Abstract: Provided is a curable composition having excellent workability and being capable of forming a cured product having excellent heat resistance. The curable composition of the present invention includes a compound represented by Formula (1) below and a solvent: In Formula (1) below, R1 and R2 each represent a curable functional group, and D1 and D2 each represent a single bond or a linking group. L represents a divalent group having a repeating unit containing a structure represented by Formula (I) below and a structure represented by Formula (II) below. In Formula (I) and Formula (II) below, Ar1 to Ar3 each represent a group in which two hydrogen atoms are removed from an aromatic ring structure or a group in which two hydrogen atoms are removed from a structure in which two or more aromatic rings are bonded through a single bond or a linking group. X represents —CO—, —S—, or —SO2—, and Y represents —S—, —SO2—, —O—, —CO—, —COO—, or —CONH—. n represents an integer of 0 or greater.

Abstract: Disclosed is a flat-shaped battery including: a power generation element including a positive electrode, a negative electrode, a separator, and an electrolyte; a cylindrical case formed of a conductor, housing the power generation element, and having a circular bottom and a circular opening; a sealing plate formed of a conductor and closing the opening; an insulating member interposed between the case and the sealing plate; and a plate-shaped current collector disposed between the case and the positive electrode. The current collector is welded to the case and is in contact with the positive electrode. A welding point where the current collector is welded to the bottom is set so as to allow contact between the positive electrode and a center portion of the current collector to be maintained when the case is deformed such that a center portion of the bottom is displaced outward of the case.

Abstract: Disclosed is a flat-shaped battery including: a power generation element including a positive electrode, a negative electrode, a separator, and an electrolyte; a cylindrical case formed of a conductor, housing the power generation element, and having a circular bottom and a circular opening; a sealing plate formed of a conductor and closing the opening; an insulating member interposed between the case and the sealing plate; and a plate-shaped current collector disposed between the case and the positive electrode. The current collector is welded to the case and is in contact with the positive electrode. A welding point where the current collector is welded to the bottom is set so as to allow contact between the positive electrode and a center portion of the current collector to be maintained when the case is deformed such that a center portion of the bottom is displaced outward of the case.

Abstract: A holding case for holding a disc-like flat battery is disclosed. The flat battery is configured such that a sealing plate which also serves as a first electrode surface hermetically seals a battery case which also serves as a second electrode surface, with a ring-shaped gasket interposed therebetween. The holding case is in a resin-made box-like shape having an open end face through which the flat battery can be inserted and removed from an electrode surface of the flat battery. A side portion of the holding case is provided with a protrusion which protrudes radially inward from an edge of the side portion closer to the open end face. The protrusion is positioned at a location farther from a bottom portion of the holding case than the thickness of the flat battery.

Abstract: A flat battery is configured such that a sealing plate which serves as a negative electrode surface seals a battery case which serves as a positive electrode surface, with a gasket interposed therebetween. The flat battery is held in a resin case, and in this state the flat battery is contained in a battery package. The resin case includes an open end face through which the battery is inserted and removed, a side portion and a bottom portion which hold a side surface and/or a bottom surface of the battery, and a ring-shaped protrusion which protrudes radially inward from an edge of the side portion. The protrusion is supported on the edge in a bendable manner, and an inner diameter of the protrusion is smaller than an inner diameter of an exposed portion of the gasket. An emetic agent is applied to an outer surface of the resin case.

Abstract: A lithium primary battery including: a positive electrode containing a mixed crystalline manganese oxide; a negative electrode containing at least one selected from the group consisting of lithium and a lithium alloy; and a lithium-ion conductive non-aqueous electrolyte. The mixed crystalline manganese oxide contains at least ?-type manganese oxide and ?-type manganese oxide, and the ?-type manganese oxide has a crystallinity of 300 to 500. The mixed crystalline manganese oxide preferably has a specific surface area of 0.5 to 4 m2/g. The lithium alloy preferably contains at least aluminum in an amount of 0.2 wt % to 15 wt %.

Abstract: A lithium primary battery including: a positive electrode containing a mixed crystalline manganese oxide; a negative electrode containing at least one selected from the group consisting of lithium and a lithium alloy; and a lithium-ion conductive non-aqueous electrolyte. The mixed crystalline manganese oxide contains at least ?-type manganese oxide and ?-type manganese oxide, and the ?-type manganese oxide has a crystallinity of 300 to 500. The mixed crystalline manganese oxide preferably has a specific surface area of 0.5 to 4 m2/g. The lithium alloy preferably contains at least aluminum in an amount of 0.2 wt % to 15 wt %.