Synthesis and characterization of SPEEK proton exchange membranes modified with sulfonated polystyrene and phosphotungstic acid to be used in fuel cell
Volume Title: 1
1دانشگاه صنعتی نوشیروانی بابل
2گروه آموزشی مهندسی کاتالیست و ترموسینتیک، دانشکده مهندسی شیمی، دانشگاه صنعتی نوشیروانی بابل، شهرستان بابل، استان مازندران
In this study, the synthesis of the proton exchange membranes based on SPEEK and its Homogenous mixture with sulfonated polystyrene and Phosphotungstic acid for use in the fuel cells was described. The reason for using these additives was to create additional proton pathways and thus increase the ability of the proton transfer in the SPEEK nanocomposite membranes. For this purpose, the SPEEK and SPS synthesis process were initially explained, and then the methods of preparing membranes were presented. The characterization tests of proton conductivity, DS, IEC, Water uptake, Contact angle, Water crossover, MFC, SEM and FTIR were conducted, and the results of these experiments were presented and analyzed for the above-mentioned membranes. Also, a comparison of proton conductivity and water uptake values of the produced membranes and Nafion membrane was presented separately. The results showed that with adding mentioned additives to the SPEEK polymer, the proton conductivity, Water uptake and durability of the produced membranes has significantly increased compared to Nafion and pure SPEEK membrane.