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 systems 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 electrolytes, including safety and environmental issues, solid polymer electrolytes (SPEs) are being developed. 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 °C. 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 theoretical 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.

电子设备需求的增长促进了诸如电池之类的先进且更有效的能量存储设备的发展。锂离子电池（LIB）由于其高性能而成为研究最多的电池系统。在不同的电池组件中，隔板可控制锂离子在电极之间的扩散。为了克服液体电解质的一些缺点，包括安全和环境问题，正在开发固体聚合物电解质（SPE）。在这项工作中，将紫外光固化聚氨酯丙烯酸酯（PUA）树脂与双（三氟甲磺酰基）酰亚胺（LiTFSI）锂共混到LiTFSI含量不超过30 wt％，以在室温和0.09 mS下达到0.0032 mS / cm的最大离子电导率。 / cm在100°C。_4个半电池，在C / 30速率下达到139 mAh.g ^-1的电池放电容量。这些结果，再加上对使用LiTFSI / PUA SPE的电池在不同C速率和温度下的放电容量的理论研究，证明了开发的光固化SPE适用于LIB应用。