Abstract: The present disclosure provides a negative electrode material that can improve the charge-discharge efficiency of a battery. A negative electrode material includes a reduced form of a first solid electrolyte material and a conductive auxiliary. The first solid electrolyte material is denoted by Formula (1): Li60M?X?. Herein, in Formula (1), each of ?, ?, and ? is a value greater than 0, M represents at least one element selected from the group consisting of metal elements except Li and semimetals, and X represents at least one element selected from the group consisting of F, Cl, Br, and I.

Abstract: The present disclosure provides a negative electrode material that can improve the cycle characteristics of a battery. The negative electrode material according to the present disclosure contains a reduced form of a solid electrolyte material. The solid electrolyte material is denoted by Formula (1): Li?M?X?. Herein, in Formula (1), each of ?, ?, and ? is a value greater than 0, M represents at least one element selected from the group consisting of metal dements except Li and semimetals, and X represents at least one dement selected from the group consisting of F, Cl, Br, and I.

Abstract: A battery includes a power-generating element and an insulating layer. The power-generating element includes an electrode layer, a counter-electrode layer placed to face the electrode layer, and a solid electrolyte layer located between the electrode layer and the counter-electrode layer. The insulating layer includes a first insulating film that extends inward from ends of the power-generating element in a planar view of a principal surface of the power-generating element and a second insulating film that covers a side surface of the power-generating element and that is continuous with ends of the first insulating film. The second insulating film is thinner than the first insulating film.

Abstract: An outer casing includes a housing configured to house a battery, a gas adsorbing unit disposed outside the housing and including an adsorbent that can adsorb a first gas generated inside the housing, and a first valve configured to discharge the first gas from the gas adsorbing unit to outside of the outer casing. The first valve may be connected to the gas adsorbing unit. A battery module includes the outer casing and a battery disposed in the housing of the outer casing.

Abstract: An electrode includes an active material layer that includes an active material, a solid electrolyte, and a binder and a current collector that includes a substrate and a coating layer coating the substrate and being in contact with the active material layer. The binder includes a block copolymer that includes two first blocks constituted of a repeating unit having an aromatic ring and a second block located between the two first blocks. The weight average molecular weight of the block copolymer is 170,000 or more. The coating layer includes conductive carbon.

Abstract: A battery includes a power generation element including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer located between and in contact with both the positive electrode layer and the negative electrode layer, an outer body accommodating the power generation element, and an adhesive body located between and in contact with both a main surface of the power generation element and the outer body.

Abstract: A solid electrolyte composition includes a solvent and a solid electrolyte dispersed in the solvent. The solid electrolyte includes a halide solid electrolyte. The solvent has a polar component ?p of Hansen solubility parameters that is greater than 0 and less than 5.9. The halide solid electrolyte contains Li, M1, and X1. M1 is at least one selected from the group consisting of metalloid elements and metal elements other than Li. X1 is at least one selected from the group consisting of F, Cl, Br, and I.

Abstract: A battery of the present disclosure includes a positive electrode, a negative electrode including graphite and zinc, and a solid electrolyte layer positioned between the positive electrode and the negative electrode. A ratio of a mass of zinc to a sum of a mass of graphite and the mass of zinc in the negative electrode is 10 mass % or more and 60 mass % or less. The above ratio may be 20 mass % or more and 40 mass % or less.

Abstract: A battery includes: a power generating element including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer between the positive electrode layer and the negative electrode layer; a structure located above a first main surface of the power generating element and having insulating properties; and a laminate film accommodating the power generating element and the structure, wherein a gap is located between the first main surface and the laminate film such that the gap is in contact with the structure.

Abstract: A battery includes a power generating element including a positive electrode layer, a negative electrode layer, and an electrolyte layer, an inner terminal electrode electrically connected to the power generating element, and a laminate film accommodating the power generating element and the inner terminal electrode. The laminate film includes a metal layer, an inner resin layer located closer to the power generating element than the metal layer, and an outer resin layer on an opposite side of the metal layer from the inner resin layer. The inner resin layer has an inner opening through which the metal layer is exposed. The inner terminal electrode is electrically connected to the metal layer through the inner opening. The inner terminal electrode and the metal layer each have an uneven surface over a contact area between the inner terminal electrode and the metal layer. The uneven surfaces engage with each other.

Abstract: A battery of the present disclosure includes: a positive electrode; a negative electrode; and an electrolyte layer disposed between the positive electrode and the negative electrode, wherein the negative electrode includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer includes a plurality of silicon layers and a plurality of lithium silicate layers, and the silicon layer and the lithium silicate layer are alternately stacked.

Abstract: A battery includes a power-generating element having at least one unit cell including an electrode layer, a counter-electrode layer, and an electrolyte layer located between the electrode layer and the counter-electrode layer and an insulating member covering the power-generating element. The insulating member includes a first member that includes a first principal surface covering portion covering a first principal surface of the power-generating element and a second member, joined to the first member, that includes a second principal surface covering portion covering a second principal surface of the power-generating element opposite to the first principal surface. A junction between the first member and the second member overlaps a side surface of the power-generating element when seen from a direction perpendicular to the side surface. An elastic modulus of the first member is higher than an elastic modulus of the second member.

Abstract: A positive-electrode material according to the present disclosure includes a positive-electrode active material and a coating layer covering the positive-electrode active material, wherein the coating layer contains oxygen and lithium, the positive-electrode active material and the coating layer constitute a coated active material, and the ratio Li/O of the lithium content to the oxygen content in a surface layer portion of the coated active material is 0.26 or less based on the atomic ratio.

Abstract: A positive-electrode material according to the present disclosure includes a positive-electrode active material and a coating layer covering the positive-electrode active material, wherein the coating layer contains lithium and carbon, the positive-electrode active material and the coating layer constitute a coated active material, and the ratio C/Li of the carbon content to the lithium content in a surface layer portion of the coated active material is 3.27 or more based on the atomic ratio.

Abstract: A positive-electrode material according to the present disclosure includes a positive-electrode active material and a coating layer covering the positive-electrode active material, wherein the coating layer contains niobium and carbon, the positive-electrode active material and the coating layer constitute a coated active material, and the ratio Nb/C of the niobium content to the carbon content in a surface layer portion of the coated active material is 0.11 or more based on the atomic ratio.

Abstract: A positive electrode material of the present disclosure includes: a material represented by the following composition formula (1); and a carbon material capable of occluding at least one selected from the group consisting of a simple substance of halogen and a halide, LiaMbXc . . . Formula (1) where a, b, and c are each a value greater than 0, M includes at least one selected from the group consisting of metal elements other than Li and metalloid elements, and X includes a halogen element.

Abstract: A solid electrolyte material is composed of Li, M, and X, where M is at least one kind of element selected from the group consisting of metalloid elements and metallic elements other than Li, and X is at least one kind of element selected from the group consisting of F, Cl, Br and I. In the solid electrolyte material, the mathematical formula FWHM/2?p?0.015 is satisfied, where FWHM represents a half bandwidth of an X-ray diffraction peak having the highest intensity within a range of a diffraction angle 2? of not less than 25 degrees and not more than 35 degrees in an X-ray diffraction pattern provided by an X-ray diffraction measurement of the solid electrolyte material; the X-ray diffraction measurement using a Cu-K? ray; and 2?p represents a diffraction angle of a center of the X-ray diffraction peak.

Abstract: [Object] The present invention provides a sulfonated fine cellulose fiber having excellent viscosity and the like, as well as a sulfonated fine cellulose fiber production method capable of efficiently producing the sulfonated fine cellulose fibers. [Method for Achieving the Object] A fine cellulose fiber obtained by fibrillating a cellulose fiber wherein a part of the hydroxyl groups of the fine cellulose fiber is substituted with sulfo groups, and an introduction amount of sulfur attributable to the sulfo groups is higher than 0.42 mmol/g. The fine cellulose fiber comprises a plurality of unit fibers and has an average fiber width of 30 nm or less. A dispersion liquid in which the fine cellulose fiber is dispersed in a water-soluble solvent at a solid concentration of 0.5% by mass has a viscosity of 5,000 mPa·s or more at 25° C. This makes it possible to obtain the desired viscosity when the fine cellulose fibers are dispersed in a dispersion liquid.

Abstract: A battery including a first and second electrode layer, and an electrolyte layer including a first solid electrolyte material. The battery satisfies (A), (B), (C), or (D). (A) The current collector layer has, in at least a partial region thereof, a copper content of less than 50 mass %. (B) At least one selected from the group of the current collector layer and an electrode lead has, in at least a partial region thereof, a copper content of less than 50 mass %. (C) At least one selected from the group of the current collector layer and an exterior body has, in at least a partial region thereof, a copper content of less than 50 mass %. (D) at least one selected from the group of the current collector layer, the electrode lead, and the exterior body has, in at least a partial region thereof, a copper content of less than 50 mass %.

Abstract: A solid electrolyte composition of the present disclosure includes: a solid electrolyte material including an oxygen element and a halogen element; and an organic solvent. The organic solvent includes at least one selected from the group consisting of a halogen-group-containing compound and a hydrocarbon. The solid electrolyte material includes at least one selected from the group consisting of Zn, Sn, Al, Sc, Ga, Bi, Sb, Zr, Hf, Ti, Ta, Nb, W, Y, Gd, Tb, and Sm.