Herein, we present the results of sulfonated polyaniline (SPANI) and sulfonated poly(ether sulfone) (SPES) composite polymer electrolyte membranes. The membranes are established for high-temperature proton conductivity and methanol permeability to render their applicability. Composite membranes have been prepared by modifying the SPES matrix with different concentrations of SPANI (e.g., 1, 2, 5, 10, and 20 wt %). Structural and thermomechanical characterizations have been performed using the transmission electron microscopy, differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical analyzer techniques. Physicochemical and electrochemical properties have been evaluated by water uptake, ion-exchange capacity, dimensional stability, and proton conductivity. Methanol permeability experiment was carried out to analyze the compatibility of prepared membranes toward direct methanol fuel cell application and found the lowest methanol permeability for PAS-5. Also, the membranes reveal excellent thermal, mechanical, and physicochemical properties for their application toward high-temperature electromembrane processes.

中文翻译：

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丰富的离子纳米通道增强了稳定的SPES / SPANI复合聚合物电解质膜的电化学性能

在这里，我们介绍了磺化聚苯胺（SPANI）和磺化聚（醚砜）（SPES）复合聚合物电解质膜的结果。建立该膜的目的是提供高温质子传导性和甲醇渗透性，以使其具有适用性。已经通过用不同浓度的SPANI（例如1、2、5、10和20wt％）修饰SPES基质来制备复合膜。使用透射电子显微镜，差示扫描量热法，热重分析和动态力学分析仪技术已经进行了结构和热力学表征。已通过吸水率，离子交换容量，尺寸稳定性和质子传导性评估了理化和电化学性质。进行了甲醇渗透性实验，分析了制备的膜对直接甲醇燃料电池应用的相容性，发现PAS-5的最低甲醇渗透性。此外，该膜还具有优异的热，机械和物理化学特性，可用于高温电膜工艺。