Lithium superionic conductors with corner-sharing frameworks

doi:10.1038/s41563-022-01222-4

Lithium superionic conductors with corner-sharing frameworks

2022-03-31

110

OA

AI

DOI：10.1038/s41563-022-01222-4

Original

Original request for help

Save

Abstract

En 中文

Superionic lithium conductivity has only been observed in a few classes of materials, mostly in thiophosphates but rarely in oxides. Corner-sharing connectivity in an oxide crystal structure framework is now shown to promote superionic conductivity. Superionic lithium conductivity has only been discovered in a few classes of materials, mostly found in thiophosphates and rarely in oxides. Herein, we reveal that corner-sharing connectivity of the oxide crystal structure framework promotes superionic conductivity, which we rationalize from the distorted lithium environment and reduced interaction between lithium and non-lithium cations. By performing a high-throughput search for materials with this feature, we discover ten new oxide frameworks predicted to exhibit superionic conductivity-from which we experimentally demonstrate LiGa(SeO3)(2) with a bulk ionic conductivity of 0.11 mS cm(-1) and an activation energy of 0.17 eV. Our findings provide insight into the factors that govern fast lithium mobility in oxide materials and will accelerate the development of new oxide electrolytes for all-solid-state batteries.

Keywords:

IONIC-CONDUCTIVITY

CRYSTAL-STRUCTURE

INTERFACE STABILITY

SOLID ELECTROLYTES

LI

DEPENDENCE

DYNAMICS

LISICON

SIZE

Lithium superionic conductors with corner-sharing frameworks

Abstract

Journal

Organization