Exploring inductive effects in superionic conductors

超离子导体是一种提供与液体电解质类似的快速离子传导的材料，目前正在研究将其用于固态电池。固体离子导体的典型研究集中在影响材料结构的取代上，如增加扩散路径的宽度或增加载流子密度。然而，对于成键相互作用的强度对离子传输的影响程度，我们知道的并不多。最近，人们提出了感应效应影响离子输运的观点。在这个相当直观的假设中，中心阳离子的电负性被认为会影响聚阴离子基团的平均电荷密度，而聚阴离子基团的平均电荷密度反过来又会影响阴离子框架和移动阳离子之间的静电键相互作用。最近的工作证实了固体电解质感应的这一想法，这一提议是基于探索固体电解质感应效应是否确实是在各种固体离子导体中发现的影响，或者它是否只是用来解释材料中意想不到的趋势。这项工作旨在更好地了解成键影响如何影响静电相互作用以及固体离子导体中的离子传输。作为最后的方法，这项工作将评估感应效应是否可以为离子导电固体提供一个新的有前途的设计原则。

Superionic conductors are materials that provide fast ion conduction similar to liquid electrolytes, and are currently investigated for the use in solid-state batteries. The typical investigation in solid ionic conductors focusses on substitutions that affect the structure of materials such as increasing the width of diffusion pathways or increasing the charge carrier density. However, not much is known how much the strength of bonding interactions affects the ionic transport. Recently, the idea that inductive effects affect ionic transport. In this rather intuitive hypothesis, the electronegativity of a central cation is thought to affect the average charge density of a polyanionic group, which in turn affects the electrostatic bonding interaction between the anionic framework and the mobile cations. Recent work has corroborated this idea of a solid electrolyte inductive and this proposal is based on exploring if a solid electrolyte inductive effect is indeed an influence found in a variety of solid ion conductors, or if it is just used to explain unexpected trends in materials. This work aims at a better fundamental understanding of how bonding influences affect electrostatic interactions and with it the ionic transport in solid ionic conductors. As a final approach, the work will evaluate if inductive effects can deliver a new promising design principle for ionically conducting solids.