Abstract: A power storage device according to an aspect of the present disclosure includes: a casing including a bottom wall and a top wall opposite to the bottom wall; a storage battery; an electrical unit; and a cooling unit. The storage battery is disposed in the casing and separated from the bottom wall. The electrical unit is disposed in the casing and located closer to the top wall than the storage battery is. A first fan is disposed between the storage battery and the electrical unit and configured to direct air from the storage battery toward the electrical unit.

Abstract: A power storage device according to an aspect of the present disclosure includes: a casing including a bottom wall and a top wall opposite to the bottom wall; a storage battery; an electrical unit; and a cooling unit. The storage battery is disposed in the casing and separated from the bottom wall. The electrical unit is disposed in the casing and located closer to the top wall than the storage battery is. A first fan is disposed between the storage battery and the electrical unit and configured to direct air from the storage battery toward the electrical unit.

Abstract: An electricity storage device includes: an electrode group that includes a first electrode, a second electrode, and a separator electrically insulating the first electrode from the second electrode; an electrolyte; a case that accommodates the electrode group and the electrolyte and has an opening; and a sealing plate that seals the opening of the case. The sealing plate has a degassing valve. The degassing valve has a circular easily breakable part. The easily breakable part has a linear first groove, a linear second groove, and a linear third groove. Firs(ends of the first groove, the second groove, and the third groove meet at the Center of the easily breakable part.

Abstract: In an electricity storage device, a case 1 in which an electrode group is accommodated includes a first main wall 11 and a second main wall 12 that face each other, a first side wall 13 and a second side wall 14 through which the first main wall 11 and the second main wall 12 are coupled with each other at both sides of the first main wall 11 and the second main wall 12, a top wall 15 on which an external terminal is disposed, and a bottom wall 16. The electrode group is accommodated in the case 1 while both end surfaces of the electrode group in a stacking direction of positive electrode plates and negative electrode plates face an inner surface of the first main wall 11 and an inner surface of the second main wall 12.

Abstract: A positive electrode for a lithium ion capacitor includes a positive electrode current collector with a three-dimensional network structure and a positive electrode mixture which contains a positive electrode active material and with which the positive electrode current collector is filled. The positive electrode current collector contains aluminum or an aluminum alloy. The positive electrode active material contains a porous carbon material that reversibly carries at least an anion. The positive electrode has an active material density of 350 to 1000 mg/cm3.

Abstract: An alkali metal ion capacitor includes a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and an electrolyte containing alkali metal ions and anions, wherein the separator has a thickness of 10 ?m or less, the positive electrode includes a positive electrode current collector having a three-dimensional mesh-like metal skeleton and a positive electrode active material held on the positive electrode current collector, the negative electrode includes a negative electrode current collector having a three-dimensional mesh-like metal skeleton and a negative electrode active material held on the negative electrode current collector, the positive electrode has a maximum surface roughness Rz1 of 35 ?m or less and the negative electrode has a maximum surface roughness Rz2 of 35 ?m or less.

Abstract: A capacitor includes an electrode group that includes a positive electrode including a positive electrode active material and a porous positive electrode current collector that holds the positive electrode active material, a negative electrode including a negative electrode active material and a porous negative electrode current collector that holds the negative electrode active material, and a first separator disposed between the positive electrode and the negative electrode; a nonaqueous electrolyte having alkali metal ion conductivity; a case that hermetically seals the electrode group and the nonaqueous electrolyte; an alkali metal supply source disposed between the electrode group and the case; and a second separator disposed between the electrode group and the alkali metal supply source. At least the negative electrode contains an alkali metal introduced by pre-doping using the alkali metal supply source. The second separator has a thickness of 5 to 60 ?m.

Abstract: An alkali metal ion capacitor includes a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a separator disposed between the positive electrode and the negative electrode, and an electrolyte. The electrolyte contains an alkali metal salt and an ionic liquid. The alkali metal salt is a salt of a first alkali metal ion serving as a first cation and a first anion. The negative electrode active material is pre-doped with a second alkali metal ion until the potential of the negative electrode reaches 0.05 V or less with respect to a second alkali metal. The alkali metal ion capacitor has an upper-limit voltage for charging and discharging of more than 3.8 V.

Abstract: An electrode group includes a plurality of first electrodes including sheet-shaped first current collectors and a first active material carried on the first current collectors, a plurality of second electrodes including sheet-shaped second current collectors and a second active material carried on the second current collectors, and sheet-shaped separators disposed between the first electrodes and the second electrodes. The first electrodes and the second electrodes are alternately stacked with the separators disposed between the first electrodes and the second electrodes, and the first current collectors each include a first metal porous body.

Abstract: An electricity storage device includes an electrode group including a first electrode, a second electrode, and a separator that electrically insulates the first electrode and the second electrode, an electrolyte, a bottom-closed case having an open edge and accommodating the electrode group and the electrolyte, and a sealing plate that seals the open edge of the case, the sealing plate having a first principal surface that faces an outside of the case and a second principal surface that faces an inside of the case. The first electrode includes a sheet-shaped first current collector and a first active material carried on the first current collector, and the second electrode includes a sheet-shaped second current collector and a second active material carried on the second current collector.

Abstract: An electricity storage device includes an electrode group including a plurality of first electrodes, a plurality of second electrodes, and separators that electrically insulate the plurality of first electrodes and the plurality of second electrodes, an electrolyte, a case having an opening and accommodating the electrode group and the electrolyte, a sealing plate that seals the opening of the case, a first terminal plate including a first external terminal and disposed on a first principal surface side of the sealing plate, a first connection member that electrically connects the plurality of first electrodes and the first terminal plate, and a first gasket that electrically insulates the first terminal plate and the first connection member from the sealing plate.

Abstract: Provided are a nonaqueous-electrolyte battery in which short circuits between the positive- and negative-electrode layers can be suppressed with certainty and a method for producing the battery. A nonaqueous-electrolyte battery 100 includes a positive-electrode active-material layer 12 containing a Li-containing oxide; a negative-electrode active-material layer 22 on which deposition of Li metal can occur; and a sulfide-solid-electrolyte layer (SE layer) 3 disposed between these active-material layers 12 and 22. The SE layer 3 of the nonaqueous-electrolyte battery 100 includes a powder-formed layer 31 and a dense-film layer 32 formed on a surface of the powder-formed layer 31 by a vapor-phase process.

Abstract: Provided are a nonaqueous-electrolyte battery in which short circuits between the positive- and negative-electrode layers can be suppressed with certainty and a method for producing the battery. A nonaqueous-electrolyte battery 100 includes a positive-electrode active-material layer 12 containing a Li-containing oxide; a negative-electrode active-material layer 22 on which deposition of Li metal can occur; and a sulfide-solid-electrolyte layer (SE layer) 3 disposed between these active-material layers 12 and 22. The SE layer 3 of the nonaqueous-electrolyte battery 100 includes a powder-formed layer 31 and a dense-film layer 32 formed on a surface of the powder-formed layer 31 by a vapor-phase process.

Abstract: The present invention provides a molded sonic absorber excellent in sound absorption action for a sound with a wavelength in a human audible range. More specifically, the present invention provides a molded sonic absorber obtained by mixing: a chip of a cellulose acetate fiber as a component (A) ; a chip of a polyurethane foam as a component (B); and a urethane resin-based adhesive as a component (C), followed by compression molding.