％ZrO2膜表现出最佳的综合性能，并且是用于AEMFC的阴离子交换膜的良好潜在候选物。

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