Solid‐state electrolytes have emerged as a promising alternative to existing liquid electrolytes for next generation Li‐ion batteries for better safety and stability. Of various types of solid electrolytes, composite polymer electrolytes exhibit acceptable Li‐ion conductivity due to the interaction between nanofillers and polymer. Nevertheless, the agglomeration of nanofillers at high concentration has been a major obstacle for improving Li‐ion conductivity. In this study, we designed a three‐dimensional (3D) nanostructured hydrogel‐derived Li_0.35La_0.55TiO₃ (LLTO) framework, which was used as a 3D nanofiller for high‐performance composite polymer Li‐ion electrolyte. The systematic percolation study revealed that the pre‐percolating structure of LLTO framework improved Li‐ion conductivity to 8.8×10⁻⁵ S cm⁻¹ at room temperature.

中文翻译：

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3D纳米结构水凝胶框架衍生的高性能复合聚合物锂离子电解质

固态电解质已成为下一代锂离子电池现有液态电解质的有前途的替代品，具有更好的安全性和稳定性。在各种类型的固体电解质中，由于纳米填料和聚合物之间的相互作用，复合聚合物电解质表现出可接受的锂离子传导性。然而，高浓度的纳米填料的团聚一直是提高锂离子电导率的主要障碍。在这项研究中，我们设计了三维（3D）纳米结构水凝胶衍生的Li _0.35 La _0.55 TiO ₃（LLTO）框架，用作高性能复合聚合物锂离子电解质的3D纳米填料。系统的渗滤研究表明，LLTO骨架的预渗滤结构在室温下将锂离子的电导率提高到8.8×10 ^-5  S cm ^-1。