The increased demand of electronic devices promotes the development of advanced and more efficient energy storage devices,such as batteries.Lithium-ion batteries(LIBs)are the most studied battery sys-tems due to their high performance.Among the different battery components,the separator allows the control of lithium ion diffusion between the electrodes.To overcome some drawbacks of liquid elec-trolytes,including safety and environmental issues,solid polymer electrolytes(SPEs)are being devel-oped.In this work,a UV photocurable polyurethane acrylate(PUA)resin has been blended with lithium bis(trifluoromethanesulfonyl)imide(LiTFSI)up to 30 wt％LiTFSI content to reach a maximum ionic conductivity of 0.0032 mS/cm at room temperature and 0.09 mS/cm at 100℃.Those values allowed applying the developed materials as photocurable SPE in Swagelok type Li/C-LiFePO4 half-cells,reaching a battery discharge capacity value of 139 mAh.g-1 at C/30 rate.Those results,together with the theoret-ical studies of the discharge capacity at different C-rates and temperatures for batteries with LiTFSI/PUA SPE demonstrate the suitability of the developed photocurable SPE for LIB applications.