A method of manufacturing an inorganic material includes: a step (A) of preparing a first inorganic material as a raw material; and a step (B) of obtaining a second inorganic material by crushing the first inorganic material using a ball mill to obtain fine particles of the first inorganic material, the ball mill including a cylindrical container and crushing balls, in which the step (B) includes a step (B1) of putting the first inorganic material and the crushing balls into the cylindrical container and subsequently rotating the cylindrical container about a cylindrical shaft and a step (B2) of moving the cylindrical container such that the first inorganic material moves in the cylindrical shaft direction.

A solid-state battery of the present disclosure includes: a negative electrode layer including a negative electrode active material; a positive electrode layer; a solid electrolyte layer positioned between the positive electrode layer and the negative electrode layer. The negative electrode active material includes: a graphite particle being an aggregate of a plurality of primary particles including graphite, the graphite particle having a void inside; and a solid electrolyte being present in the void. At least a portion of the void may be filled with the solid electrolyte. The void has a minimum diameter of, for example, 1 nm or more and 70 nm or less.

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.

The present invention relates to a solid electrolyte, its precursor, methods for producing the same as well as its use, e.g. in electrochemical cells and capacitors, fuel cells, batteries and sensors.

The present invention relates to a solid electrolyte, its precursor, methods for producing the same as well as its use, e.g. in electrochemical cells and capacitors, fuel cells, batteries and sensors.

A method of producing an inorganic material (S10) according to the present invention includes a vitrification step (S12) of applying shearing stress and compressive stress to a mixed powder (MP) of a plurality of kinds of inorganic compound powders by using a ring ball mill mechanism (70) to vitrify at least a part of the mixed powder (MP); and a dispersion step (S13) of dispersing the vitrified mixed powder (MP) after the vitrification step (S12), where a combined step of the vitrification step (S12) and the dispersion step (S13) is performed a plurality of times to obtain a vitrified inorganic material powder from the mixed powder.

The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1:
Li.sub.aPS.sub.bN.sub.cX.sub.d  [Formula 1] wherein 6≤a≤7, 3<b<6, 0<c≤1, 0<d≤2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

The present invention relates to a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries. The a nitrogen-doped sulfide-based solid electrolyte for all-solid batteries includes a compound with an argyrodite-type crystal structure represented by the following Formula 1:
Li.sub.aPS.sub.bN.sub.cX.sub.d  [Formula 1] wherein 6≤a≤7, 3<b<6, 0<c≤1, 0<d≤2, and each X is the same or different halogen atom selected from the group consisting of chlorine (Cl), bromine (Br), and iodine (I).

Provided is a sulfide-based solid electrolyte comprising lithium, phosphorus, sulfur, and a halogen, as a novel solid electrolyte capable of suppressing generation of hydrogen sulfide and securing ionic conductivity. The solid electrolyte is characterized by comprising Li.sub.7−aPS.sub.6−aHa.sub.a (wherein Ha represents a halogen, and “a” satisfies 0.2<a≤1.8) having an argyrodite-type crystal structure, and Li.sub.3PS.sub.4, wherein, in an X-ray diffraction (XRD) pattern obtained through measurement by an X-ray diffraction method, the ratio of the peak intensity of a peak appearing at a position in a range of diffraction angle 2θ=26.0° to 28.8° derived from Li.sub.3PS.sub.4, relative to the peak intensity of a peak appearing at a position in a range of diffraction angle 2θ=24.9° to 26.3° derived from the argyrodite-type crystal structure, is 0.04 to 0.3.

Provided is a battery in which the internal resistance is further decreased. The present disclosure provides a battery, comprising a positive electrode, a negative electrode, and an electrolyte layer provided between the positive electrode and the negative electrode. The electrolyte layer includes a first solid electrolyte material. The first solid electrolyte material includes Li, M, and X, and does not include sulfur. M is at least one selected from the group consisting of metalloid elements and metal elements other than Li. X is at least one selected from the group consisting of Cl, Br, and I. The negative electrode includes a negative electrode active material and a sulfide solid electrolyte.