Data underlying the publication: Correlating Ion Dynamics with Structure: From Liquid to Hybrid Solid Electrolytes

To advance lithium metal batteries, it is essential to develop a fundamental understanding of Li exchange kinetics across the SEI, and implement practical electrolyte engineering solutions to tailor the structure and properties of SEI, as well as improve battery safety. Compared to liquid electrolytes, solid-state electrolytes (SSEs) have the unique advantage of lowering or even eliminating safety concerns and improving energy density. Among them, hybrid solid electrolytes (HSEs), which combine an organic polymer electrolyte with an inorganic solid electrolyte, have the potential to leverage the strengths of both types while addressing their individual limitations. Despite their promising prospects, HSEs present intrinsic complexities, such as the interaction between the components, filler ratios and sizes, and film-forming structures, and how these impact their functional properties, which are not yet thoroughly understood. Thus, fundamental research is critically required to better understand the ion transport phenomena in HSEs at an atomic-scale

为推动锂金属电池的发展，亟需建立对固体电解质中间相（Solid Electrolyte Interphase，SEI）两侧锂交换动力学的基础认知，并开发实用的电解质工程方案，以调控SEI的结构与性能，同时提升电池安全性。与液态电解质相比，固态电解质（Solid-State Electrolytes，SSEs）具备独特优势，可降低甚至彻底消除安全隐患，同时提升电池能量密度。其中，兼具有机聚合物电解质与无机固态电解质优势的混合固态电解质（Hybrid Solid Electrolytes，HSEs），有望在融合两类电解质优点的同时，克服各自的局限性。尽管混合固态电解质应用前景可观，但其本身存在诸多内在复杂性——例如组分间的相互作用、填料比例与粒径，以及成膜结构，且目前尚未完全厘清这些因素如何影响其功能特性。因此，亟需开展基础研究，以在原子尺度上更好地理解混合固态电解质内的离子输运现象。