Abstract: As a method of manufacturing a metal-air battery, a first step is included of stacking an exterior body (e.g., first resin film 11), a water-repellent film (14), and a positive electrode (e.g., air electrode 15) in the stated order. The first step includes: a fusing step of fusing the exterior body and the water-repellent film (14); and a compression step of compressing the water-repellent film (14) and the positive electrode. The fusing step fuses the exterior body and the water-repellent film (14). After the first step, a portion of the exterior body is removed from inside the fusing portion (141) formed in the fusing step, to form an opening (e.g., air inlet 111) in the exterior body.

Abstract: A metal-air cell comprises a negative electrode, a negative electrode case housing the negative electrode, sealed while a lead of the negative electrode extends from the negative electrode case, including a separator that forms at least part of the negative electrode case, an air electrode facing the negative electrode across the separator, and a cell case housing the negative electrode case and the air electrode and sealed while the lead of the negative electrode expands from the cell case and a lead of the air electrode expands from the cell case.

Abstract: This metal-air battery module includes a metal-air battery cell, a plate member, and a pair of fixing members. The metal-air battery cell has a resin film provided with an opening, and a water-repellent film which is arranged and welded so as to cover the opening. The plate member is arranged facing the surface of the metal-air battery cell that is provided with the opening. The metal-air battery cell and the plate member are fixed by the pair of fixing members at a surface end in a surface direction, which is a direction along a surface in which both components face each other, the pair of fixing members being opposingly arranged so as to sandwich both components in the surface direction.

Abstract: A metal-air battery from which leakage of an electrolytic solution is reduced is provided. The metal-air battery includes: a positive electrode including: a current collector; and a catalyst layer formed on the current collector and capable of reducing oxygen; a negative electrode disposed to face the positive electrode; an exterior body housing a stacked portion including the positive electrode and the negative electrode, and having an opening formed to open to the positive electrode; an electrolyte disposed inside the exterior body; and a water-repellent film covering the opening, including a joint portion joined to the exterior body, and transparent to oxygen. The catalyst layer includes a portion positioned between the joint portion and the current collector.

Abstract: In a metal negative electrode, a current collector includes a through-hole or a recess provided to extend from a front surface of a planar plate toward a back surface of the planar plate. A distance from a midpoint of a joining boundary to a point on a surface of the current collector is designated as a region dividing distance, the point defining a distance less than a maximum distance between the midpoint and a side or a surface of the current collector. In the current collector, a first region is a region defined by distances from the midpoint, the distances being a distance equal to the region dividing distance and distances greater than the region dividing distance, and, in the current collector, a second region is a region defined by distances from the midpoint that are less than the region dividing distance.

Abstract: Provided is a laminate battery in which a short circuit between a negative electrode active material and a positive electrode due to expansion of the negative electrode active material during discharging is prevented. A laminate battery includes a battery case that serves as an outer case. The laminate battery includes an inner case within a battery case 11, and the inner case is formed of a positive electrode storage case and a separator. An inside of the inner case serves as a positive electrode storage portion that stores a positive electrode. An outside of the inner case serves as a negative electrode storage portion that stores a negative electrode. The negative electrode uses a particulate negative electrode active material (e.g., zinc or zinc oxide).

Abstract: In a battery casing a metal negative electrode that contains metal serving as a negative electrode active material and an air electrode are arranged so as to face each other in a state where at least a part of the metal negative electrode and the air electrode is immersed in an electrolytic solution inside a casing. The metal negative electrode is housed in a negative electrode housing in the casing. A separator separating the metal negative electrode and the air electrode is arranged at a side surface of the negative electrode housing. An opening through which inside of the negative electrode housing and outside of the negative electrode housing communicate with each other is provided on an upper surface of the negative electrode housing.

Abstract: Provided are a laminated battery capable of suppressing a level drop of an electrolyte caused by expansion of a negative electrode active material during discharge, and a manufacturing method for the laminated battery. An enclosure member of the laminated battery is constituted by affixing a first resin film and a second resin film to each other, and a separator is arranged inside the enclosure member between a positive electrode (for example, a first electrode) and a negative electrode (for example, a second electrode). A peripheral edge portion of the separator is fixed to a peripheral edge portion of the enclosure member (the first resin film or the second resin film).

Abstract: A metal-air battery includes a metal negative electrode, an air electrode, and a spacer interposed between the metal negative electrode and the air electrode 5. The spacer is composed of grip-shaped frameworks extended in a three-dimensional direction, and an electrolytic solution for filling a space between the frameworks.

Abstract: Provided is a metal-air cell whose electrolytic solution is kept from leaking from an outer pouch housing an electrode. Hence, the metal-air cell excels in reliability and safety. The metal-air cell includes a negative electrode and a positive electrode each including a lead. The lead includes a sealing member provided to an outer face of the lead. The outer pouch includes a fusing portion in which the sealing member and the lead are held and fused together. The fusing portion seals the outer pouch. The sealing member includes an adhesive layer covering the lead inside the outer pouch.

Abstract: An air electrode includes a current collector, a catalyst layer, and a water repellent membrane provided in this order. The catalyst layer has a first face in contact with either one of the current collector and the water repellent membrane, a second face in contact with either other of the current collector or the water repellent membrane, and a plurality of through holes, through which the first face and the second face communicate with each other. The through holes each have a constriction with an inner diameter smaller than either of an opening diameter in the first face and an opening diameter in the second face.

Abstract: A metal-air battery includes a metal negative electrode (12), an oxygen-generating electrode placed on a surface of the metal negative electrode, and an air electrode placed on another surface of the metal negative electrode. The metal negative electrode includes at least a negative electrode active material layer facing the oxygen-generating electrode. A first separator placed in contact with the negative electrode active material layer is placed between the negative electrode active material layer and the oxygen-generating electrode.

Abstract: A metal-air battery includes a metal electrode, a positive electrode, an electrolyte, and an outer housing for housing them. A spacer is disposed between the metal electrode and the positive electrode. The spacer has a frame-shaped portion constituting an outer periphery, and an opening portion penetrating in a thickness direction. The frame-shaped portion has a communication portion that communicates with an outer edge of the frame-shaped portion and the opening portion, so that the electrolyte can flow inside and outside the frame-shaped portion, and the electrolyte can be preserved in the opening portion.

Abstract: A metal-air battery 1 includes an air electrode and a negative electrode. The negative electrode includes a collector carrying an active material thereon. The collector is formed by bending a plate with through holes in a wavy way, and a bending height of the collector in a thickness direction of the negative electrode is larger than a thickness of the plate.

Abstract: A metal-air battery module includes a unit assembly having a plurality of battery units coupled using first couplers. Each battery unit has a metal-air battery cell held by a sheet. In the unit assembly, two of the metal-air battery cells adjacent to each other are arranged in such a manner that a negative-electrode terminal and an air-electrode terminal face each other, and the facing terminals are connected together to form a pair of connected terminals. In the pair of connected terminals, the negative-electrode terminal and the air-electrode terminal are connected through welding or other methods.

Abstract: An air electrode includes a current collector, a catalyst layer, and a water repellent membrane provided in this order. The catalyst layer has a first face in contact with either one of the current collector and the water repellent membrane, a second face in contact with either other of the current collector or the water repellent membrane, and a plurality of through holes, through which the first face and the second face communicate with each other. The through holes each have a constriction with an inner diameter smaller than either of an opening diameter in the first face and an opening diameter in the second face.

Abstract: An active material layer of a metal negative electrode includes: active material particles including a negative active material; and an additive having particles larger in average particle size than the active material particles. The metal negative electrode is immersed in an alkaline aqueous solution, and the additive is eluted into the alkaline aqueous solution. In a place where the additive is previously found, a space is defined in the active material layer.

Abstract: A method for producing an air electrode includes a kneading step of kneading an oxygen reduction catalyst, a conductive auxiliary agent, and a water-repellent resin (binder) in a water solvent; and a rolling step of rolling with a roller the kneaded product produced in the kneading step. The rolling step includes rolling the kneaded product with the roller several times in many directions (at least two or more different rolling directions). In the formed air electrode, the water-repellent resin is fiberized in the air electrode, and the fibers thereof are oriented in many directions to form a netlike shape.

Abstract: A metal-air battery comprises a casing including a first surface having breathability and second surface different from the first surface; and a positive electrode housed in the casing, a negative electrode housed in the casing, a positive-electrode terminal electrically connected to the positive electrode and exposed from the casing, a negative-electrode terminal electrically connected to the negative electrode and exposed from the casing, and an adhesive layer containing an adhesive and provided on a portion of the second surface.

Abstract: In a metal negative electrode, a current collector includes a through-hole or a recess provided to extend from a front surface of a planar plate toward a back surface of the planar plate. A distance from a midpoint of a joining boundary to a point on a surface of the current collector is designated as a region dividing distance, the point defining a distance less than a maximum distance between the midpoint and a side or a surface of the current collector. In the current collector, a first region is a region defined by distances from the midpoint, the distances being a distance equal to the region dividing distance and distances greater than the region dividing distance, and, in the current collector, a second region is a region defined by distances from the midpoint that are less than the region dividing distance.