Inorganic solid-state electrolytes have high ionic conductivity and stability, which demonstrate the promising application in building solid batteries excepting their poor interface compatibility. Hence, making the solid electrolytes flexible, such as the combination with polymer is an important strategy in mitigating such problem. In this context, a robust membrane is fabricated with nanosized Li_6.4La₃Zr_1.4Ta_0.6O₁₂ particles being filled into the porous PVDF-HFP as gel polymer electrolyte (GPE). This membrane displays a high ionic conductivity of 3.57 × 10⁻⁴ S cm⁻¹, a large Li-ion transference number of 0.62, as well as the good mechanical strength and thermal stability. The as prepared Li/GPE/Li symmetric cell demonstrates an underlying electrochemical activation in stabilizing the membrane-electrode interface, which seems to be balancing the trade-off between the Li diffusion and side reactions at the interface. The fabricated LiFePO₄|GPE|Li coin cell delivers a high Coulombic efficiency of 98%, a good rate capability at 2C (about 120 mAh g⁻¹) and capacity retention of 92% after 110 cycles (150 mAh g⁻¹, 0.4C) at room temperature. This important design provides a rewarding avenue to address the interface compatibility and develop composite electrolytes for high performance Li metal batteries.

无机固态电解质具有高离子电导率和稳定性，除了界面相容性差之外，还显示出在建筑固体电池中的有前途的应用。因此，使固体电解质具有柔韧性，例如与聚合物的结合是缓解这种问题的重要策略。在这种情况下，制造了一种坚固的膜，其中纳米级Li _6.4 La ₃ Zr _1.4 Ta _0.6 O ₁₂颗粒作为凝胶聚合物电解质（GPE）填充到了多孔PVDF-HFP中。该膜显示出3.57×10 ^-4  S cm ^-1的高离子电导率，0.62的大锂离子迁移率以及良好的机械强度和热稳定性。所制备的Li / GPE / Li对称电池在稳定膜电极界面方面显示出潜在的电化学活化作用，这似乎在平衡Li扩散和界面副反应之间取得了平衡。所制造的LiFePO ₄ | GPE |锂硬币电池提供的98％的高库仑效率，在2C良好的倍率性能（约120毫安克^-1）和110个周期（150毫安克后的92％的容量保持率^-1，0.4 C）在室温下。这一重要设计为解决界面兼容性和开发用于高性能锂金属电池的复合电解质提供了有益的途径。