The decent flexibility and processability of solid-state polymer electrolytes (SPEs) endow them with broad development prospects in the solid-state lithium-based batteries field. Nevertheless, the poor room-temperature ionic conductivity of SPEs severely hinders their practical applications. Herein, we design a functionalized poly (vinylidene fluoride) (PVDF)-based electrolyte, and an ionic conductivity elevation is achieved by directly introducing zeolitic imidazolate framework-90 (ZIF-90) as filler into SPE. The metal ion sites of ZIF-90 can adsorb TFSI⁻ with a large adsorption energy of −1.35 eV to facilitate the dissociation of LiTFSI. The SPE modified with ZIF-90 delivers the prominent ionic conductivity of 0.62 mS cm⁻¹ at 30 °C and the low activation energy of 0.20 eV. Simultaneously, cells fabricated with LiFePO₄ cathode exhibit the high specific discharge capacity of 118 mAh g⁻¹ after 300 cycles at 1 C (0.44 mA cm⁻²) at room temperature. This work provides an efficient and promising strategy of fabricating competitive SPEs for solid-state lithium-based batteries.

固态聚合物电解质（SPEs）良好的柔韧性和可加工性使其在固态锂基电池领域具有广阔的发展前景。然而，SPEs 较差的室温离子电导率严重阻碍了它们的实际应用。在此，我们设计了一种基于功能化聚偏二氟乙烯 (PVDF) 的电解质，并通过将沸石咪唑酯骨架 90 (ZIF-90) 作为填料直接引入 SPE 来提高离子电导率。ZIF-90 的金属离子位点可以吸附 TFSI ^-具有 -1.35 eV 的大吸附能，以促进 LiTFSI 的解离。用 ZIF-90 改性的 SPE 提供了 0.62 mS cm ^-1的显着离子电导率在 30 °C 和 0.20 eV 的低活化能下。同时，用 LiFePO ₄阴极制造的电池在室温下1 C (0.44 mA cm ^-2 ) 下循环 300 次后表现出 118 mAh g ^-1的高比放电容量。这项工作提供了一种有效且有前景的策略，可以为固态锂基电池制造具有竞争力的 SPE。