Abstract: A group of electrodes are accommodated in a prismatic cell case of a rechargeable battery. Intervening separators are provided between positive and negative electrode plates arranged alternately in parallel to long lateral walls of the cell case. The positive electrode plates each include a lead portion having a surface on which at least one lead plate is attached. Lateral edges of the positive electrode plates protrude beyond the negative electrode plates on one side, and lateral edges of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side. The protruding portions form the lead portions. Upper open ends of the cell cases are closed by an integral lid member.

Abstract: A lithium secondary battery comprising an electrode in which an active material layer which includes an active material that electrochemically occludes and releases lithium is formed on a current collector, wherein cracks are formed in the active material layer by occlusion and release of lithium ions and thereafter a solid electrolyte is formed in the cracks in the active material layer.

Abstract: A rechargeable battery with a nonaqueous electrolyte using a constituent material, which has high energy density and a high level of safety. The constituent material includes a positive electrode having a lithium compound-containing active material and a current collector, and a negative electrode facing the positive electrode. The negative electrode an active material and a current collector. At least one of the current collectors being formed of an assembly of rectangular sheet pieces. The constituent material satisfies formula S/???×d, where d represents distance between the current collectors which face each other; S represents the largest facing area in one rectangular sheet piece in the positive electrode current collector and the negative electrode current collector; ? represents aspect ratio of one rectangular sheet piece in the positive electrode or negative electrode current collector; and ? is a coeffieient which is a number of 900 to 720.

Abstract: A positive electrode for a lithium-sulfur battery includes a positive active material including a sulfur-based compound, an electrically conductive material, an agent for increasing viscosity, and a binder. The agent is selected from a cellulose-based compound, an ionically conductive polymer, and a mixture thereof. The binder includes styrene-butadiene rubber.

Abstract: A battery comprises at least four cells each comprising a bath in the shape of a rectangular parallelepiped having a width direction dimension greater than a thickness direction dimension, and a power generation element, the power generation element being contained in the bath, the thickness direction sides of the cells facing each other, and the width direction sides of the cells being arranged side by side. A coolant for cooling the cells is allowed to flow along the width direction sides of the cells.

Abstract: A method for forming a corrosion resistant electrode for a battery includes supplying an electrode for use in the battery and exposing the electrode to an environment including vaporized carbon. At least some of the carbon from the environment may be transferred to the electrode.

Abstract: Electrodes for use in electrochemical devices are disclosed. More particularly coated electrode particles for use in solid electrochemical cells and materials and systems for improving electronic conductivity and repulsive force characteristics of an electrode network are disclosed. An article containing a plurality of distinct first particles that form an electrode network in which the distinct first particles are coated with a system of electrically conductive material is also disclosed. In some embodiments, the coating layer also includes a low refractive index material. In some embodiments, the coating layer of the electroactive material includes a plurality of second particles.

Abstract: An all solid state battery comprising: (a) a positive electrode current collector layer, (b) a positive electrode active material layer carried on the positive electrode current collector layer, (c) a negative electrode current collector layer, (d) a negative electrode active material layer carried on the negative electrode current collector layer, (e) a solid electrolyte layer interposed between the positive and negative electrode active material layers, and (f) a substrate carrying either of the positive and negative electrode current collector layers, the substrate comprising a metal sheet and a coating layer covering the surface of the metal sheet, the coating layer comprising at least one metal nitride layer.

Abstract: To provide a battery capable of obtaining an excellent electrolyte and improved characteristics. The battery has a battery device where a positive electrode and a negative electrode are laminated with a separator in-between inside a package member. The electrolyte containing a polymer compound synthesized by polymerizing a monomer is impregnated in the separator. The synthesis of the polymer compound is inhibited by existence of Cu, thereby a negative electrode collector layer consists of foil including a metal (e.g., Ni, Cr, Au), which is not copper and does not form an alloy with lithium, or Cu foil covering the above metal. Therefore, even if the polymer compound is synthesized after fabricating the battery, polymerization can smoothly progress and content of a remained monomer can be reduced. This can prevent deterioration of battery characteristics because decomposition or reaction of the monomer is controlled even if charge and discharge are repeatedly conducted.

Abstract: A method for treating electrode tabs of a crude cell for a lithium secondary battery, crude cell for a lithium secondary battery manufactured according to the method, and a lithium secondary battery employing the crude cell are disclosed.

Abstract: The invention provides a battery, which can improve a capacity and cycle characteristics. The battery comprises an electrode winding body, wherein a cathode and an anode are layered and wound with a separator in between inside a battery can. An electrolytic solution is impregnated in the separator. The electrolytic solution contains propylene carbonate, ethylene carbonate, a low viscosity solvent such as dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate, a carbonic acid ester of an unsaturated compound such as vinylethylene carbonate and vinylene carbonate, and a lithium salt. A content of the propylene carbonate is from 5 wt % to 20 wt %, and a content of the carbonic acid ester is from 0.3 wt % to 3 wt %.

Abstract: A battery, a battery electrode structure, and methods to make the same. The product and method comprise applying a layer of lead-tin containing alloy to substrates for anodes or cathodes for lead-acid batteries, in which the substrates are porous or reticulated.

Abstract: A lithium ion battery includes a cathode (10) having a plurality of nanoparticles of lithium doped transition metal alloy oxides represented by the formula LixCoyNizO2, an anode (20) having at least one carbon nanotube array (22), an electrolyte, and a membrane (30) separating the anode from the cathode. The carbon nanotube array includes a plurality of multi-walled carbon nanotubes (23). Preferably, an average diameter of an outermost wall of the multi-walled carbon nanotubes is in the range from 10 to 100 nanometers, and a pitch between adjacent multi-walled carbon nanotubes is in the range from 20 to 500 nanometers. In the carbon nanotube array, the lithium ions are able to intercalate not only inside the multi-walled carbon nanotubes, but also in the interstices between adjacent multi-walled carbon nanotubes. Thus a density of intercalation of the carbon nanotube array is significantly higher than that of graphite.

Abstract: A battery comprises a substrate having a cathode with a lower surface contacting the substrate and an opposing upper surface. A cathode current collector comprises conducting lines that contact the upper surface of the cathode. An electrolyte at least partially extends through the cathode current collector and contacts the cathode. An anode contacts the electrolyte, and optionally, an anode current collector contacts the anode. Also, because the cathode is formed on the substrate before the cathode current collector, the cathode current collector advantageously does not have to be fabricated out of a metal that is capable of withstanding further processing of the cathode, such as annealing of the cathode.

Abstract: A battery unit for a secondary battery that includes a positive electrode plate, a positive electrode tab, a negative electrode plate, a negative electrode tab, a separator, and short circuit preventing units, wherein the short circuit preventing units are formed on corresponding uncoated areas of the positive and negative electrode current collectors where the positive and negative electrode sheets are not formed, each short circuit preventing unit having a corresponding width greater than a width of the corresponding positive and negative electrode current collectors.

Abstract: A composite material including a first carbon foam structure including a network of pores and a second carbon foam structure including a network of pores. An intermediate bonding structure is disposed at least in part between the first and second carbon foam structures.

Abstract: A new cathode design has a first cathode active material of a relatively low energy density but of a relatively high rate capability contacted to the outer sides of first and second cathode current collectors and a second cathode active material having a relatively high energy density but of a relatively low rate capability in contact with the inner sides of the current collectors. The second cathode active material has a greater peripheral extend than the current collectors and the opposed layers of the first cathode active material between which it is sandwiched. This construction helps prevent delamination by promoting improved contact of the respective active materials to the current collectors. The present cathode design is useful for powering an implantable medical device requiring a high rate discharge application.

Abstract: A lithium/fluorinated carbon electrochemical cell having the CFx material supported on a titanium current collector screen sputter coated with a noble metal is described. The gold, iridium, palladium, platinum, rhodium and ruthenium-coated titanium current collector provides the cell with higher rate capability, even after exposure to high temperatures, in comparison to cells of a similar chemistry having the CFx contacted to a titanium current collector painted with a carbon coating.

Abstract: An alkaline cell having a flat housing, preferably of cuboid shape. The cell can have an anode comprising zinc and a cathode comprising MnO2. The housing can have a relatively small overall thickness, typically between about 5 and 10 mm. Cell contents can be supplied through an open end in the housing and an end cap assembly inserted therein to seal the cell. The end cap assembly includes an insulating sealing member having a circumferential skirt which surrounds wide portions of the anode current collector. This provides a barrier between said wide portions of the current collector and the cell housing. The end cap assembly includes a vent mechanism which can activate, when gas pressure within the cell reaches a level typically between about 100 and 300 psig (6.89×105 and 20.69×105 pascal gage). The cathode can be formed of a plurality of stacked slabs having aligned hollow centers forming a central core with anode material placed therein. A separator is between anode and cathode.

Abstract: A battery having a current collector constructed of carbon foam. The carbon foam includes a network of pores into which a chemically active material is disposed to create either a positive or negative plate for the battery. The carbon foam resists corrosion and exhibits a large amount of surface area. The invention includes a method for making the disclosed carbon foam current collector used in the battery.

Abstract: A non-aqueous electrolyte secondary battery has a positive electrode having a positive electrode collector, on which a positive electrode active material layer containing a positive electrode active material as a complex oxide of Li and transition metals are formed, and a negative electrode having a negative collector, on which a negative electrode active material layer is formed. The non-aqueous electrolyte secondary battery is a gel or solid non-aqueous electrolyte secondary battery having a battery device in which a positive electrode and a negative electrode are laminated with an electrolyte layer therebetween in a film-state packaging member constructed by metal foil laminated films, and containing a lithium salt, a non-aqueous solvent, and a polymer material. The concentration in mass ratio of a free acid in the electrolyte layer is 60 ppm and less.

Abstract: A lithium secondary cell has, on a conductive substrate (collector) a lithium layer containing metallic lithium or an alloy thereof, and further has a metal fluoride substance film containing at least one type metal fluoride substance.

Abstract: A graphite particle obtained by assembling or binding together a plurality of flat-shaped particles so that the planes of orientation are not parallel to one another, or a graphite particle in which aspect ratio is 5 or less or specific surface area is 8 m2/g or less or the size of crystallite in the direction of c-axis of the crystal is 500 ? or more and the size of crystallite in the direction of plane is 1,000 ? or less as measured by X ray broad angle diffraction, or a graphite particle in which pore volume of the pores having a size falling in a range of 102 to 106 ? is 0.4 to 2.0 cc/g per weight of graphite particle or pore volume of the pores having a size falling in a range of 1×102 to 2×104 ? is 0.08 to 0.4 cc/g per weight of graphite particle is suitable for production of negative electrode of lithium secondary battery, and a lithium secondary battery obtained therefrom is excellent in rapid charge-discharge characteristics, cycle characteristics, etc.

Abstract: The present invention provides a secondary electrochemical cell comprising a body of aprotic, non-aqueous electrolyte, first and second electrodes in effective electrochemical contact with the electrolyte, the first electrode comprising active materials such as a lithiated intercalation compound serving as the positive electrode or cathode and the second electrode comprising a carbon-carbon composite material infiltrated with polymeric binder and serving as the negative electrode or anode. Such an electrochemical cell has improved mechanical properties and cycle life as compared with similar secondary non-aqueous electrochemical cells having carbon-carbon composite anodes that are not incorporated with polymeric binder.

Abstract: An electrode material for an anode of a rechargeable lithium battery, containing a particulate comprising an amorphous Sn.A.X alloy with a substantially non-stoichiometric ratio composition. For said formula Sn.A.X, A indicates at least one kind of an element selected from a group consisting of transition metal elements, X indicates at least one kind of an element selected from a group consisting of O, F, N, Mg, Ba, Sr, Ca, La, Ce, Si, Ge, C, P, B, Pb, Bi, Sb, Al, Ga, In, Tl, Zn, Be, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, As, Se, Te, Li and S, where the element X is not always necessary to be contained. The content of the constituent element Sn of the amorphous Sn.A.X alloy is Sn/(Sn+A+X)=20 to 80 atomic %.

Abstract: Disclosed is a positive electrode for a non-aqueous electrolyte secondary battery, comprising: a positive electrode mixture layer; and a positive electrode current collector which carries the positive electrode mixture layer, with the positive electrode mixture layer comprising: at least one positive electrode active material; at least one conductive agent; at least one binder; and at least one thickening agent, and the thickening agent comprising a polymer containing at least one acrylonitrile unit and at least one —(CH2)n— structure portion where 6?n.

Abstract: A polymer electrolyte fuel cell comprising a polymer electrolyte made of an ion exchange membrane, catalyst layers disposed on both sides thereof and current collectors disposed on the outer sides thereof, wherein a solvent-soluble fluorine-containing polymer (preferably a polymer having a fluorine-containing aliphatic ring structure) having substantially no ion exchange groups, is incorporated in the current collectors. By the above construction, the current collectors can have a high water repellency for a long period of time, and the polymer electrolyte fuel cell can operate at a high output density constantly over a long period of time.

Abstract: A method of making a battery includes forming a strip of interconnected grids from a grid material by feeding a continuous strip of the grid material along a linear path aligned with the longitudinal direction of the strip and punching grid material out of the strip. Each interconnected grid includes a plurality of wires, with each wire having opposed ends joined to one of a plurality of nodes to define a plurality of open spaces. The method also includes modifying at least one of the wires at a position intermediate the opposed ends of the wire such that a first transverse cross-section taken intermediate the opposed ends of the wire differs from a second transverse cross-section of the wire taken at one of the opposed ends of the wire. The method further includes applying paste to the strip and cutting the strip to form a plurality of plates.

Abstract: Provided is a cathode electrode including a current collector, and a cathode electrode active material layer laminated on the current collector, a method of making the cathode electrode, and a battery including the cathode electrode. The cathode electrode active material includes particles having a core-shell structure with a sulfur-containing active material core, a conductor coating disposed on a surface of the active material core, and a binder coating disposed on the conductor coating. A high-performance lithium sulfur battery can be manufactured using the cathode electrode, since sufficient bondability can be attained with only a small amount of a binder.

Abstract: A battery positive grid is continuously cast of lead and thereafter cold worked to reduce its cross sectional thickness to change the microstructure of the lead and provide enhanced corrosion resistance and other properties needed for positive grids. The as cast thickness is reduced by not more than ½ or 2 to 1, to produce a positive grid with a lead weight of 0.5 to 2.1 grams per square inch of the area of the plan of the cold worked grid which improves the life of a battery in which it is used. A battery negative grid is continuously cast of lead and thereafter cold worked to reduce its cross sectional thickness 1.2:1 to less then 1.5:1 to increase the ultimate tensile strength needed for a lighter negative grid with a lead weight of 0.3 to 0.9 of a gram per square inch of the area of its plan.

Abstract: An electrochemical cell and corresponding electrode assembly are described in which an alkali metal anode and a cathode assembly are wound together in a unidirectional winding having substantially straight sides such that the winding will fit into a prismatic cell. The anode and cathode are preferably arranged in the winding to provide for even utilization of reactive material during cell discharge by placing cathode and anode material in close proximity throughout the electrode assembly in the proportions in which they are utilized. An anode current collector having a length or height shorter than at least one of the length or height of the cathode current collector or alkali metal strips operatively associated with the anode current collector is also described.

Abstract: The present invention relates to a current collector for an electrochemical cell. The current collector has a unique grid structure comprised of a frame supporting a plurality of radial strands as conductors radiating outwardly from a focal point on a connector tab. The frame and radial conductors are maintained in a fan-like orientation with respect to each other by two groups of concentric conductor strands, one located adjacent to the tab, the other spaced a substantial distance therefrom. The radiating conductors provide a more direct path to the connector tab for electron flow. This results in the current collector having reduced internal resistance in comparison to conventional current collector designs.

Abstract: An electrode and a method of manufacturing an electrode with a capacity to store hydrogen, has a metallic substrate material to which an active compound is applied. The active compound is obtainable from a paste which comprises a dry fraction and a liquid fraction. The dry fraction comprises a mixture of a pulverulent storage alloy for hydrogen, soot and polytetrafluoroethylene (PTFE), the particles of the storage alloy being covered with PTFE in the manner of fibrils; and the liquid fraction comprising a mixture of water and a higher alcohol which has from 3 to 6 C atoms.

Abstract: An electrode for a rechargeable lithium battery which includes a current collector and a thin film composed of active material that stores and releases lithium and deposited on the current collector, the electrode being characterized in that the current collector has irregularities on its surface and the thin film has spaces extending in a thickness direction of the thin film and configured to increase their width dimensions toward valleys of the irregularities on the current collector surface.

Abstract: To provide a method of manufacturing a battery capable of enhancing productivity and preventing deterioration of the battery performance. After attaching a positive electrode terminal to a belt-shaped electrode, electrolyte layers are formed. This can decrease the number of manufacturing processes after forming electrolyte layers, which effectively prevents that solvents in the electrolyte evaporates or the electrolyte layers are absorbed the water. Thereby, manufacturing yields of the battery can be enhanced, Additionally, a battery excellent in discharge capabilities and stable in voltage can be attained.

Abstract: It is intended to provide a nonaqueous electrolyte battery that satisfies both of a large discharge capacity and a superior cycle life characteristic by developing a novel negative electrode material. A nonaqueous electrolyte battery uses a negative electrode active material that is a compound expressed by Formula (1): AzMXy??(1) where A is at least one element selected from the alkali metals, M is at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Os, Ir, Pt, and Mg, X is at least one element selected from the group consisting of B, N, Al, Si, P, Ga, Ge, As, In, Sn, Sb, Pb, and Bi, 0?z?20, and 0.2?y?6.

Abstract: An anode structure for a metal air electrochemical cell is provided. The structure includes a plurality of compartments, which are at least partially isolated from one another. A metal air cell using the anode structure includes the anode structure having one or more of the compartments partially filled with anode material, a cathode in ionic communication with the anode material, and a separator electrically isolating the cathode and the anode material. The volume of anode material included in the one or more compartments is preferably based on the expected expansion of the anode material.

Abstract: A composite hydrogen storage material including 1) an active material having hydrogen storage capacity; and 2) a catalytic material having greater catalytic activity toward the dissociation of molecular hydrogen and/or oxidation of hydrogen than that of said active material having hydrogen storage capacity. Also, a fuel cell employing anodes formed from the composite hydrogen storage material. The fuel cell has the ability to start up instantly and can accept recaptured energy such as that of regenerative braking by operating in reverse as an electrolyzer.

Abstract: A nonaqueous-electrolyte secondary battery including a coil electrode formed by laminating an elongated positive electrode having a positive-electrode-mix layer formed on at least one surface of a positive-electrode collector and an elongated negative electrode having a negative-electrode-mix layer formed on at least one surface of a negative-electrode collector and by winding a laminate such that the positive electrode is positioned at the outermost position, wherein the positive-electrode-mix layer is formed on only one surface of the collector at the position adjacent to the outermost end of the positive electrode and/or the position adjacent to the innermost end of the positive electrode. The positive-electrode-mix layer is not formed on the positive-electrode collector at the outermost end of the positive electrode.

Abstract: A polymeric electrolyte and a lithium battery lithium employing the same. The polymeric electrolyte includes a cross-linked polyether urethane prepared by reacting a pre-polymer having a polyethylene oxide backbone and terminated with NCO, with a cross-linking agent, organic solvent and lithium salt. Since the polymeric electrolyte is electrochemically stable, a lithium battery having improved reliability and safety can be obtained by employing the polymeric electrolyte.

Abstract: An electrode for a rechargeable lithium battery includes a current collector and an active material layer formed on the current collector. The active material layer includes an active material, a binder and a water-soluble polymer. The binder is a copolymer of (metha)acrylic acid and (metha)acrylic alkylester, and an amorphous polypropylene homopolymer or an amorphous copolymer of propylene and a C2 to C8 olefin.

Abstract: A battery sheath made of formed and cold-rolled sheet metal as well as a process for manufacturing the battery sheath are proposed. In the process, cold-rolled strip stock is provided on at least one side with a coating of Ni, Co, Fe, Sn, In, Pd, Bi or their alloys in an electroplating bath, e.g., a Watts-type bath. As an additional component, the electroplating bath contains electrically conductive particles such as carbon, carbon black, graphite, TiS2, TaS2, MoSi2. These particles are deposited on the base material during electroplating together with Ni, Co, Fe, Sn, In, Pd, Bi or their alloys. The sheet metal side with, for example, the carbon-containing electroplated coating faces preferably inwardly when the sheet is formed into a battery sheath. Batteries with battery sheaths produced in this manner exhibit reduced increase in internal resistance, even with prolonged storage, as compared to known batteries.

Abstract: The nickel electrode for alkaline secondary battery according to the present invention is obtained by applying a paste containing active material particles comprising nickel hydroxide to a conductive substrate and drying the paste on the conductive substrate. In the above-mentioned nickel electrode for alkaline secondary battery, a conductive layer comprising sodium-containing cobalt oxide is formed on a surface of the active material particles and tungsten powder and/or tungsten compound powder is added on the active material particles.

Abstract: A manufacturing method for a sintered substrate of alkaline batteries is provided. The manufacturing method includes a first step for mixing particles with a pore former and applying the mixture to a porous substrate, and a second step for sintering the porous substrate and the applied mixture. The particles are made of nickel or principally made of nickel, and the surfaces of the pore former particles each have a coating made of nickel or principally made of nickel. The pore former can be made from resin or any other materials if it disappears when sintered. The pore former particles should preferably have a spheric shape, but is does not matter whether the pore former particles are solid or hollow. Using such sintered substrate for an electrode, an alkaline storage battery can exhibit a high performance.

Abstract: The electrode for a lithium secondary battery includes: a current collector; an interlayer containing Mo or W provided on the current collector; and a thin film composed of active material capable of lithium storage and release deposited on the interlayer.

Abstract: The present invention is concerned with a protective coating with current applied on a metallic collector of an electrode. The protective coating comprises a mineral binder vitreous or partly vitreous and optionally an electronic conduction additive. This coating is applied in the form of a solution or dispersion on the collector of the electrode and dried, so that it coats and protects at least part of the surface of the metal of the collector to prevent the formation of passivation films generated by active species produced by other components of the generator.

Abstract: An anode, and a battery using the anode is provided. The anode has a structure in which an anode current collector, an anode active material layer and a protective layer are laminated in this order. The anode active material layer includes Sn, and is alloyed with the anode current collector in at least a portion of an interface with the anode current collector. The protective layer include an element constituting a simple substance with a higher melting point than Sn such as C, Si or W, and not forming a compound with Sn. Thereby, even if the anode wound into a roll is subjected to heat treatment, fusion bonding between adjacent anodes can be prevented.

Abstract: A nickel electrode for alkaline storage battery according to the present invention is formed by applying a paste containing active material particles composed of nickel hydroxide to a conductive substrate and drying said paste, wherein a conductive layer consisting of sodium-containing cobalt oxide is formed on a surface of said active material particles, and titanium powder and/or titanium compound powder is added to the surface of said active material particles, and an alkaline storage battery according to the present invention uses as its positive electrode the above-mentioned nickel electrode for alkaline storage battery.

Abstract: A method of making a lead alloy grid for use in a plate for a lead acid battery that enables thin battery plates with a high surface area. The method of the present invention includes forming the lead alloy, such as by direct casting, to a very small thickness, then work hardening the cast strip to create a grid by forming indentations and protrusions in the thinly cast alloy strip, which in addition to strengthening the strip, provides a desirable surface topography for paste adhesion and interface characteristics. The work hardening, for example embossing, may further include splitting the strip at a high point of the protrusions and indentations to create perforated protrusions and indentations. The grid may then be used to make a plate by pasting an active mass onto the grid, steaming the pasted grid, and curing the pasted grid to provide a plate having a thickness of about 0.05 inch or less.

Abstract: In each of the cells that constitute an battery module, a plurality of positive electrode plates and negative electrode plates are layered parallel to the long lateral walls of prismatic cell cases with intervening separators therebetween, wherein lateral edge portions of the positive electrode plates protrude beyond the negative electrode plates on one side, and lateral edge portions of the negative electrode plates protrude beyond the group of positive electrode plates on the opposite side, the protruding portions forming lead portions.