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Understanding fast-ion conduction in solid electrolytes
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DOI：10.1098/rsta.2019.0451.png)
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摘要
En 中文
The ability of some solid materials to exhibit exceptionally high ionic conductivities has been known since the observations of Michael Faraday in the nineteenth century (Faraday M. 1838 Phil. Trans. R. Soc. 90), yet a detailed understanding of the atomic-scale physics that gives rise to this behaviour remains an open scientific question. This theme issue collects articles from researchers working on this question of understanding fast-ion conduction in solid electrolytes. The issue opens with two perspectives, both of which discuss concepts that have been proposed as schema for understanding fast-ion conduction. The first perspective presents an overview of a series of experimental NMR studies, and uses this to frame discussion of the roles of ion-ion interactions, crystallographic disorder, low-dimensionality of crystal structures, and fast interfacial diffusion in nanocomposite materials. The second perspective reviews computational studies of halides, oxides, sulfides and hydroborates, focussing on the concept of frustration and how this can manifest in different forms in various fast-ion conductors. The issue also includes five primary research articles, each of which presents a detailed analysis of the factors that affect microscopic ion-diffusion in specific fast-ion conducting solid electrolytes, including oxide-ion conductors Gd2Zr2O7 and Bi4V2O11, lithium-ion conductors Li6PS5Br and Li3OCl, and the prototypical fluoride-ion conductor beta-PbF2. This article is part of the Theo Murphy meeting issue 'Understanding fast-ion conduction in solid electrolytes'.
Keyword:
fast-ion conduction
superionic conductivity
solid electrolytes
diffusion
solid-state ionics
期刊
P
IF:
3.7
论文数:
7.8K
被引数:
2.8W
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