Abstract: A carbonaceous electrode having improved capacities for doping and dedoping of a cell active substance, such as lithium, and suitable for a non-aqueous solvent-type secondary battery, is constituted by a carbonaceous material having a specific microtexture. The carbonaceous material is characterized by it's ability to provide an electrochemically lithium-doped product showing a main resonance peak which is shifted by 80-200 ppm to a lower magnetic field side from a resonance line of LiCl as a reference substance when subjected to .sup.7 Li-NMR spectroscopy analysis.

Abstract: In a portable electronic apparatus, the positive and negative electrodes of a battery and a first and a second terminals included in a battery holding section sequentially contact each other, thereby feeding power to electronic circuitry built in the apparatus. This successfully stabilizes the circuitry. After the battery has been fully received in the battery holding section, the negative electrode of the battery contacts a third terminal provided in the battery holding section. As a result, a voltage signal is fed from the third terminal to the circuitry, so that the circuitry is free from malfunctions.

Abstract: A non-aqueous electrolyte secondary cell having a negative electrode, a positive electrode and a non-aqueous electrolytic solution, in which a carbonaceous material is used as an active negative-electrode material, is disclosed. The negative electrode is constituted by a carbon sintered mass obtained on sintering the carbonaceous material or a carbon sintered mass-current collector composite material. The secondary cell is improved in the amount of the active material packed in the negative electrode, energy density and in the charging/discharging efficiency. If the carbon sintered mass-current collector composite material is employed for the negative electrode, further improvement in the electrical conductivity and charging/discharging efficiency in the negative electrode is achieved.

Abstract: The battery holder enables rapid insertion and removal of a battery relative thereto. An open portion of the holder provides ready access for rapid and efficient battery insertion and removal. Biased contacts and a protruding lip portion at opposite ends of the battery holder securely retain the battery therein.

Abstract: A method for manufacturing Li.sub.2 Mn.sub.2 O.sub.4 which comprises the steps of providing LiMn.sub.2 O.sub.4 ; providing a lithium salt; forming a solution or suspension of the LiMn.sub.2 O.sub.4 and lithium salt in a liquid medium; and adding a reducing agent to the solution or suspension.

Abstract: A lithium secondary battery that includes a cathode containing, as an active material, a material that can be doped/undoped with lithium ions; an anode containing, as an active material, a lithium metal, a lithium alloy or a material that can be doped/undoped with lithium ions; and a liquid or solid electrolyte. In this lithium secondary battery, the active material used in the cathode is lithiated nickel dioxide containing gallium. As a result, the lithium secondary battery attains excellent cycle and overcharge resistance characteristics and has a high energy density.

Abstract: A manganese dry battery includes an anode zinc can made of a zinc alloy containing 0.001-0.5 wt. % of titanium and at least one element selected from the group consisting of 0.001-0.05 wt. % of indium and 0.001-0.05 wt. % of bismuth, or a zinc alloy further containing 0.01-0.4 wt. % of lead. Even without heavy metals such as Hg and Cd, the zinc alloy anode can has a corrosion-resistant property and mechanical strength equivalent to or greater than those of the conventional zinc anode can, thereby giving a low pollution zinc-carbon battery having a storage characteristic equivalent or superior to that of the conventional zinc anode can.

Abstract: A novel and improved rechargeable, lithium-ion battery system is composed of a plurality of individual electrochemical cells having positive and negative electrodes disposed in opposite face-to-face arrangement with a porous separator containing electrolyte therebetween, and wherein the positive and negative electrodes of adjacent cells are disposed in contact respectively with opposite sides of a common current-collecting element forming a unitary bipolar structure. The negative electrode comprises a layer of carbon adhered to one side of the current-collecting element while the positive electrode comprises a layer containing a lithium transition metal oxide or sulfide compound adhered to the other opposite side of the element. The unitary bipolar structures containing the positive and negative electrodes of adjacent cells include outer peripheral, electrically-insulating seal members, preferably in the form of plastic insulating rings, which are joined together in a sealed stacked array.

Abstract: A method of manufacturing a negative electrode for a lithium secondary battery includes the steps of mixing graphite particles as a main constituent that generates intercalation and de-intercalation of lithium ions with a compound including copper ions, obtaining graphite composite powder having copper oxide particles formed at least on a part of the surface of at least a part of the graphite particles by chemical reaction of the copper ions, and mixing the graphite composite powder with a binding material.

Abstract: The present invention relates to a supply battery arrangement having 3 terminals, for example a battery for a video camera recorder. This arrangement permits employing the battery both as an intelligent battery and as a non-intelligent battery capable of operating normally on devices of the standard video camera recorder type and also capable of communicating with a equipment or an intelligent device and displaying the state of charge with no additional terminals. The battery arrangement comprises a negative terminal (24) and a positive terminal (22) for supplying the equipment or the device with a voltage coming from the battery, a universal "T" terminal (26) operating as a thermal measuring means and a data terminal or a charge control output when it is employed by a computer, a charger or some other intelligent equipment or device.

Abstract: The present invention relates to compositions and methods for improving the performance of lead-acid storage batteries, and reducing corrosion in lead-acid storage batteries, including the plates, terminals, posts, and cables. Compositions of the invention include cathodic inhibitors and solutions of cathodic inhibitors.

Abstract: A lithium secondary battery comprises a negative electrode having lithium as an active material, a positive electrode comprising a boron-containing lithium-manganese composite oxide as an active material and a nonaqueous electrolyte comprising a solute and a solvent, the boron-containing lithium-manganese composite oxide having an atomic ratio between B and Mn (B/Mn) of 0.01 to 0.20 and an average valence of manganese before charge-discharge of at least 3.80, and the solvent being a mixed solvent containing 5 to 50% by volume of a butylene carbonate. This battery is highly reliable, since the positive electrode active material minimally decomposes and hence the internal resistance minimally increases, even when the battery is continuously charged at a high voltage by mistake.

Abstract: A cathode for use in an electrochemical cell having an anode and an electrolyte. The cathode includes a manganese dioxide active material and a titanate additive which includes at least one of BaTiO.sub.3 or K.sub.2 TiO.sub.3. The cathode of the present invention is particularly adapted for use in an electrochemical cell having a zinc anode and an alkaline electrolyte.

Abstract: A voltage regulator for a sealed rechargeable storage battery containing one or more rechargeable working cells and at least one regulator cell. The regulator cells are capable of consuming gas in a gas space within the sealed battery during charging of the working cells. The regulator cell is in gaseous communication with the gas space, and having a voltage stabilizer maintaining a preselected voltage range to the regulator cell and maintain a current to the regulator cell depending on the gas to be consumed.

Abstract: A method of controlling a power generating system comprising a plurality of metal-air cells and a pump for circulating an electrolyte solution through the cells. The method comprises sensing an operating condition of the generating system, and selectively energizing the pump as a function of the sensed operating condition whereby energizing the pump causes the electrolyte solution to be circulated through the cells.

Abstract: A battery having a positive electrode comprising delta Li.sub.x V.sub.2 O.sub.5, wherein x ranges from 0.9 to 1.0, wherein the Li.sub.x V.sub.2 O.sub.5 has admixed therewith a conductive material. The delta Li.sub.x V.sub.2 O.sub.5 may be formed chemically by reacting V.sub.2 O.sub.5 with a lithium salt to transform all of the V.sub.2 O.sub.5 into Li.sub.x V.sub.2 O.sub.5. Alternatively, and preferred is to form it by electrochemically reacting an admixture of V.sub.2 O.sub.5 and a lithium metal containing electrode in an electrochemical reactor cell having a lithium containing electrolyte in a non-aqueous solvent to transform all of the V.sub.2 O.sub.5 into Li.sub.x V.sub.2 O.sub.5, after which the Li.sub.x V.sub.2 O.sub.5 is removed from the cell and used as a predetermined electrode configuration for use in a lithium metal free secondary cell. The positive electrode is delta LiV.sub.2 O.sub.5 with a conductive material therewith. The delta form of LiV.sub.2 O.sub.

Abstract: An enclosed non-aqueous secondary cell is herein disclosed, in which a group of electrodes comprising positive and negative electrodes allowing absorption and release of a light metal and separators are accommodated in a closed-end cell-armoring can together with a non-aqueous electrolyte and an opening of the armoring can is closed by an insulating gasket positioned around the inner periphery of the opening of the can and a closing lid fitted in and supported by the gasket and simultaneously serving as a positive or negative terminal, wherein the closing lid comprises an explosion-proof valve capable of deforming towards the direction opposite to the group of electrodes in response to an increase in the internal pressure of the cell, a terminal cap provided with vent holes and arranged at the side of the explosion-proof valve opposed to the group of electrodes and a non-reverse type switch which is positioned between the explosion-proof valve and the terminal cap and serves to shut-off the electrical connect

Abstract: A battery housing device which includes a battery housing chamber which houses a battery, and a cover for closing the battery housing chamber. The cover includes an electrically conductive plate and a spring plate. The electrically conductive plate electrically contacts either the positive electrode or the negative electrode of a battery housed in the chamber. The spring plate is secured to the cover and supports the electrically conductive plate to be movable in a direction linking the positive electrode and the negative electrode of the battery together, to compensate for movement of the battery inside the chamber. The electrically conductive plate can have a protuberance which allows the electrically conductive plate to electrically contact the positive electrode when the battery is correctly inserted into the chamber, but which will not allow the electrically conductive plate to electrically contact the negative electrode of the battery when the battery is incorrectly inserted into the chamber.

Abstract: A battery pack has a plurality of slits located on an edge surface of the pack. Electrical terminals are positioned completely within the boundaries of the slits to protect the battery pack from electrical shorts in the event the pack comes into contact with an extraneous metal object, such as a coin or key. The slits extend all the way thorugh the battery pack, from the bottom surface to the top surface, such that the slits are open on three sides. This permits the battery pack to be attached to and detached from a mating connector in any one of three directions; specifcally, perpendicular to the upper surface of the battery pack, perpendicular to the lower surface of the pack, and perpendicular to the edge surface.

Abstract: An electrolyte system (40) for use in connection with an electrochemical cell (10). The cell (10) includes a positive (20) and a negative (30) electrode and the electrolyte system (40) disposed there between. The electrolyte system includes a liquid electrolyte adapted to provide ion transport between the positive and negative electrodes and a segmented block copolymeric support structure for engaging the liquid electrolyte.