In this study, a polypropylene (PP) mesh was used to prepare proton- and Li + conducting composite membranes for fuel cells and lithium rechargeable batteries, respectively. For the preparation of Li + conducting membrane, polypropylene mesh was first immersed in an electrolyte solution, which was composed of LiBF 4 and ethylene carbonate. Then the swollen membrane was immersed in an acetone solution of polyethylene glycol diacrylate (PEGDA), polyvinylidenefluoride-co-hexafluoro-propylene and photoinitiator. Finally, PP fabric was taken out from the solution and exposed to UV irradiation. Furthermore, proton conducting membranes were prepared by immersing the PP mesh into a mixture of vinyl phosphonic acid, PEGDA and photoinitiator. Afterwards, samples were cured under UV light. PP-reinforced membranes designed for fuel cell applications exhibited a room temperature conductivity of 3.3×10 -3 mS/cm, while UV-cured electrolyte for Li batteries showed ionic conductivities in the range of 1.61×10 -3 –5.4×10 -3 S/cm with respect to temperature. In addition, for lithium-doped composite polymer electrolyte (CPE), the electrochemical stability window was negligible below 4.75 V vs. Li/Li + . It is concluded that lithium-doped CPE has suitable electrochemical stability to allow the use of high-voltage electrode couples.