Stabilizing High-Temperature α-Li3PS4 by Rapidly Heating the Glass

Takuya Kimura; Takeaki Inaoka; Ryo Izawa; Takumi Nakano; Chie Hotehama; Atsushi Sakuda; Masahiro Tatsumisago; Akitoshi Hayashi

doi:10.1021/jacs.3c03827

Stabilizing High-Temperature α-Li₃PS₄ by Rapidly Heating the Glass

J Am Chem Soc. 2023 Jul 5;145(26):14466-14474. doi: 10.1021/jacs.3c03827. Epub 2023 Jun 20.

Authors

Takuya Kimura¹, Takeaki Inaoka¹, Ryo Izawa¹, Takumi Nakano¹, Chie Hotehama¹, Atsushi Sakuda¹, Masahiro Tatsumisago¹, Akitoshi Hayashi¹

Affiliation

¹ Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.

PMID: 37340711
DOI: 10.1021/jacs.3c03827

Abstract

High-temperature metastable phases exhibit superior characteristics compared to those of thermodynamically stable phases at room temperature. Although optimization of the compositions and crystallizations from glasses contribute to the stabilization of metastable phases at room temperature, the stabilization of the high-temperature α-Li₃PS₄ phase is not yet reported. α-Li₃PS₄ was successfully stabilized at room temperature, instead of the middle-temperature β-Li₃PS₄ phase, via rapid heating to crystallize the Li₃PS₄ glass. The obtained electrolyte exhibited a high ionic conductivity of >10^-3 S cm^-1 at room temperature. The crystallization of the glass via rapid heating overcame the thermodynamic limitations in the preparation of the metastable crystals. Further development of materials via nonequilibrium states should contribute to the design of high-performance materials.