Here we report gel polymer electrolytes (GPEs) formed by the film casting of the solution containing poly(ethylene glycol) methyl ether methacrylate (PEGMA) and trimethylolpropane ethoxylate triacrylate (ETPTA) with poly(vinylidene fluoride-co-hexafluoropropylene (PVDF-HFP), followed by the thermal radical polymerization and liquid electrolyte absorption. The resulting GPEs show a semi-interpenetrating polymer network (SIPN) structure that provides film robustness which is investigated by morphological, structural, and electrochemical studies. Particularly, the GPE prepared by the composition of 98 mol% PEGMA and 2 mol% ETPTA in the presence of 40 wt% of PVDF-HFP (relative to total amount of PEGMA and ETPTA) manifests large ionic conductivity (1.46 × 10⁻³ S cm⁻¹) and tensile strength (6.28 MPa at elongation at break of 156%) at a room temperature due to large uptake of the liquid electrolyte (up to 267%) and SIPN structure. We also verify that the GPE is electrochemically stable up to 4.7 V (vs. Li/L⁺), suggesting it holds the great promise of a polymer electrolyte membrane for energy storages such as rechargeable batteries or supercapacitors.

在这里，我们报告了通过对包含聚乙二醇偏二氟乙烯-共-六氟丙烯（PVDF-HFP）的聚（乙二醇）甲基醚甲基丙烯酸甲酯（PEGMA）和三羟甲基丙烷乙氧基化三丙烯酸酯（ETPTA）进行薄膜浇铸而形成的凝胶聚合物电解质（GPE ）继之以热自由基聚合和液体电解质吸收，所得的GPE具有半互穿聚合物网络（SIPN）结构，该结构可提供薄膜坚固性，可通过形态学，结构和电化学研究对其进行研究。在40 wt％的PVDF-HFP（相对于PEGMA和ETPTA的总量）存在下，98 mol％PEGMA和2 mol％ETPTA的离子电导率大（1.46×10 ^-3 S cm ^-1）和室温下的拉伸强度（断裂伸长率156％时为6.28 MPa）（由于液体电解质的摄入量最多（达267％）和SIPN结构）。我们还验证了GPE在高达4.7 V（相对于Li / L ⁺）下具有电化学稳定性，这表明它具有用于储能电池（例如可充电电池或超级电容器）的聚合物电解质膜的广阔前景。