Elaboration and characterization of hybrid polymer electrolytes Nafion-TiO2 for PEMFCs

► Nafion hybrid membrane containing TiO2 nano-particles elaborated by sol-gel technique in micro wave. ► X-ray diffraction demonstrated the crystallization of TiO2 in anatase and rutile phases. ► Hybrids membranes showed high water uptake. ► The electrochemical impedance spectroscopy of pure and hybrid membrane were investigated.