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基于PVDF-SPA移植共聚物的功能性多孔质子交换膜的结构特征和物理化学特性

Maria Ponomar¹, Valentina Ruleva¹, Veronika Sarapulova¹

¹Department of Physical Chemistry, Kuban State University, 350040 Krasnodar, Russia.

International journal of molecular sciences

|January 11, 2024

概括

新的化质子交换膜 (PEMs) 的性能与燃料电池的商业选择相提并论. 这些新型膜具有较低的电阻和独特的多孔结构,表明了先进能源应用的潜力.

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:

质子交换膜 (PEM) 是燃料电池中的关键组件.
开发高性能,具有成本效益的PEM是一种持续的研究挑战.
化聚合物为PEM应用提供了理想的性能.

研究的目的:

为了合成和描述用于PEM燃料电池应用的新型化移植共聚合物.
研究新膜的形态学,物理性质和电化学性能.
将开发的膜的特性与商业替代品进行比较.

主要方法:

自由基共聚化脱化聚乙烯化物 (D-PVDF),3-硫烯酸 (SPA) 和1H,1H,2H-超-1-烯 (PFH) 的自由基共聚.
使用小角X射线散射 (SAXS),广角X射线散射 (WAXS),扫描电子显微镜 (SEM) 和差分扫描热量计 (DSC) 的表征.
电化学表征包括膜面积电阻和离子导电性测量.

主要成果:

合成的化PEM具有17% (PEM-RCF) 和16% (PEM-RCF-2) 的结晶度.
观察到5-6nm的晶石颗粒和从20到140nm的表面孔.
实现了0.9 Ωcm2的最小膜面积电阻,与Nafion®和CJMC膜相比.
证明的电化学行为与商业的阴离子交换膜一致.

结论:

开发的化移植共聚合物PEM显示了燃料电池应用的有希望的性能.
独特的多孔结构影响离子导电性,类似于轨道蚀刻膜.
这些新型的PEM为现有的商用阴子交换膜提供了可行的替代方案.

关键词:

导电性的导电性是指导电的导电性.扩散的透性扩散的透性电化学表征的电化学表征能源的生产和储存.燃料电池燃料电池的使用情况植入共聚合物植入共聚合物离子运输离子运输离子运输孔隙结构是多孔结构.质子交换膜中的质子交换

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