Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has a substantially circular outer circumference. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is fixed to an end portion from which the electrode starts being wound around the core. The regulating part regulates the axial movement of the electrode wound into the roll shape with respect to the core.

Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has an outer circumference that is substantially circular. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is provided for fixing an end portion from which the electrode starts being wound around the core. The regulating part is provided for regulating the axial movement of the electrode wound into the roll shape with respect to the core.

Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has a substantially circular outer circumference. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is fixed to an end portion from which the electrode starts being wound around the core. The regulating part regulates the axial movement of the electrode wound into the roll shape with respect to the core.

Abstract: A roll electrode is provided with a core, an electrode, a fixing part and a regulating part. The core extends in an axial direction and has an outer circumference that is substantially circular. The electrode has an expansion coefficient lower than that of the core. The electrode wound into a roll shape on the outer circumference of the core. The fixing part is provided for fixing an end portion from which the electrode starts being wound around the core. The regulating part is provided for regulating the axial movement of the electrode wound into the roll shape with respect to the core.

Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.

Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated in both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.

Abstract: A battery comprising a positive electrode (10), a negative electrode (20) and a separator (31) provided interposed between the positive electrode (10) and the negative electrode (20), characterized in that at least one surface of said separator (31) is bonded to said positive electrode (10) or negative electrode (20) via a porous resin layer (41, 33) containing a solid filler. This battery can provide a battery which exhibits a high energy density and an excellent cycle life performance even if the electricity-storing element is received in a flexible material case.

Abstract: A nonaqueous secondary electrolytic battery comprising an electricity-generating element formed by spirally winding a laminate of a positive electrode plate, a separating material and a negative electrode plate, and an electrolytic solution with which the separating material, if it is a separator, is impregnated. The electricity-generating element is sealed in a battery case formed by a resin-laminated sheet comprising a metal layer as a barrier layer. Only a pair of lead terminals are drawn to the exterior of the battery case. The resin sheet comprises an oriented resin layer laminated on both surfaces of the metal layer. The inner heat-fused layers are opposed and heat-fused to each other. A molten and solidified resin mass is formed protruding from the inner end of the welded portion toward the inner space of the battery by 0.1 mm or more. Alternatively, the welded portion is formed thinner at the outer end thereof than at the inner end thereof.

Abstract: A battery comprising a positive electrode (10), a negative electrode (20) and a separator (31) provided interposed between the positive electrode (10) and the negative electrode (20), characterized in that at least one surface of said separator (31) is bonded to said positive electrode (10) or negative electrode (20) via a porous resin layer (41, 33) containing a solid filler. This battery can provide a battery which exhibits a high energy density and an excellent cycle life performance even if the electricity-storing element is received in a flexible material case.

Abstract: A lead is connected to the electrode plate of the power generating element, and exposed externally from the deposited portion of a battery case. The portion of the lead crossing film edges is covered with two flat insulating covering resins which are thermally deposited to each other. At this portion, the covering resins and film edges are thermally deposited to each other. The covering resin is composed of two layers of an outer layer and an inner layer. At least the outer layer is colored and crosslink-coupled by irradiation of electron beams. The outer layer has a higher softening point than the inner layer.

Abstract: The process for the preparation of a battery according to the present invention comprises the following steps. An electricity-generating element having a positive electrode lead member and a negative electrode lead member drawn therefrom is inserted into a battery case. The opening of the battery case is sealed with both the positive electrode lead member and the negative electrode lead member leading to the exterior thereof. The position of the battery case and the electricity-generating element relative to each other is fixed. The positive electrode lead member and/or the negative electrode lead member are worked into an external terminal with a predetermined position on said battery case as reference. In accordance with this preparation process, the position of the external terminals can be corrected by working the lead members even if there is some variation in the position of the lead members.

Abstract: A lithium ion battery includes a thin film of an electrical insulating material such as resin, a positive collector made of an electrically conductive thin film provided on one side of said electrically insulative thin film, a positive compound layer provided on said positive collector, a negative collector made of an electrically conductive thin film provided on the other side of said electrically insulative thin film, a negative compound layer provided on said negative collector, and an electrolyte film provided in contact with at least one of said positive compound layer and said negative compound layer.

Abstract: The present invention provides a lithium secondary cell containing a positive electrode including a material which occludes and exudes lithium; a negative electrode containing a negative material including graphite; and a separator disposed between the positive and negative electrodes; wherein the quantity of lithium occluded in the negative material in a fully-charged state is less than 55% of the theoretical lithium occlusion capacity of the negative electrode.

Abstract: An electrolytic capacitor comprising a capacitor element and an electrolyte impregnated to the element, wherein the electrolyte comprises benzoic acid or its salt and an aliphatic saturated dibasic carboxylic acid having an odd number of carbon atoms or its salt.

Abstract: An electrolytic capacitor comprising a capacitor element and an electrolyte impregnated to the element, wherein the electrolyte contains a flurorocarboxylic acid or its salt as a solute dissolved in an organic solvent.

Abstract: An electrolytic capacitor comprising a capacitor element and an electrolyte impregnated to the element, wherein the electrolyte contains a fluorocarboxylic acid or its salt as a solute dissolved in an organic solvent.