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，必须从根本上理解固体电解质界面（SEI）上的锂交换动力学，并通过实用的电解质工程方案定制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（SSEs）具有降低甚至消除安全隐患、提升能量密度的独特优势。其中，混合固态电解质（HSEs）将有机聚合物电解质与无机固态电解质相结合，有望在发挥两者优势的同时解决各自的局限性。尽管前景广阔，HSEs仍存在内在复杂性，例如组分间的相互作用、填料比例与尺寸、成膜结构，以及这些因素如何影响其功能特性等问题，目前尚未被完全理解。因此，亟需开展基础研究，以在原子尺度上深入理解HSEs中的离子传输现象。