Abstract: A battery pack spacer is divided into a first region and a second region, the first region includes an end portion in a first direction and occupies half of an entire region of the spacer in a second direction from the end portion in the first direction, the second region includes an end portion in the second direction and occupies half of the entire region of the spacer in the first direction from the end portion in the second direction, and the second region has higher compressibility in the single cell arrangement direction than the first region.

Abstract: A nonaqueous electrolyte secondary battery includes: a flat wound electrode body in which an elongated positive electrode, an elongated negative electrode, and an elongated separator (70) which electrically separates the positive electrode and the negative electrode from each other overlap each other and are wound in a longitudinal direction; and a nonaqueous electrolyte. The separator (70) includes a substrate layer (90) which is formed of a resin substrate and a heat resistance layer (80) which is formed on one surface of the substrate layer (90), and an adhesion strength between the substrate layer (90) and the heat resistance layer (80) is 0.19 N/10 mm to 400 N/10 mm.

Abstract: A flat electrode body of a battery has a first-side curved end positioned on a first side of an electrode body width direction and a second-side curved end positioned on a second side. A positive electrode innermost curved portion of a positive electrode sheet is disposed inside the first-side curved end. When the dimension from a positive electrode connecting portion to the end on the first side of the electrode body is defined as a distance and the dimension from the positive electrode connecting portion to the end on the second side of the electrode body is defined as a distance, the positive electrode connecting portion being in the positive electrode protrusion wound portion and connected to a terminal connecting portion of a positive terminal member, the terminal connecting portion is connected to the positive electrode connecting portion at a position satisfying the condition Ha?1.1Hb.

Abstract: A battery pack spacer is divided into a first region and a second region, the first region includes an end portion in a first direction and occupies half of an entire region of the spacer in a second direction from the end portion in the first direction, the second region includes an end portion in the second direction and occupies half of the entire region of the spacer in the first direction from the end portion in the second direction, and the second region has higher compressibility in the single cell arrangement direction than the first region.

Abstract: A flat electrode body of a battery has a first-side curved end positioned on a first side of an electrode body width direction and a second-side curved end positioned on a second side. A positive electrode innermost curved portion of a positive electrode sheet is disposed inside the first-side curved end. When the dimension from a positive electrode connecting portion to the end on the first side of the electrode body is defined as a distance and the dimension from the positive electrode connecting portion to the end on the second side of the electrode body is defined as a distance, the positive electrode connecting portion being in the positive electrode protrusion wound portion and connected to a terminal connecting portion of a positive terminal member, the terminal connecting portion is connected to the positive electrode connecting portion at a position satisfying the condition Ha?1.1Hb.

Abstract: An electrode for an electric double layer capacitor including a current collector electrode and an active substance carried on the current collector electrode, wherein the active substance is composed of a carbon-based fiber and a conductive polymer fiber formed by the electrospinning method, whereby a high capacity capacitor electrode having of a larger specific surface area than a conventional capacitor electrode and an electric double layer capacitor using the same is provided.

Abstract: A polyaniline/carbon composite composed of polyaniline or its derivative combined with a carbonaceous material, in which polyaniline/carbon composite, the polyaniline or its derivative is a conductive polyaniline or its derivative dispersed in a non polar organic solvent is undoped. This polyaniline/carbon composite is capable of providing an active substance for a polarizable electrode and the polarizable electrode is capable of providing an electric double-layer capacitor having a high electrostatic capacity, an excellent electric charge-discharge characteristics and an excellent cycle characteristics.

Abstract: A polyaniline/carbon composite composed of polyaniline or its derivative combined with a carbonaceous material, in which polyaniline/carbon composite, the polyaniline or its derivative is a conductive polyaniline or its derivative dispersed in a non polar organic solvent is undoped. This polyaniline/carbon composite is capable of providing an active substance for a polarizable electrode and the polarizable electrode is capable of providing an electric double-layer capacitor having a high electrostatic capacity, an excellent electric charge-discharge characteristics and an excellent cycle characteristics.

Abstract: An electrode for an electric double layer capacitor including a current collector electrode and an active substance carried on the current collector electrode, wherein the active substance is composed of a carbon-based fiber and a conductive polymer fiber formed by the electrospinning method, whereby a high capacity capacitor electrode having of a larger specific surface area than a conventional capacitor electrode and an electric double layer capacitor using the same is provided.

Abstract: A polyaniline/porous carbon composite composed of a conductive polyaniline or the derivative thereof dispersed, in a doped state, in a non-polar organic solvent and a porous carbonaceous material and an electric double layer capacitor having a superior conductivity and a high electrostatic capacity without using a binder using the same.