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1. (WO2018038164) SULFIDE SOLID ELECTROLYTE

Pub. No.:    WO/2018/038164    International Application No.:    PCT/JP2017/030149
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Thu Aug 24 01:59:59 CEST 2017
IPC: C04B 35/547
C01B 33/00
H01B 1/06
H01M 6/18
H01M 10/0562
Applicants: TOKYO INSTITUTE OF TECHNOLOGY
国立大学法人東京工業大学
Inventors: KANNO, Ryoji
菅野 了次
HIRAYAMA, Masaaki
平山 雅章
SUZUKI, Kota
鈴木 耕太
SUN, Yulong
スン ユロン
HORI, Satoshi
堀 智
Title: SULFIDE SOLID ELECTROLYTE
Abstract:
Provided is a sulfide solid electrolyte material which has a composition that does not contain Ge, while having a smaller Li content than conventional sulfide solid electrolyte materials, and which has both lithium ion conductivity and chemical stability at the same time. A sulfide solid electrolyte which has a crystal structure represented by composition formula (Li3.45+β-4αSnα)(Si0.36Sn0.09)(P0.55-βSiβ)S4 (wherein α ≤ 0.67, β ≤ 0.33 and 0.43 < α + β (provided that 0.23 < α ≤ 0.4 when β = 0.2 and 0.13 < α ≤ 0.4 when β = 0.3 may be excluded)), or a crystal structure represented by composition formula Li7+γSiγP1-γS6 (wherein 0.1 ≤ γ < 0.3).