Search International and National Patent Collections
|1. (WO2018038164) SULFIDE SOLID ELECTROLYTE|
|Applicants:||TOKYO INSTITUTE OF TECHNOLOGY
|Title:||SULFIDE SOLID ELECTROLYTE|
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).