The Sulfonated Poly (Ether Ether Ketone) (sPEEK) is used in many of the developments of polymer electrolyte membranes for fuel cells. In this publication, it is proven that the water in the sPEEK membrane creates channels in the sulfonated clusters by interacting with the sulfonic groups, and changing the glass transition temperature (Tg) of the material. It is shown that, for conductivity, apart from water in the membrane, order is needed in the water channels because it has an impact on how fast the protons pass through the membrane. This research focuses on how various thermal treatment, performed under a pre‐stated conditioning; allow the free alignment of the inner phases, influencing their order. It is demonstrated how is possible to use of differential calorimetry, dielectric measurements and X‐ray to follow these changes, and how to used Broadband Dielectric Spectroscopy to forecast the most optimal and stable thermal treatment for the highest proton conduction in sPEEK. The methodology is also test successfully on a hybrid sPEEK/Boron Phosphate membrane.

中文翻译：

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通过介电光谱监测的热处理方法优化质子传导sPEEK膜

磺化聚醚醚酮（sPEEK）用于燃料电池聚合物电解质膜的许多开发中。在该出版物中，已证明sPEEK膜中的水通过与磺酸基相互作用并改变材料的玻璃化转变温度（Tg），在磺化簇中形成通道。已经表明，为了获得导电性，除了膜中的水之外，在水通道中还需要有序，因为这对质子穿过膜的速度有影响。这项研究的重点是在预定条件下如何进行各种热处理。允许内部各相自由对齐，从而影响其顺序。演示了如何使用差示量热法，电介质测量和X射线跟踪这些变化，以及如何使用宽带介电谱来预测sPEEK中最高质子传导的最佳和最稳定的热处理。该方法也已在sPEEK /磷酸硼混合膜上成功测试。