METHOD FOR PRODUCING SULFIDE SOLID ELECTROLYTE

A method for producing a sulfide solid electrolyte, comprising a firing step of firing a raw material containing Li2S in a hydrogen sulfide-containing atmosphere at a temperature of 300°C or higher, Li2S having a purity of 50 to 90% by mass at the start of firing. Li2S may contain impurities includi...

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Bibliographische Detailangaben
Hauptverfasser:	HYAKUTAKE, Masaru, ITO, Takahiro, MIYASHITA, Norihiko
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CHEMISTRY COMPOUNDS THEREOF CONDUCTORS ELECTRICITY INORGANIC CHEMISTRY INSULATORS METALLURGY NON-METALLIC ELEMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
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Beschreibung
Zusammenfassung:	A method for producing a sulfide solid electrolyte, comprising a firing step of firing a raw material containing Li2S in a hydrogen sulfide-containing atmosphere at a temperature of 300°C or higher, Li2S having a purity of 50 to 90% by mass at the start of firing. Li2S may contain impurities including at least one of LiOH, Li2O, LiHCO3, and Li2CO3. In the firing step, it is preferable that a concentration of a hydrogen sulfide in the hydrogen sulfide-containing atmosphere is 50 volume% or more. It is preferable that the raw material further contains P2S5 and LiX (X represents at least one type of elemental halogen), and the sulfide solid electrolyte has an argyrodite-type crystal structure.