Abstract: A method for producing a sulfide solid electrolyte having an argyrodite-type crystal structure may involve: mixing a raw material containing elemental phosphorus at an integrated power of 0.5 kWh/kg or more, and heat-treating a precursor obtained in the mixing at 350 to 500° C.

Abstract: Provided is a method for producing a sulfide solid electrolyte having excellent productivity and having a particularly small particle size, including mixing a raw material inclusion containing a lithium atom, a sulfur atom, a phosphorus atom, and a halogen atom to obtain an electrolyte precursor, and heating the electrolyte precursor in the presence of a solvent and a dispersant having 8 or more carbon atoms in a molecule thereof in a sealed pressure resistant vessel.

Abstract: Provided are a method for producing an atomization sulfide solid electrolyte, including atomizing a raw material sulfide solid electrolyte together with a specific ketone compound, the raw material sulfide solid electrolyte containing a lithium atom, a sulfur atom, a phosphorus atom and a halogen atom; an atomization sulfide solid electrolyte; an electrode mixture containing the atomization sulfide solid electrolyte and an electrode active material; and a lithium ion battery containing at least one of the atomization sulfide solid electrolyte and the electrode mixture.

Abstract: A method of production of a solid electrolyte, which comprises: a step of obtaining a mixture comprising a sulfide solid electrolyte and a tertiary alcohol including 9 or less carbon atoms, and a step of removing the tertiary alcohol from the mixture.

Abstract: A method of production of a solid electrolyte having an Argyrodite-type crystal structure, including steps of mixing raw materials such that lithium (Li), phosphorus (P), sulfur (S), oxygen (O), and halogen (X) satisfy the following formulas (11) to (14) to obtain a mixture; and heating the mixture: 4.8?Li/P?5.3??(11) 3.8?S/P?4.4??(12) 0<O/P?0.8??(13) 1.0<X/P?2.0??(14) wherein the formula (11) represents a molar ratio of Li to P, the formula (12) represents a molar ratio of S to P, the formula (13) represents a molar ratio of O to P, and the formula (14) represents a molar ratio of halogen (X) to P.

Abstract: The present invention relates to a method for producing a crystalline solid electrolyte having a small particle diameter and also having a high ionic conductivity and containing a lithium element, a sulfur element, a phosphorus element and a halogen element, the method including a complexing step of mixing a solid electrolyte raw material and a complexing agent in a liquid phase, wherein the method includes a mixing step of obtaining a precursor containing a lithium element, a sulfur element, and a phosphorus element; and a crystallization step of heating the precursor in a solvent using a pressure-resistant container or while refluxing.

Abstract: A method for producing a solid electrolyte having an argyrodite-type crystal structure, the method comprising: heat-treating a raw material mixture comprising lithium, sulfur, phosphorus and halogen in a solvent using a pressure-resistant container or under refluxing; removing the solvent; and firing a treated product obtained by the heat treatment.

Abstract: A method for producing a solid electrolyte, which comprises: a step of mixing an anionic surfactant which is a monomer or an oligomer, a solvent, and a sulfide solid electrolyte to obtain a mixture; and a step of removing the solvent from the mixture.

Abstract: A method for producing a solid electrolyte having an argyrodite-type crystal structure, the method comprising: heat-treating a raw material mixture comprising lithium, sulfur, phosphorus and halogen in a solvent using a pressure-resistant container or under refluxing; removing the solvent; and firing a treated product obtained by the heat treatment.

Abstract: A sulfide solid electrolyte particles comprising lithium, phosphorus and sulfur, having a volume-based average particle size measured by laser diffraction particle size distribution measurement of 0.1 ?m to 10 ?m, having a diffraction peak having 2? of 29.0 to 31.0 deg in powder X-ray diffraction measurement using CuK? ray, and an intensity ratio (Ib/Ip) of a peak intensity Ib at a high angle-side low part of the diffraction peak to a peak intensity Ip of the diffraction peak is less than 0.09.

Abstract: A method of production of a solid electrolyte, which comprises: a step of obtaining a mixture comprising a sulfide solid electrolyte and a tertiary alcohol including 9 or less carbon atoms, and a step of removing the tertiary alcohol from the mixture.

Abstract: A method for producing a sulfide solid electrolyte having an argyrodite-type crystal structure may involve: mixing a raw material containing elemental phosphorus at an integrated power of 0.5 kWh/kg or more, and heat-treating a precursor obtained in the mixing at 350 to 500° C.

Abstract: A method for producing a solid electrolyte having an argyrodite-type crystal structure, the method comprising: heat-treating a raw material mixture comprising lithium, sulfur, phosphorus and halogen in a solvent using a pressure-resistant container or under refluxing; removing the solvent; and firing a treated product obtained by the heat treatment.

Abstract: A sulfide solid electrolyte particles comprising lithium, phosphorus and sulfur, having a volume-based average particle size measured by laser diffraction particle size distribution measurement of 0.1 ?m or more and 10 ?m or less, having a diffraction peak having 2? ranging from 29.0 to 31.0 deg in powder X-ray diffraction measurement using CuK? ray, and an intensity ratio (Ib/Ip) of a peak intensity Ip of the diffraction peak to a diffraction intensity Ib at a high angle-side low part of the diffraction peak is less than 0.09.