Abstract: A current collector includes a support layer, a conductive layer, an adhesive layer, and a tab. The support layer is made of an electrically insulating resin composition. The conductive layer includes a body portion and an extension portion. The body portion is laminated on the support layer via the adhesive layer. The extension portion extends from the body portion. The extension portion is laminated on the support layer not via the adhesive layer. The tab is joined to the extension portion.

Abstract: A current collector includes a stack and a conductive member. The stack includes a support layer, a first conductive layer, and a second conductive layer. The support layer is made of an electrically insulating resin composition. The conductive member is disposed on the edge of the stack. The conductive member is joined to both the first conductive layer and the second conductive layer.

Abstract: A current collector includes a support layer and a first conductive layer. The first conductive layer is made of a metal. The first conductive layer is laminated on the support layer. The support layer contains acid-modified polyethylene terephthalate. According to the present disclosure, it is possible to increase the rigidity of the support layer while suppressing separation of the conductive layer from the support layer.

Abstract: A current collector includes a support layer, a first conductive layer, and a tab. The support layer is made of a resin composition having electrical insulation properties. The first conductive layer is laminated on the support layer. The tab includes a first fixed part and a first extended part. The first fixed part and the first extended part are made of metal. The first fixed part and the first extended part are provided integrally. The first fixed part extends along the first conductive layer. The first extended part is extended from the first fixed part. The first fixed part includes a plurality of first protruding portions. The first fixed part is fixed on the first conductive layer by the first protruding portions penetrating into the first conductive layer.

Abstract: A current collector includes a support layer, a first electrically conductive layer, and a first adhesion layer. The support layer is composed of a resin composition having electric insulation. The first electrically conductive layer is laminated on the support layer through the first adhesion layer. The first electrically conductive layer includes a first surface. The first surface faces the first adhesion layer. The first surface has been subjected to a chemical surface roughening treatment.

Abstract: A current collector includes a support layer, an electrically conductive layer, and a tab portion. The support layer is composed of a resin composition having electric insulation. The electrically conductive layer is laminated on the support layer. The tab portion is constituted by a film-formed member. The tab portion includes a tab body portion and a heat release portion. The tab body portion is connected with the electrically conductive layer. The tab body portion is configured to be able to be joined to another electrically conductive member such that electric conduction with the other electrically conductive member is established. The heat release portion has been folded multiple times.

Abstract: A current collector includes a support layer, an electrically conductive layer, and an intermediate electrically conductive layer. The support layer is made of a resin composition having an electrical insulation property. The electrically conductive layer is made of metal containing aluminum. The intermediate electrically conductive layer is made of metal containing magnesium. The electrically conductive layer is joined to the support layer via the intermediate electrically conductive layer.

Abstract: A current collector includes an insulative support layer, a conductive support layer, a first conductive layer, and a tab part. The insulative support layer is made of a resin composition having electrical insulation properties. The conductive support layer lies adjacent to the insulative support layer. The first conductive layer is laminated on both of the insulative support layer and the conductive support layer. The tab part lies next to the conductive support layer through the first conductive layer and is joined to the first conductive layer by ultrasonic joining.

Abstract: A bipolar electrode includes a first active material layer, a first current collector, an intermediate conductor, a second current collector, and a second active material layer that are stacked in order in a stacking direction, wherein the first active material layer is provided on a first surface of the first current collector, the second active material layer is provided on a second main surface of the second current collector, a second surface of the first current collector is bonded to a front surface of the intermediate conductor, a first main surface of the second current collector is bonded to a back surface of the intermediate conductor, the second active material layer is located inside the first active material layer when viewed from the stacking direction, and in a length direction, a length of the intermediate conductor is longer than lengths of the first current collector and the second current collector.

Abstract: A current collector includes a support layer, a first electrically conductive layer, and a tab portion. The support layer is composed of a resin composition having electric insulation. The first electrically conductive layer is laminated on the support layer. The tab portion is constituted by a film-formed member. The tab portion includes a tab body portion and a first heat release portion. The tab body portion is joined to the first electrically conductive layer by ultrasonic welding. The tab body portion extends so as to be away from the first electrically conductive layer. The first heat release portion is shorter than the tab body portion, in an extension direction of the tab body portion. The first heat release portion is not joined to the first electrically conductive layer by ultrasonic welding.

Abstract: An electrode is manufactured by forming an active material layer on a surface of an electrode current collector, forming a groove portion on a surface of the active material layer, and peeling off a part of the active material layer. An electrode current collector includes a metal foil and an adhesive layer. The metal foil includes a first region and a second region. The adhesive layer covers the first region. In the second region, the metal foil is exposed. The active material layer includes a first portion that covers the adhesive layer and a second portion that covers the second region. The groove portion is formed in each of the first portion and the second portion. The second portion is peeled off.

Abstract: A current collector includes a support portion and a conductive portion. The support portion includes an electrically insulating resin composition. The conductive portion includes a first conductive layer, a second conductive layer, and a third conductive layer. The first conductive layer and the second conductive layer extend from the support portion. The third conductive layer is disposed between the first conductive layer and the second conductive layer, is joined to both the first conductive layer and the second conductive layer, and extends from between the first conductive layer and the second conductive layer.

Abstract: A current collector includes a support portion, a first conductive layer, and a second conductive layer. The support portion includes an electrically insulating resin composition. The support portion includes a support layer and an extension portion. The first conductive layer is in contact with the support layer on a first side in a thickness direction of the support layer. The second conductive layer is in contact with the support layer on a second side in the thickness direction. The extension portion extends from the support layer in an orthogonal direction orthogonal to the thickness direction.

Abstract: An electrode includes a base material and an active material layer. The active material layer is disposed on a base material surface. One or more grooves are formed on an active material layer surface. The one or more grooves linearly extend along the surface of the active material layer. In a plan view, each of the one or more grooves includes an inlet region, an intermediate region, and an outlet region. Each of the inlet region and the outlet regions is configured such that a first pressure loss occurring when a fluid flows in a forward direction is smaller than a second pressure loss occurring when the fluid flows in a backward direction.

Abstract: A power storage module includes: a stacked electrode assembly which includes a plurality of electrodes stacked in a first direction and is impregnated with an electrolyte solution; and a housing accommodating the stacked electrode assembly. The housing and the stacked electrode assembly extend in a second direction perpendicular to the first direction. The power storage module further includes a plate-like member extending in the second direction and disposed facing the stacked electrode assembly within the housing. The plate-like member is disposed so that a thickness direction of the plate-like member is a third direction perpendicular to the first direction and the second direction. The plate-like member has a facing surface facing the stacked electrode assembly. At least a portion of the facing surface is curved or distorted along the second direction. The facing surface being curved or distorted forms a space between the facing surface and the stacked electrode assembly.

Abstract: A power storage module includes a stacked electrode assembly including a plurality of electrodes stacked in a first direction. The stacked electrode assembly has a circumferential surface extending in a second direction perpendicular to the first direction, and facing a housing. The power storage module includes an insulating sheet portion disposed between the circumferential surface and the housing and covers the circumferential surface. The insulating sheet portion has first and second insulating sheets extending in the second direction and covering a portion of the circumferential surface. The first and second insulating sheets partially overlap in a circumferential direction of the stacked electrode assembly. The second direction is the longitudinal direction of the overlapped region where the first insulating sheet and the second insulating sheet overlap.

Abstract: A stacked electrode assembly extends in a second direction perpendicular to a first direction which is a laminate direction of each of the electrodes and each of the separators. First and second surfaces of a metallic foil of the electrode each have an active-material coated area and an active-material uncoated area extending in the second direction. The active-material uncoated area of the second surface is located on the back of the active-material uncoated area of the first surface. The active-material uncoated area of the second surface has a first resin placement area in which a resin is disposed and which is located on the active-material coated area side of the second surface. Spaces are formed between the separator and end portions, in a third direction perpendicular to the first and second directions and on the first resin placement area side, of the active-material uncoated area of the second surface.

Abstract: A stacked electrode assembly includes a plurality of electrodes and a plurality of separators. The electrode and the separator are alternately stacked in a first direction. The stacked electrode assembly extends in a second direction perpendicular to the first direction. The stacked electrode assembly further includes a circumferential surface extending in the second direction. A length of the separator in a third direction perpendicular to the first and second directions is longer than a length of the electrode in the third direction. The circumferential surface has first and second primary surfaces in the first direction and first and second side surfaces in the third direction, the first and second side surfaces continuing to the first and second primary surfaces, respectively. The separator is welded on at least one of the first side surface and the second side surface across a length of the stacked electrode assembly in the first direction.

Abstract: A bipolar battery includes a positive electrode current collector, a positive electrode mixture layer, a separator, a negative electrode mixture layer, and a negative electrode current collector, which are layered one on another. The bipolar battery further includes a resin sealing layer that includes a low rigidity material layer which has a tensile modulus of elasticity of less than 35.0 kgf/mm2 and which is joined to the positive electrode current collector or the negative electrode current collector, and a high rigidity material layer which has a tensile modulus of elasticity of 35.0 kgf/mm2 or more and which is disposed on a face of the low rigidity material layer that is opposite from a face thereof that is joined to the positive electrode current collector or the negative electrode current collector.

Abstract: A method for manufacturing an electrode is provided, the method including coating and drying of an electrode paste and being able to highly suppress variations in the weight per unit area of the active material layer. The method for manufacturing an electrode disclosed herein includes the steps of: coating an electrode paste onto a current collecting foil from a die; and drying the coated electrode paste. Here, the current collecting foil is conveyed by a backup roll. A variation in at least one of thickness and width of the coated electrode paste is measured. The peripheral speed of the backup roll is changed according to a measurement result of the variation so that the variation becomes small.