Abstract: A method is provided for preparing an all-solid battery that at least includes a negative electrode layer containing a negative electrode active material and a sulfide solid electrolyte, and a negative electrode current collector containing a metal that is in contact with the negative electrode layer and can react with the sulfide solid electrolyte, in which a sulfur compound generated by a reaction of the metal contained in the negative electrode current collector and the sulfide solid electrolyte contained in the negative electrode layer is not present in a contact portion of the negative electrode layer and the negative electrode current collector.

Abstract: A solid-state battery comprising a stack including at least one unit cell including a positive electrode layer including a positive electrode active material, a negative electrode layer including a negative electrode active material, and a solid electrolyte layer laminated between the positive and negative electrode layers, and an outer covering accommodating the stack, wherein the solid-state battery further including a pressure receiving member provided on at least a part of a periphery of the outer covering, and wherein the pressure receiving member has a thickness of less than a total thickness of the stack and the outer covering in a stacking direction of the unit cell.

Abstract: A manufacturing method of an all-solid battery includes fabricating a single battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer arranged between the positive electrode layer and the negative electrode layer; fabricating a plurality of battery packs including the plurality of single batteries; confining a plurality of battery packs by an equal confining pressure; measuring the electrical characteristics of the plurality of confined battery packs; determining the battery pack whose measured electrical characteristics are the worst of the plurality of battery packs; reducing the confining pressures of the other battery packs so that the electrical characteristics of the other battery packs are equal to that of the battery pack whose electrical characteristics have been determined to be the worst; and electrically connecting in parallel the battery packs.

Abstract: A positive electrode active material layer that can reduce the internal resistance of an all-solid-state lithium ion battery. A positive electrode active material layer that contains a positive electrode active material, a solid electrolyte and a conductive aid. In addition, in the positive electrode active material layer, the total content of the solid electrolyte and the conductive aid in the positive electrode active material layer is 10 vol % to 40 vol % with respect to the total volume of the positive electrode active material layer, and the electron conductivity/lithium ion conductivity ratio is 2 to 500. The invention further provides an all-solid-state lithium ion battery comprising the positive electrode active material layer.

Abstract: An objective of the present invention is to provide a charging system, capable of increasing the rapid charging capacity of an on-vehicle all-solid-state battery, and reducing the effect of confining pressure on the all-solid-state battery. This is achieved by a charging system for an all-solid-state battery to be mounted in a vehicle, the charging system comprising: a charging section that charges an all-solid-state battery, a pressing section that applies confining pressure to the all-solid-state battery, and a pressure control section that controls the confining pressure, wherein the pressure control section directs the pressing section so that the confining pressure during charging is higher than the confining pressure during discharging.

Abstract: An all-solid battery that at least includes a negative electrode layer containing a negative electrode active material and a sulfide solid electrolyte, and a negative electrode current collector containing a metal that is in contact with the negative electrode layer and can react with the sulfide solid electrolyte, in which a sulfur compound generated by a reaction of the metal contained in the negative electrode current collector and the sulfide solid electrolyte contained in the negative electrode layer is not present in a contact portion of the negative electrode layer and the negative electrode current collector.

Abstract: A solid-state battery comprising a stack including at least one unit cell including a positive electrode layer including a positive electrode active material, a negative electrode layer including a negative electrode active material, and a solid electrolyte layer laminated between the positive and negative electrode layers, and an outer covering accommodating the stack, wherein the solid-state battery further including a pressure receiving member provided on at least a part of a periphery of the outer covering, and wherein the pressure receiving member has a thickness of less than a total thickness of the stack and the outer covering in a stacking direction of the unit cell.

Abstract: A manufacturing method of an all-solid battery includes fabricating a single battery including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer arranged between the positive electrode layer and the negative electrode layer; fabricating a plurality of battery packs including the plurality of single batteries; confining a plurality of battery packs by an equal confining pressure; measuring the electrical characteristics of the plurality of confined battery packs; determining the battery pack whose measured electrical characteristics are the worst of the plurality of battery packs; reducing the confining pressures of the other battery packs so that the electrical characteristics of the other battery packs are equal to that of the battery pack whose electrical characteristics have been determined to be the worst; and electrically connecting in parallel the battery packs.

Abstract: An objective of the present invention is to provide a charging system, capable of increasing the rapid charging capacity of an on-vehicle all-solid-state battery, and reducing the effect of confining pressure on the all-solid-state battery. This is achieved by a charging system for an all-solid-state battery to be mounted in a vehicle, the charging system comprising: a charging section that charges an all-solid-state battery, a pressing section that applies confining pressure to the all-solid-state battery, and a pressure control section that controls the confining pressure, wherein the pressure control section directs the pressing section so that the confining pressure during charging is higher than the confining pressure during discharging.

Abstract: A battery module which has a structure that can apply an approximately uniform pressure to electrodes contained in the battery module. A battery module including two or more unit cells and a hermetically closed housing for housing the two or more unit cells and a fluid, each unit cell including one or more stack units and a cell case for housing the one or more stack units, each stack unit including at least a positive electrode, an electrolyte layer and a negative electrode stacked together, wherein the two or more unit cells are stacked in a direction that is substantially the same as a stacking direction of the one or more stack units, and wherein a gap member is present between the stacked unit cells, the gap member being configured to allow the fluid to flow into the gap member.

Abstract: In a process of manufacturing a membrane electrode assembly, seal-material flow holes (62a, 62b) in the form of through-holes are formed, separately from manifold holes (16a-16f), in the membrane electrode assembly prior to injection molding. When the membrane electrode assembly is placed in a mold for injection molding, the seal-material flow hole (62a) is located in a cavity (44a). When a seal material is supplied from a supply port (42) formed at a location where the manifold hole (16a) is formed, the seal material that flows toward the upper die (40a) passes the seal-material flow hole (62a) in the cavity (44a), and then flows toward the lower die (40b), so as to reduce the unevenness between the amounts of supply of the seal material to the upper die (40a) and the lower die (40b).

Abstract: A fuel cell separator is provided with a separator substrate made of metal which has at least one open portion through which a fluid can pass provided in a predetermined position, and a film coating member that coats a predetermined area including the open portion of the separator substrate. A portion of the film coating member that corresponds to at least a peripheral edge portion of the open portion is adhesion treated.

Abstract: A porous body (28, 29) for a fuel cell (1000), a fuel cell component including the porous body and a method of manufacturing the fuel cell component is provided. The porosity in at least a portion (15) in the vicinity of the periphery of the porous body (28, 29) is lower than the porosity in an interior portion of the porous body. When a seal member (30) is arranged on the periphery of the porous body (28, 29) to be integrated with the porous body, the interior portion of the porous body (28, 29), is prevented from being impregnated with the seal member.

Abstract: In a process of manufacturing a membrane electrode assembly, seal-material flow holes (62a, 62b) in the form of through-holes are formed, separately from manifold holes (16a-16f), in the membrane electrode assembly prior to injection molding. When the membrane electrode assembly is placed in a mold for injection molding, the seal-material flow hole (62a) is located in a cavity (44a). When a seal material is supplied from a supply port (42) formed at a location where the manifold hole (16a) is formed, the seal material that flows toward the upper die (40a) passes the seal-material flow hole (62a) in the cavity (44a), and then flows toward the lower die (40b), so as to reduce the unevenness between the amounts of supply of the seal material to the upper die (40a) and the lower die (40b).

Abstract: A fuel cell separator is provided with a separator substrate made of metal which has at least one open portion through which a fluid can pass provided in a predetermined position, and a film coating member that coats a predetermined area including the open portion of the separator substrate. A portion of the film coating member that corresponds to at least a peripheral edge portion of the open portion is adhesion treated.