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基于扭曲的多 (p-terphenyl-co-m-terphenyl) 基离子交换膜用于水电解

Shuhuan Zhang¹, Wenli Ma¹, Lin Tian¹

¹State Key Laboratory of Chemical Resource Engineering, Institute of Modern Catalysis, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.

ACS applied materials & interfaces

|January 31, 2024

概括

具有平衡结构的新型离子交换膜 (AEM) 显示出出色的机械强度和高离子导电性. 这些材料在高效和耐用的水电解应用中表现出有希望的性能.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
聚合物化学聚合物化学

背景情况:

阳离子交换膜 (AEM) 对于电化学应用,如水电解,至关重要.
提高AEM的机械性能和离子导电性对于提高性能至关重要.
在AEM中平衡脊柱形状可以优化它们与子的相互作用.

研究的目的:

为了提高AEMs的机械和水电解性能.
为了研究基异构体比对AEM特性的影响.
开发具有更好的离子传输和耐久性的AEM.

主要方法:

合成基于多 (m-terphenyl-co-p-terphenyl) 的AEMs,具有不同的比.
描述膜的机械性能,包括拉伸强度和破裂时的延长.
在高温下评估离子导电性.
在运行条件下评估水电解中的电化学性能.

主要成果:

基于poly (m-terphenyl-co-p-terphenyl) 的AEM显示出出色的机械性能,m-p-TP-40-BOP-ASU膜显示出最高的抗拉强度 (75.72 MPa) 和破裂时的延伸 (16.07%).
由于有效的离子导电通道,m-p-TP-40-BOP-ASU膜在80°C时达到137.14mS cm-1的高离子导电性.
这种膜在60°C时达到电流密度为1.96 A cm−2,并在112小时的测试中表现出良好的电化学耐用性.

结论:

基于聚 (m-terphenyl-co-p-terphenyl) 的AEM中调整后的烯酸比率有效地平衡了骨干形状,从而产生了优异的机械和电化学性能.
开发的AEM由于其高性能和耐用性,在离子交换膜水电解器中表现出有前景的应用前景.
这些发现凸显了定制聚合物结构在清洁能源应用中推进AEM技术的潜力.

关键词:

离子交换膜的离子交换膜自由体积的自由体积.聚 (聚) () () () () ) () () () () () () () ) () () ) () ) () ) () () ) () ) () ) () ) () ) () ) () ) () ) () ) () ) () )螺旋环酸是螺旋环酸的组成部分.这是一个扭曲的结构结构.水的电解是水的电解.

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