Proton exchange membrane fuel cell (PEMFC) is one of the most promising clean energy
conversion devices, whereas polybenzimidazole (PBI) polymer consider the potential
electrolyte membrane for high temperature. In this study, solid polymer electrolyte
membranes were studied the physiochemical occurrences such as proton conductivity, ion
transfer number, oxidative stability, tensile strength, TGA, and FTIR analysis. The PBI
copolymer-1 was shown the maximum proton conductivity (6.52 mS/cm) and ion transfer …