As a promising solution for solid-state batteries with high energy density and safety, understanding the mechanism of fast ion conduction in polymer-ceramic composite solid-state electrolytes (CSEs) is still a challenging task. Herein, we understand the enhanced ion conduction in CSEs using a series of ionic spectra. Ionic insight is extended to ion conduction in CSEs, resolving the mechanism of fast ion migration. With the cooperation of enhanced interface and filler ion conduction, the CSE with a conductive filler exhibits ionic conductivity higher than that of CSEs with insulating fillers. Volume and filler strategies of CSE design are proposed based on volcanic maps of conductivity. An equivalent circuit is established to describe the conduction mechanism of CSEs. Specifically, R_interface and R_filler are in parallel to describe the cooperation of interface and filler conduction. They are in series with R_bulk, which represents a competition between the fundamental matrix and enhanced interface conduction. The proposed conduction model is verified though the energy storage performance of solid-state batteries; a fast dynamic process promises a better rate performance and cycling stability of solid-state batteries. These results provide deep insights into fast ion conduction in ceramic-polymer CSEs, which are indispensable to develop high-performance solid-state batteries.

中文翻译：

---

量化体积策略和填充策略的离子贡献的多波段谱方法：增强聚合物固态电池的离子传输通道


作为一种有前途的高能量密度和安全性的固态电池解决方案，了解聚合物-陶瓷复合固态电解质 （CSE） 中的快速离子传导机制仍然是一项具有挑战性的任务。在此，我们使用一系列离子光谱了解了 CSE 中增强的离子传导。离子洞察力扩展到 CSE 中的离子传导，解决了快速离子迁移的机制。在增强界面和填充离子传导的配合下，带有导电填料的 CSE 表现出比带有绝缘填料的 CSE 更高的离子电导率。CSE 设计的体积和填充策略基于电导率的火山图提出。建立了一个等效电路来描述 CSE 的传导机制。具体来说，R_interface 和 R_filler 是并行的，以描述界面和填充物传导的配合。它们与 R_本体串联，这代表了基本矩阵和增强界面传导之间的竞争。通过固态电池的储能性能验证了所提出的传导模型;快速动态过程保证了固态电池更好的倍率性能和循环稳定性。这些结果为陶瓷聚合物 CSE 中的快速离子传导提供了深入的见解，这对于开发高性能固态电池是必不可少的。