Development of sulfonated poly (ether ether ketone) triaminopyrimidine nanocomposite membrane for direct methanol fuel cell

摘要: Methanol crossover problem, which significantly occurred in direct methanol fuel cell (DMFC) using commercial Nafion® membrane, encouraged number of studies on the development novel proton exchange membrane (PEM). This research was conducted to synthesize and characterize polymer-inorganic nanocomposite sulfonated poly (ether ether ketone) (SPEEK) membranes filled with Cloisite15A® clay by introducing 2,4,6-triaminopyrimidine (TAP) as a compatibilizer for application. The influences different degree sulfonation (DS) SPEEK TAP loadings properties were investigated. 63% DS (SP63) found be optimum based its higher overall characteristics compared other DS. Therefore, this study, SP63 chosen modified adding various amounts Cloisite15A®. effect loading physical studied. From results, mixed 2.5 wt. % (SP63/2.5CL) has been identified best composite formulation. Subsequently, further incorporated into SP63/2.5CL incorporation characterized their thermal physico-chemical such stability, ion capacity (IEC), water uptake, mechanical conductivity permeability. A complete exfoliated structure resultant confirmed x-ray diffraction (XRD) supported field emission scanning electron microscopy (FESEM). SPEEK/Cloisite15A®/TAP parent commercially Nafion®112 membranes. highest power density achieved 39.4 mWcm-2, is 46% membrane. Due promising improved performance, SP63/2.5CL/5.0TAP could polymer electrolyte applied DMFC