Abstract: An object of the present invention is to provide a sulfide solid electrolyte material having satisfactory ion conductivity. In the present invention, the above object is solved by providing a sulfide solid electrolyte material comprising a Li element, a Si element, a P element, a S element, and an X element (in which X represents at least one of F, Cl, Br and I), the sulfide solid electrolyte material having a crystal phase A having a peak at the position of 2?=29.58°±1.00° measured by X-ray diffractometry using CuK? ray.

Abstract: An object of the present invention is to provide a sulfide solid electrolyte material having satisfactory ion conductivity. In the present invention, the above object is solved by providing a sulfide solid electrolyte material comprising a Li element, a Si element, a P element, a S element, and an X element (in which X represents at least one of F, Cl, Br and I), the sulfide solid electrolyte material having a crystal phase B having a peak at the position of 2?=30.12°±1.00° measured by X-ray diffractometry using CuK? ray.

Abstract: An object of the present invention is to provide a sulfide solid electrolyte glass with high Li ion conductivity. The present invention achieves the above-mentioned object by providing a sulfide solid electrolyte glass comprising Li4P2S6, characterized by having a glass transition point.

Abstract: A sulfide solid electrolyte material contains glass ceramics that contains Li, A, X, and S, and has peaks at 2?=20.2° and 23.6° in X-ray diffraction measurement with CuK? line. A is at least one kind of P, Si, Ge, Al, and B, and X is a halogen. A method for producing a sulfide solid electrolyte material includes amorphizing a raw material composition containing Li2S, a sulfide of A, and LiX to synthesize sulfide glass, and heating the sulfide glass at a heat treatment temperature equal to or more than a crystallization temperature thereof to synthesize glass ceramics having peaks at 2?=20.2° and 23.6° in X-ray diffraction measurement with CuK? line, in which a ratio of the LiX contained in the raw material composition and the heat treatment temperature are controlled to obtain the glass ceramics.

Abstract: A method of producing an active material powder includes (i) an attachment step of obtaining a powder including an active material particle, which stores and releases lithium ions at a potential of 4.5 V or higher based on Li, and a coating layer precursor, which is attached to a surface of the active material particle, by attaching an alkoxide solution containing lithium ions and niobium ions to the surface of the active material particle and drying the attached alkoxide solution; and (ii) a heating step of forming a coating layer on the surface of the active material particle by heating the powder obtained in the attachment step to be within a temperature range of 120° C. to 200° C.

Abstract: The invention provides a method of producing a solid state lithium battery module in which the occurrence of short circuit caused by dendrites is suppressed. The invention solves this problem by providing a method of producing a solid state lithium battery module, including steps of: a pressing step of pressing a sulfide glass having an ion conductor containing a Li element, a P element, and a S element, and forming a solid electrolyte layer; and a restraining step of restraining a solid state lithium battery including the solid electrolyte layer, using restraining member, wherein, in the pressing step, the solid electrolyte layer is formed such that the average pore radius obtained by a mercury intrusion method is R (?m), and in the restraining step, the solid state lithium battery is restrained such that when the confining pressure is designated as P(MPa), the relationship: P??5900R+74 is satisfied.

Abstract: A lithium ion conducting material includes a sulfide-based solid electrolyte material that contains Li, an element that belongs to group 13 to group 15 and S, and that contains an MSx unit, wherein M is an element that belongs to group 13 to group 15, S is a sulfur element, and x is the maximum number of S atoms that can be bonded with M, and an inhibitor that is in contact with the sulfide-based solid electrolyte material and that contains a metal element having an ionization tendency lower than that of hydrogen.

Abstract: Disclosed is an all solid state battery that includes a cathode layer containing a cathode active material, an anode layer containing an anode active material, and a solid electrolyte layer formed between the cathode layer and the anode layer, wherein the anode layer contains the anode active material such that a carbon-based active material and a metal-based active material are mixed, the metal-based active material is a metal represented by a general formula M or a metal oxide represented by a general formula MxOy (M is a metal) for causing an alloying reaction with Li, a charge and discharge potential of the metal-based active material is nobler than that of the carbon-based active material, and a capacity ratio of the carbon-based active material in the anode layer is higher than that of the metal-based active material.

Abstract: A sulfide solid electrolyte material contains glass ceramics that contains Li, A, X, and S, and has peaks at 2?=20.2° and 23.6° in X-ray diffraction measurement with CuK? line. A is at least one kind of P, Si, Ge, Al, and B, and X is a halogen. A method for producing a sulfide solid electrolyte material includes amorphizing a raw material composition containing Li2S, a sulfide of A, and LiX to synthesize sulfide glass, and heating the sulfide glass at a heat treatment temperature equal to or more than a crystallization temperature thereof to synthesize glass ceramics having peaks at 2?=20.2° and 23.6° in X-ray diffraction measurement with CuK? line, in which a ratio of the LiX contained in the raw material composition and the heat treatment temperature are controlled to obtain the glass ceramics.

Abstract: A solid secondary battery system includes a solid secondary battery including a positive electrode active material layer, a negative electrode active material layer and a solid electrolyte layer formed between the positive electrode active material layer and the negative electrode active material layer; a heater for warming the solid secondary battery; an over-discharge process unit configured to perform over-discharge process of the solid secondary battery; and a control unit configured to warm the solid secondary battery by means of the heater and/or to make the over-discharge process unit perform the over-discharge process of the solid secondary battery after the warming.

Abstract: An object of the present invention is to provide a sulfide solid electrolyte glass with high Li ion conductivity. The present invention achieves the above-mentioned object by providing a sulfide solid electrolyte glass comprising Li4P2S6, characterized by having a glass transition point.

Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material which copes with both the restraint of the increase in interface resistance and the restraint of the increase in bulk resistance. The present invention solves the above-mentioned problems by providing a sulfide solid electrolyte material characterized by containing at least one of Cl and Br.

Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with high Li ion conductivity. The present invention solves the problem by providing a sulfide solid electrolyte material comprising an ion conductor with an ortho-composition, and LiI, characterized in that the sulfide solid electrolyte material is glass with a glass transition point.

Abstract: A method of producing a sulfide solid electrolyte material includes: forming an intermediate having crosslinking sulfur but no Li2S, by vitrifying, in a first vitrification process, a starting material composition obtained by mixing Li2S and a sulfide of a group 14 or group 15 element such that a proportion of Li2S with respect to the sum total of the Li2S and the sulfide of a group 14 or group 15 element is smaller than a proportion of Li2S required for the sulfide solid electrolyte material to obtain an ortho composition; and eliminating the crosslinking sulfur by vitrifying, in a second vitrification process, an intermediate-containing composition resulting from mixing a bond cleaving compound, which cleaves a bond of the crosslinking sulfur, with the intermediate.

Abstract: A lithium ion conducting material includes a sulfide-based solid electrolyte material that contains Li, an element that belongs to group 13 to group 15 and S, and that contains an MSx unit, wherein M is an element that belongs to group 13 to group 15, S is a sulfur element, and x is the maximum number of S atoms that can be bonded with M, and an inhibitor that is in contact with the sulfide-based solid electrolyte material and that contains a metal element having an ionization tendency lower than that of hydrogen.

Abstract: A sulfide solid electrolyte with excellent ion conductivity and a method for producing a crystallized glass contained in the sulfide solid electrolyte. A sulfide solid electrolyte comprising a crystallized glass represented by the following chemical formula yLi2S.(100-x-y)P2S5.xP2O5, wherein 0<x<25 and 67<y<80.