Preparation and characterization of lithium ion-conducting oxysulfide glasses

Citation
T. Minami et al., Preparation and characterization of lithium ion-conducting oxysulfide glasses, SOL ST ION, 136, 2000, pp. 1015-1023
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE IONICS
ISSN journal
0167-2738 → ACNP
Volume
136
Year of publication
2000
Pages
1015 - 1023
Database
ISI
SICI code
0167-2738(200011)136:<1015:PACOLI>2.0.ZU;2-Y
Abstract
The properties and structure of the lithium ion-conducting oxysulfide glass es in the systems Li2S-SiS2-LichiMOgamma (LichiMOgamma: lithium ortho-oxosa lt, M = Si, P, Ge, B, Al, Ga and In) are reviewed. The Li2S-SiS2 glass adde d with small amounts of LichiMOgamma exhibited high glass stability against crystallization, high conductivity of 10(-3) S cm(-1) at room temperature, and wide electrochemical window. Further addition of Li-chi,MOgamma reduce d these superior properties in any system. High-resolution solid-state NMR and X-ray photoelectron spectroscopy revealed that the silicon atoms coordi nated with both bridging oxygen atoms and nonbridging sulfur atoms were mai nly present in the glasses with small amounts of LichiMOgamma. The presence of these unique structural units brought about high conductivities and hig h thermal stability of these glasses. The solid state battery with the oxys ulfide glass worked as a lithium secondary battery and performed excellent cycling behaviors. (C) 2000 Elsevier Science B.V. All rights reserved.