Abstract: All-solid-state battery 100 has a structure in which positive electrode current collector 6, positive electrode layer 20 containing positive electrode active material 3 and solid electrolyte 1, solid electrolyte layer 10 containing solid electrolyte 2, negative electrode layer 30 containing negative electrode active material 4 and solid electrolyte 5, and negative electrode current collector 7 are stacked in this order. Solid electrolyte 2 contains first material 21 and second material 22 having an ionic conductivity lower than an ionic conductivity of first material 21. First material 21 includes first particles 40, and at least a part of a surface of first particles 40 is covered with second material 22.

Abstract: Positive electrode active material 2 is used for positive electrode layer 20 of all-solid-state battery 100, and contains plural secondary particles 2b in each of which plural primary particles 1a are aggregated. Plural of secondary particles 2b contain impregnation particles, the impregnation particles each being a secondary particle having a region impregnated with solid electrolyte 1 in a gap between plural primary particles 1a. The region impregnated with solid electrolyte 1 is a region in which solid electrolyte 1 is impregnated in a distance of 1 ?m or more from an outer periphery of the impregnation particle toward an inside of the impregnation particle.

Abstract: All-solid-state battery 100 has a structure in which positive electrode current collector 7, positive electrode layer 20 containing positive electrode active material 3, solid electrolyte 1 including a plurality of first particles having a first average particle diameter, and solid electrolyte 2 composed of a plurality of second particles having second average particle diameter larger than the first average particle diameter, solid electrolyte layer 10 containing solid electrolyte 6, negative electrode layer 30 containing negative electrode active material 4 and solid electrolyte 5, and negative electrode current collector 8 are stacked in this order, in which at least a part of solid electrolyte 1 serves as a cover layer 11 covering at least a part of a surface of positive electrode active material 3, and at least one of the plurality of second particles are partially embedded in cover layer 11.

Abstract: An all-solid battery includes a positive-electrode layer having a positive-electrode current collector and a positive-electrode mixture layer, a negative-electrode layer having a negative-electrode current collector and a negative-electrode mixture layer, and a solid electrolyte layer. The positive-electrode mixture layer contains a positive-electrode active material and a solid electrolyte. The solid electrolyte layer is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer. In the positive-electrode mixture layer, the active material volume proportion is larger and the porosity is smaller in a portion closer to the positive-electrode current collector than in a portion far from the positive-electrode current collector.

Abstract: An electrode includes a collector, and an active material mixture layer located on the collector and containing first particles, second particles, first active material particles, and second active material particles. The active material mixture layer includes a first mixture layer located on the collector and containing the first particles and the first active material particles, and a second mixture layer located on the first mixture layer and containing the second particles and the second active material particles. The active material mixture layer has a boundary in which the first active material particles and the second active material particles are in contact with each other in a discontinuous state at least in part, in a cross-sectional view of the electrode.

Abstract: A powder layer composite includes a base and a powder layer having a thickness of 100 ?m or less and disposed on the base. An average of a total value of a number of powder aggregates having a long diameter of 500 ?m or greater and a number of pinholes having a long diameter of 500 ?m or greater, in any of a plurality of different regions of 20 mm×20 mm on a surface of the powder layer, is 0.2 pieces/cm2 or less.

Abstract: A powder applying apparatus includes a transport device, a powder supplier, and a squeegee. The transport device moves a sheet in a predetermined direction. The powder supplier supplies powder on a surface of the sheet. The squeegee has a distance from the sheet, and the powder supplier adjusts the thickness of powder supplied onto the surface of the sheet. The squeegee vibrates at a frequency of 2 kHz or more and 300 kHz or less.

Abstract: A solid-state battery that exhibits improved battery performance includes: a positive-electrode collector; a negative-electrode collector; a positive electrode layer formed on the positive-electrode collector and containing a positive-electrode active material and a solid electrolyte; a negative electrode layer formed on the negative-electrode collector and containing a negative-electrode active material and a solid electrolyte; and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer and containing a solid electrolyte. At least one of the solid electrolyte and the solid electrolyte partly represents a porous solid electrolyte.

Abstract: A negative electrode active substance is used for a negative electrode layer of an all-solid battery and contains a plurality of secondary particles. The plurality of secondary particles contain impregnated particles which are secondary particles having a polymer solid electrolyte region impregnated with the polymer solid electrolyte therein and an active material region.

Abstract: An all-solid battery includes a positive-electrode layer having a positive-electrode current collector and a positive-electrode mixture layer, a negative-electrode layer having a negative-electrode current collector and a negative-electrode mixture layer, and a solid electrolyte layer. The positive-electrode mixture layer contains a positive-electrode active material and a solid electrolyte. The solid electrolyte layer is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer. In the positive-electrode mixture layer, the active material volume proportion is larger and the porosity is smaller in a portion closer to the positive-electrode current collector than in a portion far from the positive-electrode current collector.

Abstract: An all-solid battery includes a positive-electrode layer, a negative-electrode layer, and a solid electrolyte layer. The positive-electrode layer includes a positive-electrode current collector, a positive-electrode bonding layer that contains at least a conductive agent comprising non-metal and is formed on the positive-electrode current collector, and a positive-electrode mixture layer that contains at least a positive-electrode active material and a solid electrolyte and is formed on the positive-electrode bonding layer. The negative-electrode layer includes a negative-electrode current collector and a negative-electrode mixture layer that contains at least a negative-electrode active material and the solid electrolyte. The solid electrolyte layer is disposed between the positive-electrode mixture layer and the negative-electrode mixture layer and contains the solid electrolyte.

Abstract: An all-solid battery is formed by laminating a first current collector, a positive-electrode layer, a solid electrolyte layer, a negative-electrode layer, and a second current collector in this order. The positive-electrode fine particle layer contains positive-electrode active material fine particles having a particle diameter smaller than that of the positive-electrode active material and is formed on a side surface of the positive-electrode layer. The negative-electrode fine particle layer contains negative-electrode active material fine particles having a particle diameter smaller than that of the negative-electrode active material and is formed on a side surface of the negative-electrode layer.

Abstract: An all-solid-state battery includes: a positive electrode layer including a positive electrode current collector and a positive electrode mixture layer; a negative electrode layer including a negative electrode current collector and a negative electrode mixture layer; and a solid electrolyte layer. The solid electrolyte layer is disposed between the positive electrode mixture layer and the negative electrode mixture layer. A weight per unit area of a first portion of the negative electrode mixture layer overlapping the positive electrode mixture layer on a stacking axis is greater than a weight per unit area of a second portion of the negative electrode mixture layer not overlapping the positive electrode mixture layer on the stacking axis.

Abstract: An all-solid-state battery includes: a positive electrode layer including a positive electrode current collector and a positive electrode mixture layer; a negative electrode layer including a negative electrode current collector and a negative electrode mixture layer; and a solid electrolyte layer. The solid electrolyte layer is disposed between the positive electrode mixture layer and the negative electrode mixture layer. On a plane perpendicular to a stacking axis, an area of the negative electrode mixture layer is larger than an area of the positive electrode mixture layer. On the stacking axis, an entire portion of the positive electrode mixture layer overlaps a portion of the negative electrode mixture layer.

Abstract: A positive electrode active material layer is formed on at least one surface of a positive electrode current collector having a substantially rectangular planar shape. The positive electrode current collector includes an exposed portion in a partial region in a longitudinal direction and at an end portion of the partial region in a width direction, and a positive electrode lead is to be connected to the exposed portion. In a region in which the positive electrode active material layer is formed, an elastic modulus of a first region adjacent to the exposed portion in the width direction is larger than elastic moduli of second regions adjacent to the exposed portion and the first region in the longitudinal direction.

Abstract: A positive electrode active material layer is formed on at least one surface of a positive electrode current collector having a substantially rectangular planar shape. The positive electrode current collector includes an exposed portion in a partial region in a longitudinal direction and at an end portion of the partial region in a width direction, and a positive electrode lead is to be connected to the exposed portion. In a region in which the positive electrode active material layer is formed, an elastic modulus of a first region adjacent to the exposed portion in the width direction is larger than elastic moduli of second regions adjacent to the exposed portion and the first region in the longitudinal direction.

Abstract: A coating bar 1 in a coating apparatus includes grooves 2 that are formed, on the surface of a cylindrical shaft, from a contact point between the coating bar 1 and a substrate 3 in a traveling direction and a direction opposite to the traveling direction, and are arranged in the width direction of the shaft. Thus, a uniform film can be stably applied to the curved or wavy substrate 3 having high rigidity.

Abstract: In a coating apparatus and a method thereof according to the present invention, the coating-solution receiving region of a porous material 2 is smaller in bubble diameter than the contact region of a porous material 3 with a substrate 7. Thus, even if the substrate 7 is curved or wavy, a coating film 8 can be easily and evenly applied to the substrate 7.

Abstract: A die head is disclosed comprises: a feed slot which is positioned downstream of the moving direction of the substrate and continuously feed the coating solution; a gas suction slot which is positioned upstream of the moving direction of the substrate and suctions a gas so as to create vacuum in the vicinity of the upstream edge of the bead with respect to the moving direction of the substrate; and a gas ejection slot which is positioned between the feed slot and gas suction slot and ejects a gas so as to prevent inflow of the coating solution into the gas suction slot.

Abstract: A die head is disclosed comprises: a feed slot which is positioned downstream of the moving direction of the substrate and continuously feed the coating solution; a gas suction slot which is positioned upstream of the moving direction of the substrate and suctions a gas so as to create vacuum in the vicinity of the upstream edge of the bead with respect to the moving direction of the substrate; and a gas ejection slot which is positioned between the feed slot and gas suction slot and ejects a gas so as to prevent inflow of the coating solution into the gas suction slot.