Abstract: A solid electrolytic capacitor that includes: a valve-action metal substrate including a porous portion at a surface thereof; a dielectric layer on the porous portion; a solid electrolyte layer on the dielectric layer; a conductive layer on the solid electrolyte layer; and a cathode lead-out layer on the conductive layer. When viewed in a thickness direction, the solid electrolyte layer includes a central region at a center of the solid electrolyte layer and a peripheral region surrounding the central region and defining outer edges of the solid electrolyte layer. The peripheral region is higher than the central region in the thickness direction as measured from a reference surface including a highest point of the porous portion in the thickness direction and perpendicular to the thickness direction. The conductive layer is at least on the central region of the solid electrolyte layer.

Abstract: A power storage device having a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and a separator layer between the positive electrode and the negative electrode and including a gel electrolyte. At least one of the positive electrode active material layer and the negative electrode active material layer includes an electrode active material, an electrolytic solution, a first polymer compound that is not crosslinked, and a binder having a second polymer compound different from the first polymer compound.

Abstract: A power storage device having a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and a separator layer between the positive electrode and the negative electrode and including a gel electrolyte. At least one of the positive electrode active material layer and the negative electrode active material layer includes an electrode active material, an electrolytic solution, a first polymer compound that is not crosslinked, and a binder having a second polymer compound different from the first polymer compound.

Abstract: A power storage device having a laminated body and a portion of lower mechanical strength than the laminated body.

Abstract: A power storage device having a laminated body and a portion of lower mechanical strength than the laminated body.

Abstract: A laminated power storage device that includes a first end portion of a first current collector extends to an inside of an insulating adhesive portion relative to a first polarizable electrode layer, and a second end portion of a second current collector extends to an inside of the insulating adhesive portion relative to a second polarizable electrode layer.

Abstract: An electrical double layer capacitor having an electrolyte-containing layer between a first polarizable electrode layer and a second polarizable electrode layer. An insulating adhesive portion adheres to a first current collector and a second current collector and extends around the first and second polarizable electrode layers and the electrolyte-containing layer. A thickness of the insulating adhesive portion is larger than a sum of thicknesses of the first and second polarizable electrode layers and the electrolyte-containing layer.

Abstract: An electrical double layer capacitor having electrolyte-containing layer between a first polarizable electrode layer and a second polarizable electrode layer. An insulating adhesive portion adheres to a first current collector and a second current collector which at least partially face each other with the electrolyte-containing layer interposed therebetween. The insulating adhesive portion 15 extends around the first and second polarizable electrode layers and the electrolyte-containing layer. A thickness of the electrolyte-containing layer is larger than a difference between a thickness of the insulating adhesive portion and thicknesses of the first and second polarizable electrode layers.

Abstract: An electrical double layer capacitor having an electrolyte-containing layer between a first polarizable electrode layer and a second polarizable electrode layer. An insulating adhesive portion adheres to a first current collector and a second current collector and extends around the first and second polarizable electrode layers and the electrolyte-containing layer. A thickness of the insulating adhesive portion is larger than a sum of thicknesses of the first and second polarizable electrode layers and the electrolyte-containing layer.

Abstract: An electrical double layer capacitor having electrolyte-containing layer between a first polarizable electrode layer and a second polarizable electrode layer. An insulating adhesive portion adheres to a first current collector and a second current collector which at least partially face each other with the electrolyte-containing layer interposed therebetween. The insulating adhesive portion 15 extends around the first and second polarizable electrode layers and the electrolyte-containing layer. A thickness of the electrolyte-containing layer is larger than a difference between a thickness of the insulating adhesive portion and thicknesses of the first and second polarizable electrode layers.

Abstract: A laminated power storage device that includes a first end portion of a first current collector extends to an inside of an insulating adhesive portion relative to a first polarizable electrode layer, and a second end portion of a second current collector extends to an inside of the insulating adhesive portion relative to a second polarizable electrode layer.

Abstract: An electric storage device includes an electrolyte and an electric storage unit including a positive electrode including a positive-electrode collector electrode and a positive-electrode active-material layer disposed on the positive-electrode collector electrode; a negative electrode including a negative-electrode collector electrode and a negative-electrode active-material layer disposed on the negative-electrode collector electrode and facing the positive-electrode active-material layer; a first insulating layer bonded to the positive electrode and the negative electrode to isolate the positive electrode and the negative electrode from each other; and a region that is sealed with the first insulating layer in plan view and that holds the electrolyte between the positive electrode and the negative electrode, wherein an air permeability P of the first insulating layer satisfies the formula 1250 s/100 cc<P<95000 s/100 cc.

Abstract: A highly-reliable electrical storage device element and electrical storage device, in each of which on predetermined regions of predetermined end surfaces of a laminate forming an electrical storage component, sprayed end surface electrodes each having a high bond strength to the laminate are provided.

Abstract: An electrical storage unit that includes a positive electrode, which includes a positive-electrode collector electrode and a positive-electrode active material layer on the positive-electrode collector electrode, a negative electrode, which includes a negative-electrode collector electrode and a negative-electrode active material layer on the negative-electrode collector electrode, the negative-electrode active material layer facing the positive-electrode active material layer, and a first insulating layer bonded to the positive electrode and the negative electrode and separating the positive electrode from the negative electrode. The first insulating layer is bonded to part of a surface of the positive electrode and part of a surface of the negative electrode and includes a communication path for connecting the outside of the electrical storage unit to the inside of the electrical storage unit.

Abstract: A power storage device having: a laminated body formed by providing a separator layer between a first electrode which is one of a cathode and an anode and a second electrode which is the other electrode; an electrolyte; and a package which houses the laminated body and the electrolyte. At least two first electrode composite sheets are included which are each obtained by integrating a first collector electrode, a first electrode active material layer provided on one principal surface of the first collector electrode, and a separator layer covering at least part of the one principal surface, and the other principal surface of the first collector electrode of one first electrode composite sheet out of the at least two first electrode composite sheets is opposed to, and bonded to, the other principal surface of the first collector electrode of the other first electrode composite sheet.

Abstract: An electric storage device includes an electrolyte and an electric storage unit including a positive electrode including a positive-electrode collector electrode and a positive-electrode active-material layer disposed on the positive-electrode collector electrode; a negative electrode including a negative-electrode collector electrode and a negative-electrode active-material layer disposed on the negative-electrode collector electrode and facing the positive-electrode active-material layer; a first insulating layer bonded to the positive electrode and the negative electrode to isolate the positive electrode and the negative electrode from each other; and a region that is sealed with the first insulating layer in plan view and that holds the electrolyte between the positive electrode and the negative electrode, wherein an air permeability P of the first insulating layer satisfies the formula 1250 s/100 cc<P<95000 s/100 cc.

Abstract: An electrical storage unit that includes a positive electrode, which includes a positive-electrode collector electrode and a positive-electrode active material layer on the positive-electrode collector electrode, a negative electrode, which includes a negative-electrode collector electrode and a negative-electrode active material layer on the negative-electrode collector electrode, the negative-electrode active material layer facing the positive-electrode active material layer, and a first insulating layer bonded to the positive electrode and the negative electrode and separating the positive electrode from the negative electrode. The first insulating layer is bonded to part of a surface of the positive electrode and part of a surface of the negative electrode and includes a communication path for connecting the outside of the electrical storage unit to the inside of the electrical storage unit.

Abstract: A highly-reliable electrical storage device element and electrical storage device, in each of which on predetermined regions of predetermined end surfaces of a laminate forming an electrical storage component, sprayed end surface electrodes each having a high bond strength to the laminate are provided.