Abstract
We described the synthesis and properties of SPEEK/inorganic fillers (silicotunstic acid/acid functionalized polysilsesquioxane hybrid)composite membranes with the goal of increasing the proton conductivity. The membranes were characterized to determine the thermal stability, water uptake as well as proton conductivity. The flexible, tough, and transparent free-standing membranes were successfully obtained by the solution casting method. The results showed that the composited membranes possess excellent thermal stability as well as high proton conductivity over a wide range of relative humidity (30-95%RH). Therefore, these materials proved to be promising materials for use in fuel cell application as polymer electrolyte membranes.
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