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Ionic liquid (1-methyl-3-propylimidazolium iodide) (L) encapsulated in a copper-established metal organic framework (M) was synthesized using 2,6-napthalene dicarboxylic acid as the organic linker. The prepared additive was incorporated into a sulfonated polystyrene-blockpoly(ethylene-ranbutylene)-block-polystyrene (S-PSEBS) polymer. Thermal and chemical stabilities of the altered membranes were used to investigate the effect of the ionic liquid in S-PSEBS/ML composites. The physicochemical features of the membranes were investigated in depth in order to determine their appropriateness for fuel cell applications. Tensile strengths of the prepared composites were found to be between 18 and 25 MPa. The S-PSEBS/ML1:3 membrane exhibited the highest proton conductivity of 0.0310 S cm −1 ; however, the S-PSEBS was restricted to 0.0165 S cm −1 . The incorporation of ML into an S-PSEBS increased both proton conductivity and oxidative stability. Hence, the reported S-PSEBS/ML membranes are feasible materials to be used in PEMFC as alternate electrolytes.

Novel proton exchange membranes consist of sulfonated polystyrene ethylene butylene polystyrene (sPSEBPS), sulfonated poly ether sulfone (SPES) with hexagonal boron nitride (hBN) was fabricated by facile solution casting technique. The...

This research work focuses on developing a robust polymer electrolyte membrane (PEM) with high proton efficiency toward proton exchange membrane fuel cells (PEMFCs). In this study, poly ether sulfone (PES) was sulfonated by chlorosulfonic acid to yield sulfonated poly ether sulfone (SPES) followed by incorporation with bismuth-based additives such as bismuth trimesic acid (BiTMA) and bismuth molybdenum oxide (Bi 2 MoO 6 ). The composite membrane was thoroughly investigated for its structural and physicochemical properties such as FT-IR, SEM, TGA, contact angle, water uptake, oxidative stability, ion-exchange capacity, and swelling ratio. Incorporation of additives into the polymer was confirmed by XPS and XRD analysis. The proton conductance of the pristine SPES is 4.19 × 10 −3 S cm −1 , whereas that of the composite membrane SPES/BiTMA-10 is 10 × 10 −3 S cm −1 and that of SPES/Bi 2 MoO 6 -15 is 7.314 × 10 −3 S cm −1 ; both the composite membranes exhibit higher proton conductivity than the pristine SPES membrane. The physicochemical characteristics and impedance measurements of the electrolyte reported can be viable to the PEM membrane.