Issue 68, 2020, Issue in Progress

Ruddlesden–Popper phases of lithium-hydroxide-halide antiperovskites: two dimensional Li-ion conductors

Abstract

Lithium-oxide-halide and lithium-hydroxide-halide antiperovskites were explored for potential electrolytes in all-solid Li-ion batteries. A single-phase sample of the Ruddlesden–Popper (RP) series of compounds, LiBr(Li2OHBr)2 with double antiperovskite Li2OHBr layers and rigid rock-salt type LiBr layers, was obtained. Li+-ion vacancies are introduced in the double antiperovskite Li2OHBr layers but not in the LiBr layers and induce two-dimensional Li-ion conduction with low activation energy by mediating Li-ion hopping. In contrast to the Br-containing RP phase, Cl-containing Li-oxide-halide and Li-hydroxide-halide RP phases cannot be crystallized due to the structural mismatch between the antiperovskite layers and rigid LiCl layers.

Graphical abstract: Ruddlesden–Popper phases of lithium-hydroxide-halide antiperovskites: two dimensional Li-ion conductors

Supplementary files

Article information

Article type
Paper
Submitted
11 Sep 2020
Accepted
06 Nov 2020
First published
17 Nov 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 41816-41820

Ruddlesden–Popper phases of lithium-hydroxide-halide antiperovskites: two dimensional Li-ion conductors

A. Koedtruad, M. Amano Patino, Y. Chuang, W. Chen, D. Kan and Y. Shimakawa, RSC Adv., 2020, 10, 41816 DOI: 10.1039/D0RA07803D

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