Exploring inductive effects in superionic conductors

探索超离子导体中的感应效应

• 批准号: 498761047
• 负责人: Professor Dr. Wolfgang Zeier
• 金额: --
• 依托单位: Institut für Anorganische und Analytische Chemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/498761047?language=en
• 关键词: Exploring; inductive; effects; superionic; conductors

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.

超离子导体是一种类似于液体电解液的快速离子传导材料，目前正在研究用于固态电池。固体离子导体的典型研究集中在影响材料结构的取代，如增加扩散路径的宽度或增加载流子密度。然而，人们对成键相互作用的强度对离子传输的影响知之甚少。最近，有一种观点认为感应效应会影响离子传输。在这个相当直观的假设中，中心阳离子的电负性被认为影响多阴离子基团的平均电荷密度，进而影响阴离子骨架和可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效应的这一想法，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，或者如果它只是被用来解释材料中意想不到的趋势。这项工作旨在更好地从根本上理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输运。作为最后的方法，这项工作将评估感应效应是否能为离子导电固体提供一种新的有希望的设计原则。