Abstract: An oxygen permeable film including an aggregate of water-repellent particles and having an average particle size of the particles of 0.01 to 50 ?m has a contact angle with water of not less than 120° and super water repellency, and therefore has an excellent water vapor permeation inhibiting capability. As the particles, fluorocarbon resins such as polytetrafluoroethylene, polyvinyl fluoride and polyvinylidene fluoride are suitable. The specific surface area of the oxygen permeable film is preferably not less than 0.1 m2/g and not more than 500 m2/g.

Abstract: An alkaline battery of this invention includes: a negative electrode including a negative electrode mixture that contains a zinc alloy as an active material, the zinc alloy containing at least aluminum; an alkaline electrolyte; and a positive electrode. The alkaline electrolyte includes an aqueous KOH solution and LiOH and an aluminum compound that are dissolved in the aqueous KOH solution. The alkaline battery has excellent high-rate discharge characteristics.

Abstract: A non-aqueous electrolyte battery including a negative electrode including metal lithium or a lithium alloy as a negative electrode active material, a positive electrode including a fluorinated graphite as a positive electrode active material, a separator provided between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The concentration ratio [F]/[C] of fluorine atoms to carbon atoms on the surface of the fluorinated graphite is 1.0 or more and less than 1.8. This improves the large-current discharge characteristics particularly in a low temperature environment.

Abstract: It is aimed to provide a battery pack capable of securing safety by preventing A battery contained in the battery pack from entering a burning state even if the battery releases high-temperature gas in an abnormal state. An exhaust duct 1C for permitting the flow of gas released from the battery is provided and the gas is exhausted to the outside after reducing the temperature thereof in the exhaust duct 1C. A flow passage area of the exhaust duct 1C is in the range of not less than 0.5 mm2 and not more than 15 mm2 per 1 Ah of the battery capacity. The exhaust duct 1C is provided with a gas cooling portion 1L and a spark trapping portion 1M.

Abstract: An alkaline battery of this invention includes: a negative electrode including a negative electrode mixture that contains a zinc alloy as an active material, the zinc alloy containing at least aluminum; an alkaline electrolyte; and a positive electrode. The alkaline electrolyte includes an aqueous KOH solution and LiOH and an aluminum compound that are dissolved in the aqueous KOH solution. The alkaline battery has excellent high-rate discharge characteristics.

Abstract: The storage characteristics of an alkaline battery are improved by suppressing the production of hydrogen gas during storage. The alkaline battery includes a positive electrode, a negative electrode, and a conductive member in contact with the negative electrode. The negative electrode includes a zinc-containing negative electrode active material and an alkaline electrolyte, and the alkaline electrolyte includes a potassium hydroxide aqueous solution. The negative electrode active material, the alkaline electrolyte, and a contact surface of the conductive member with the negative electrode include the same metal element M, and the metal element M is a metal element other than zinc.

Abstract: A non-aqueous electrolyte battery including a negative electrode including metal lithium or a lithium alloy as a negative electrode active material, a positive electrode including a fluorinated graphite as a positive electrode active material, a separator provided between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The concentration ratio [F]/[C] of fluorine atoms to carbon atoms on the surface of the fluorinated graphite is 1.0 or more and less than 1.8. This improves the large-current discharge characteristics particularly in a low temperature environment.

Abstract: An electrical device comprises a positive electrode terminal for connection to the positive electrode of a battery, a negative electrode terminal for connection to the negative electrode of the battery, a load circuit receiving power from the positive and negative electrode terminals connected to the battery, a voltage detector detecting the voltage between the positive and negative electrode terminals, and a short circuiting portion for short-circuiting between the positive and negative electrode terminals when the voltage detected by the voltage detector becomes not larger than a particular preset voltage.

Abstract: It is aimed to provide a battery pack capable of securing safety by preventing A battery contained in the battery pack from entering a burning state even if the battery releases high-temperature gas in an abnormal state. An exhaust duct 1C for permitting the flow of gas released from the battery is provided and the gas is exhausted to the outside after reducing the temperature thereof in the exhaust duct 1C. A flow passage area of the exhaust duct 1C is in the range of not less than 0.5 mm2 and not more than 15 mm2 per 1 Ah of the battery capacity. The exhaust duct 1C is provided with a gas cooling portion 1L and a spark trapping portion 1M.

Abstract: A battery pack includes a battery having a risk of releasing a gas under abnormal conditions, a case that accommodates the battery, and an oxygen reducing portion that reduces an amount of oxygen within the case.

Abstract: An oxygen permeable film including an aggregate of water-repellent particles and having an average particle size of the particles of 0.01 to 50 ?m has a contact angle with water of not less than 120° and super water repellency, and therefore has an excellent water vapor permeation inhibiting capability. As the particles, fluorocarbon resins such as polytetrafluoroethylene, polyvinyl fluoride and polyvinylidene fluoride are suitable. The specific surface area of the oxygen permeable film is preferably not less than 0.1 m2/g and not more than 500 m2/g.

Abstract: An alkaline battery includes: a negative electrode including a zinc or zinc alloy powder as an active material; an alkaline electrolyte; and a positive electrode. The zinc or zinc alloy powder has a specific surface area of 0.01 to 10 m2/g, and the weight ratio of the electrolyte to the negative electrode active material is in the range of 0.1 to 2. This invention can provide an alkaline battery that is improved in electrolyte leakage resistance and high-rate discharge characteristics.

Abstract: An alkaline battery of this invention includes: a negative electrode including a negative electrode mixture that contains a zinc alloy as an active material, the zinc alloy containing at least aluminum; an alkaline electrolyte; and a positive electrode. The alkaline electrolyte includes an aqueous KOH solution and LiOH and an aluminum compound that are dissolved in the aqueous KOH solution. The alkaline battery has excellent high-rate discharge characteristics.

Abstract: A rectangular air battery includes: a first case having a bottom with air holes; a second case; and an insulating gasket with a substantially U-shaped cross-section. The first case and the second case are joined such that the opening of the second case faces the bottom of the first case, and are sealed by crimping the opening edge of the sidewalls of the first case onto the outer face of the second case, with the outer sidewalls of the insulating gasket interposed therebetween. A rib is provided on the bottom of the first case so as to protrude inward inside the first case. The rib extends along the four sidewalls of the first case and supports the inner lower end of the inner sidewalls of the insulating gasket, with at least a separator interposed therebetween.

Abstract: An electrical device comprises a positive electrode terminal for connection to the positive electrode of a battery, a negative electrode terminal for connection to the negative electrode of the battery, a load circuit receiving power from the positive and negative electrode terminals connected to the battery, a voltage detector detecting the voltage between the positive and negative electrode terminals, and a short circuiting portion for short-circuiting between the positive and negative electrode terminals when the voltage detected by the voltage detector becomes not larger than a particular preset voltage.

Abstract: An air battery that is excellent in heavy-load discharge characteristics and storage characteristics is provided by ensuring the stability of the three-phase interface of a catalyst layer of an air electrode. The air battery has an air electrode including a catalyst layer that is bonded under pressure to a current collector and a water-repellent film. The catalyst layer includes a catalyst for reducing oxygen, a promoter for decomposing a product of the oxygen reduction, conductive carbon, and a binder. A non-polymeric fluorine compound is added to the catalyst layer in order to enhance the water repellency of the catalyst layer.

Abstract: An alkaline battery includes: a negative electrode including a zinc or zinc alloy powder as an active material; an alkaline electrolyte; and a positive electrode. The zinc or zinc alloy powder has a specific surface area of 0.01 to 10 m2/g, and the weight ratio of the electrolyte to the negative electrode active material is in the range of 0.1 to 2. This invention can provide an alkaline battery that is improved in electrolyte leakage resistance and high-rate discharge characteristics.

Abstract: The storage characteristics of an alkaline battery are improved by suppressing the production of hydrogen gas during storage. The alkaline battery includes a positive electrode, a negative electrode, and a conductive member in contact with the negative electrode. The negative electrode includes a zinc-containing negative electrode active material and an alkaline electrolyte, and the alkaline electrolyte includes a potassium hydroxide aqueous solution. The negative electrode active material, the alkaline electrolyte, and a contact surface of the conductive member with the negative electrode include the same metal element M, and the metal element M is a metal element other than zinc.

Abstract: There is provided a thin air battery comprising a power-generating element including air diffusion paper and a water repellent film, the power-generating element sealed in a package composed of first and third sheet layers that cover the air electrode side and negative electrode side of the power-generating element, and a second sheet layer disposed in the peripheral portion between the two sheet layers and joined to the two sheet layers. The sheet layers are each composed of a thin film formed by stacking an alkali resistant polymer film having hydrogen gas permeability and a polymer film having gas barrier properties, and in each of the first and third sheet layers, the polymer film having hydrogen gas permeability is disposed on the internal surface side. According to the present invention, a thin air battery that has high energy density and has excellent long-term reliability is provided.

Abstract: A rectangular air battery includes: a first case having a bottom with air holes; a second case; and an insulating gasket with a substantially U-shaped cross-section. The first case and the second case are joined such that the opening of the second case faces the bottom of the first case, and are sealed by crimping the opening edge of the sidewalls of the first case onto the outer face of the second case, with the outer sidewalls of the insulating gasket interposed therebetween. A rib is provided on the bottom of the first case so as to protrude inward inside the first case. The rib extends along the four sidewalls of the first case and supports the inner lower end of the inner sidewalls of the insulating gasket, with at least a separator interposed therebetween.