Abstract: The invention relates to an essentially flat electrode of an electrochemical system, such as a battery or a capacitor. Said electrode is comprised of at least one conductive (3) and of a storage layer (4), which is connected to said conductive layer, has a lattice structure, is comprised of woven or knit plastic threads (5) that are rendered conductive, and in which electro-active material is embedded. The aim of the invention is to improve the volumetric and gravimetric energy density with an adequate mechanical stability and simplified production.

Abstract: A flat, flexible electrochemical cell is provided. The within invention describes various aspects of the flat, flexible electrochemical cell. A printed anode is provided that obviates the need for a discrete anode current collector, thereby reducing the size of the battery. An advantageous electrolyte is provided that enables the use of a metallic cathode current collector, thereby improving the performance of the battery. Printable gelled electrolytes and separators are provided, enabling the construction of both co-facial and co-planar batteries. Cell contacts are provided that reduce the potential for electrolyte creepage in the flat, flexible electrochemical cells of the within invention.

Abstract: Provided is an electrode material for non-aqueous secondary batteries which comprises an active material coated with a coating material containing a coating compound comprising Al and O, where peaks of 27Al of solid NMR measured by spinning a sample of the coating material about a magic angle axis satisfy specific conditions, and a non-aqueous secondary battery containing the electrode material is further provided.

Abstract: An electrochemical cell including a cathode, an electrolyte in ionic contact with the cathode, and an anode in physical contact with the electrolyte, wherein the anode contains a controlled release anode composition that includes at least a first anode active material and at least a first controlled release agent in physical contact thereto for tentatively isolating the first anode active material from the electrolyte in the beginning of a cell operation for a delayed reaction of the first anode active material. Preferably, the anode further contains an initial-stage anode active material in direct contact with the electrolyte. Such a controlled release anode can be used in a variety of electrochemical cells including metal-air batteries, such as a zinc-air battery, for an extended period of operating time.

Abstract: An air-hydrogen battery with high energy density and satisfactory cycle characteristics is provided.

Abstract: For providing a non-aqueous electrolyte secondary battery having excellent storage characteristics when stored in the charged state under a high temperature condition, the non-aqueous electrolyte or the negative electrode is made to contain divinylethylene carbonate, thereby to form a film derived from divinylethylene carbonate on the surface of the negative electrode material.

Abstract: An organic electrolytic solution and a lithium secondary battery employing the same, wherein the organic electrolytic solution for a lithium secondary battery includes a polymer adsorbent having an ethylene oxide chain capable of being adsorbed into a lithium metal, a material capable of reacting with lithium to form a lithium alloy, a lithium salt, and an organic solvent. The organic electrolytic solution may be applied to all types of batteries including lithium ion batteries, lithium polymer batteries and lithium metal polymer batteries using a lithium metal for a negative electrode material, and the like. In particular, when the organic electrolytic solution is utilized in a lithium metal polymer battery, it serves to stabilize the lithium metal, and to increase the lithium ionic conductivity, thereby improving the cycle characteristics and charging/discharging efficiency of the battery.

Abstract: A method for adhesion of wound electrodes or electrode lamination for use in a lithium-ion secondary battery, comprising acts of dissolving a polymer applied on electrode sheets in a selected solvent; applying the solvent containing polymer on surfaces of the electrode sheets; and vaporizing the solvent by heating to laminate electrode sheets together is disclosed.

Abstract: Disclosed is a method of fabricating a rechargeable lithium battery and a rechargeable lithium battery fabricated by the same. In this method, an electrolyte is placed between a positive electrode and a negative electrode to prepare an electrode element, and the electrode element is pulse charged.

Abstract: A cadmium negative electrode for a nickel cadmium storage battery, the electrode comprising an electrode plate and a resin layer coating at least one surface of the electrode plate, the electrode plate comprising a cadmium compound as an active material, the resin layer comprising polyvinyl pyrrolidone and a product of an addition reaction of a styrylpyridinium salt to polyvinyl alcohol.

Abstract: This invention relates to a graphite and/or carbon black-containing cathode coating dispersion which is suitable for battery production. The dispersion is water, acid and alkali resistant and also electrically conductive when coated on cathode surfaces. The dispersion is a water-based system which contains a binder which is an epoxy resin and is cured with an amine curative. The dispersion is maintained as a two-pot compound wherein the epoxy dispersion is mixed with an amine curative at the time of application. The epoxy resins are preferably a Bisphenol A or Bisphenol F Epichlorohydrin based epoxy or epoxy novalac.

Abstract: A positive active material for a rechargeable lithium-sulfur battery includes a core of a sulfur compound and a surface-passivation layer formed on the core. The surface-passivation layer is made of a coating-element-included compound selected from the group consisting of a coating-element-included hydroxide, a coating-element-included oxyhydroxide, a coating-element-included oxycarbonate, a coating-element-included hydroxycarbonate, a mixture thereof.

Abstract: A process of manufacturing a positive active material for a lithium secondary battery includes preparing a coating-element-containing organic suspension by adding a coating-element source to an organic solvent, adding water to the suspension to prepare a coating liquid, coating a positive active material with the coating liquid, and drying the coated positive active material.

Abstract: The present invention is directed to providing a lithium carbonate passivation layer on lithium through exposure of the active material to gaseous carbon dioxide prior to cell assembly. This results in an electrochemical cell which possesses improved safety and voltage delay characteristics in comparison to prior art cells comprising unexposed lithium. The preferred cell is of a lithium oxyhalide chemistry.

Abstract: A layered hydrogen absorbing alloy electrode for an alkaline electrochemical cell. The layered electrode comprises a outer layer comprising a metal oxide, metal sulfide or mixtures thereof. The outer layer reduces the internal pressure of electrochemical cell.

Abstract: A positive electrode for a rechargeable lithium battery of preparing the same. The positive electrode includes a current collector, a positive active material layer coated on the current collector, and a surface-treatment layer. The positive active material layer includes a positive active material. The surface-treatment layer includes a compound selected from the group consisting of a coating-element-included hydroxide, a coating-element-included oxyhydroxide, a coating-element-included oxycarbonate, a coating-element-included hydroxycarbonate, and a mixture thereof. The positive electrode is prepared by coating a current collector with a positive active material composition to form a positive active material layer, and treating the current collector coated with the positive active material layer with a coating liquid, and drying the treated current collector. The coating liquid includes a coating element or coating-element-included compound.

Abstract: A method for forming a lithium anode protective layer comprises activating the surface of the lithium metal anode and forming a LiF protective layer on the activated surface of the lithium metal anode.

Abstract: Provided are methods of preparing a cathode/separator assembly for use in electrochemical cells in which a microporous separator layer is coated on a temporary carrier substrate and a cathode active layer is then coated or laminated on the separator layer prior to removing the temporary carrier substrate from the separator layer. The microporous separator layer may comprise one or more microporous xerogel layers. Optionally, the cathode/separator assembly may comprise one or more protective coating layers which are in contact with at least one of the microporous xerogel layers, and one of the protective coating layers may be coated on the temporary carrier substrate prior to coating the separator layer. Also, provided are methods of preparing electrochemical cells utilizing cathode/separator assemblies prepared by such methods, and cathode/separator assemblies and electrochemical cells prepared by such methods.

Abstract: An alkali rechargeable battery having an anode principally comprising a magnesium-nickel alloy capable of storing hydrogen therein and releasing said hydrogen stored therein in electrochemical reaction, wherein said magnesium-nickel alloy constituting said anode has a surface having a coat layer provided thereon, and said coat layer comprises an insulating material which is not dissolved in an electrolyte solution comprising an aqueous alkali solution used in said rechargeable battery, which restrains a reaction which cases a magnesium hydroxide when said magnesium-nickel alloy contacts with said electrolyte solution, and which allows hydrogen or hydrogen ion to pass therethrough. A process for the production of said rechargeable battery.

Abstract: A positive active material includes a core including a lithiated compound, and at least two surface-treatment layers formed on the core. The surface-treatment layer includes at least one compound selected from the group consisting of a coating-element-included hydroxide, a coating-element-included oxyhydroxide, a coating-element-included oxycarbonate, and a coating-element-included hydroxycarbonate. The coating element is selected from the group consisting of Mg, Al, Co, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, and As.

Abstract: A method for producing a cadmium negative electrode for alkaline batteries according to the present invention comprises a step of obtaining a cadmium active-substance impregnated electrode plate by impregnating said electrode substrate with a cadmium active substance; and a step of adding polyethylene glycol for forming a polyethylene glycol coating on the surface of said cadmium negative electrode or on the surface of said active substance by coating or impregnating said active-substance impregnated electrode with polyethylene glycol.

Abstract: A method for manufacturing a battery electrode plate includes the steps of mixing a solvent (3) with a polyolefin resin (1); preparing a gel-like solution (5), a gelled solution as a whole having a high viscosity, by heating the mixture of the polyolefin and the solvent at a temperature at which a part or the whole of the polyolefin resin melts; forming an insulation layer (8) by coating the gel-like solution on the surface of the positive electrode plate or negative electrode plate (7); and heating the positive electrode plate or negative electrode plate formed with the insulation layer.

Abstract: The anode structure comprises a metal constituent and a base at least partially contained by a separator. Additionally, a method of manufacture of an anode structure is provided, wherein a metal constituent and a base are integrally formed into a substantially solid structure, and a separator is provided to at least partially contain the metal constituent and the base.

Abstract: A nonaqueous secondary battery comprising a positive electrode and a negative electrode both containing a material capable of reversibly intercalating and deintercalating lithium, a nonaqueous electrolyte containing a lithium salt, and a separator, which has a least one protective layer on the negative electrode and/or the positive electrode. The battery has a high discharge potential, satisfactory charge and discharge cycle characteristics, and high safety.

Abstract: An electric cell using aluminum in a negative electrode has a positive electrode, the negative electrode containing aluminum or aluminum alloy, and an electrolyte arranged between the positive electrode and the negative electrode. The electrolyte includes: at least one ion selected from a group of a sulfate ion (SO42−) and a nitrate ion (NO3−); and an additive. The additive is selected from an organic acid, a salt of the organic acid, an hydrate of the organic acid, an ester of the organic acid, an ion of the organic acid, and derivatives thereof. Thus, the electric cell of the present invention using aluminum in a negative electrode allows the improvements in the voltage and the capacity of the cell as the generation of gas depending on the self-discharge can be prevented.

Abstract: The present invention relates to a stack battery structure, which possesses a high energy density and can avoid the existence of a die volume. Through the means of separating binder and active materials and of rearranging the position of binder, the positive/negative electrode thus fabricated can be glued with a polymeric separator membrane via the binder in the stacking and pressuring process without affecting the percentage of active materials in each unit of weight. This stack battery structure obviates the problem of a die volume caused by rolling the cell electrode into a spiral in the prior art. It also increases the energy density of the battery.

Abstract: An object is to provide with good productivity a practical lithium ion secondary battery which secures lightness in weight and safety without using a firm battery case and has reduced internal resistivity. The lithium ion secondary battery comprises a tabular roll type laminated electrode body in which a band-formed positive electrode (3) comprising a positive electrode active material layer (7) and a positive electrode current collector (6) alternates with a band-formed negative electrode (5) comprising a negative electrode active material layer (9) and a negative electrode current collector (10), having therebetween a band-formed rolled separator (4) which holds a lithium ion-containing electrolytic solution, the positive electrode (3) or the negative electrode (5) being adhered with two separators (4) by an adhesive layer (11).

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: A Ni/metal hydride secondary element having a positive nickel hydroxide electrode, a negative electrode having a hydrogen storage alloy, and an alkaline electrolyte, the positive electrode, provided with a three-dimensional metallic conductive structure, also contains an aluminum compound which is soluble in the electrolyte, in addition to nickel hydroxide and cobalt oxide. The aluminum compound is aluminum hydroxide and/or aluminum oxide, and the mass of the aluminum compound which is present in the positive bulk material mixture is 0.1 to 2 % by weight relative to the mass of the nickel hydroxide which is present. In combination with aluminum hydroxide or aluminum oxide, the positive electrode further contains lanthanoid oxidic compounds Y2O3, La2O3 and Ca(OH)2, as well as mixtures of these compounds.

Abstract: A nonaqueous secondary battery comprising a positive electrode and a negative electrode both containing a material capable of reversibly intercalating and deintercalating lithium, a nonaqueous electrolyte containing a lithium salt, and a separator, which has at least one protective layer on the negative electrode and/or the positive electrode. The battery has a high discharge potential, satisfactory charge and discharge cycle characteristics, and high safety.

Abstract: A secondary battery exhibiting a long cycle life and comprising a negative pole activating material made of lithium or zinc is provided, the battery at least having a negative pole made of lithium or zinc serving as the negative pole activating material, an electrolyte (electrolytic solution), a separator, a positive pole made of a positive pole activating material, a collecting electrode and a battery case, wherein at least the surface of the negative pole is covered with a film having a structure which allows ions relating to the battery reactions to pass through. Since growth of dendrite of lithium or zinc at the time of the charge can be prevented, short circuit between the negative pole and the positive pole can be prevented. Therefore, the charge/discharge cycle life can significantly be lengthened.

Abstract: To provide a method of manufacturing a battery capable of providing an equal amount of electrolyte in each battery and of enhancing productivity and coating machines employed thereof. The sensor detects a boundary from the collector exposed region C of the belt-shaped positive electrode to the positive electrode mixture layer exposed region B, on the basis of the detection timing, the shutter is withdrawn to open the flowing path and the proportioning pomp is driven. Following this, when the sensor detected a boundary from the positive electrode mixture layer exposed region B to a collector exposed region C, and on the basis of the detection timing, the shutter is protruded inside the flowing path to close the flowing path and the proportioning pump stops. As a result of this, the electrolyte stops to be delivered from the nozzle. The electrolyte layers are intermittently formed by repeating the same procedures.

Abstract: The following aspects (1) to (4) of the present invention can provide an electrode for nonaqueous electrolyte battery having excellent safety and charged storage properties and good high rate charge-discharge properties. (1) An electrode for nonaqueous electrolyte battery comprising a particulate active material having a porous film formed thereon. (2) An electrode for nonaqueous electrolyte battery comprising an active material having a filler held in pores. (3) An electrode for nonaqueous electrolyte battery comprising an active material which undergoes volumetric expansion and shrinkage during charge-discharge, having a filler held in pores. (4) The electrode for nonaqueous electrolyte battery according to Claus (1), wherein said porous film is an ionically-conductive film.

Abstract: A hydrogen absorbing alloy electrode employed as a negative electrode of an alkaline storage battery according to the present invention is obtained by adhering an electrode material consisting of hydrogen absorbing alloy powder and a binding agent composed of a polymeric material to a current collector, an aqueous polymeric material except for fluorocarbon resin is applied to a surface of the hydrogen absorbing alloy electrode, to form a coating layer, and a polymeric material in the coating layer is different from the polymeric material in the binding agent.

Abstract: A method for the manufacture of an electrode for an energy storage or conversion device comprises thermally spraying a feedstock mixture comprising an effective quantity of a source of a thermally protective salt and an active material or active material precursor onto a substrate to produce a film of the active material and salt. The film can have a thickness of about 1 to about 1000 microns.

Abstract: An electrode for use in an electrochemical cell comprising a current collecting substrate, an active material associated with the substrate; and a surface modifying component applied to at least a portion of the active material, wherein the surface modifying component is fabricated from at least one of the group consisting essentially of lithium niobates and lithium tantalates.

Abstract: This invention pertains to separators for use in electrochemical cells which comprise at least one microporous pseudo-boehmite layer, which separator is in contact with at least one protective coating layer positioned on the anode-facing side of the separator opposite from the cathode active layer in the cell; electrolyte elements comprising such separators; electrical current producing cells comprising such separators; and methods of making such separators, electrolyte elements and cells.

Abstract: For providing a non-aqueous electrolyte secondary battery having excellent storage characteristics when stored in the charged state under a high temperature condition, the non-aqueous electrolyte or the negative electrode is made to contain divinylethylene carbonate, thereby to form a film derived from divinylethylene carbonate on the surface of the negative electrode material.

Abstract: An electrode for the alkaline storage battery according to this invention includes a binding agent containing thermoplastic xylene-formaldehyde resin. Since the thermoplastic xylene-formaldehyde resin is non-aqueous, it will be not dissolved into water in the air or the alkaline electrolyte within the battery. In this case, the removal of the active material during the process of manufacturing the electrode or within the battery can be prevented by any of the techniques of immersing the active-material-applied or -filled electrode substrate in the solution of the thermoplastic xylene-formaldehyde resin dissolved; immersing it in the emulsion of the thermoplastic xylene-formaldehyde resin with an emulsifier; and applying or filling the active material slurry with the emulsion of the thermoplastic xylene-formaldehyde resin to or in the electrode substrate.

Abstract: The invention provides a non-aqueous electrolyte battery using a carbonaceous material capable of doping or dedoping lithium for an anode, a composite oxide comprising lithium and a transition metal for a cathode, and a non-aqueous electrolyte obtained by dissolving a carrier salt in a non-aqueous solvent as an electrolyte. The non-aqueous electrolyte comprises at least one monomer selected from the group consisting of isoprene, styrene, 2-vinylpyridine, 1-vinylimidazole, butyl acrylate, ethyl acrylate, methyl methacrylate, N-vinylpyrrolidone, ethyl cinnamate, methyl cinnamate, ionone, and myrcene, which, upon charging, forms a film on the surface of the anode.

Abstract: Disclosed is a battery comprising a positive electrode comprising a cathode active material layer, a negative electrode comprising an anode active material layer, and a sole porous separator disposed between the positive electrode and the negative electrode, wherein the positive electrode, the negative electrode and the separator are disposed in a casing containing an electrolyte, and wherein the porous separator comprises at least one layer of an aggregate form of particles of at least one insulating substance, the layer of the aggregate form of particles having a three-dimensional network of voids which function as pores of the porous separator and which are capable of passing ions therethrough.

Abstract: A battery including a polar solvent transportive, ionically conductive separator formed directly on an electrode is prepared by applying a coating composition containing a polymer or gel dispersed in a polar solvent directly to the electrode surface and solidifying materials in the coating composition to form a separator membrane.

Abstract: An object is to provide with good productivity a practical lithium ion secondary battery which secures lightness in weight and safety without using a firm battery case and has reduced internal resistivity. The lithium ion secondary battery comprises a tabular roll type laminated electrode body in which a band-formed positive electrode (3) comprising a positive electrode active material layer (7) and a positive electrode current collector (6) alternates with a band-formed negative electrode (5) comprising a negative electrode active material layer (9) and a negative electrode current collector (10), having therebetween a band-formed rolled separator (4) which holds a lithium ion-containing electrolytic solution, the positive electrode (3) or the negative electrode (5) being adhered with two separators (4) by an adhesive layer (11).

Abstract: A nonaqueous secondary battery of the present invention comprises a polyvinylidene fluoride resin layer formed on either or both of the surface of the positive electrode and the negative electrode. This polyvinylidene fluoride resin layer exhibits excellent liquid retaining properties and thus can be formed on the surface of the electrodes to reduce the capacity drop during high temperature storage and hence improve the high temperature storage properties of the battery.

Abstract: According to an exemplary embodiment a polyvinylidene diflouride homopolymer and solvent, such as acetone, are mixed together to form a solution. The solution is coated on a porous electrode. The coated electrode is immersed in a bath, such as denatured Ethanol, thereby creating a porous membrane on the electrode. The membrane coated electrode is then dried. After drying membrane coated electrode is placed opposite another porous electrode with the membrane positioned substantially between the first and second electrodes. The membrane is compressed between the electrodes dry bonding the membrane with the other electrode thereby forming a good physical bound. Alternatively the membrane may be formed on both electrodes and the membranes are then compressed between the electrodes thereby dry bonding the first and second electrodes together. In yet another embodiment the membrane may be formed separately then compressed between the electrodes thereby dry bonding the membrane with the two electrodes.

Abstract: A practical lithium ion secondary battery. The battery is light in weight and is safe without using a firm battery case. It also has reduced internal resistivity. The battery includes a tabular roll-type laminated electrode body in which a band-formed positive electrode alternates with a band-formed negative electrode, with a band-formed rolled separator being placed therebetween. The positive electrode includes a positive electrode active material layer and a positive electrode current collector. The negative electrode includes a negative electrode active material layer and a negative electrode current collector. The separator holds a lithium ion-containing electrolytic solution. The positive electrode or the negative electrode is adhered with two separators by an adhesive layer.

Abstract: A process for fabricating an electrode for use in an electrochemical cell comprising the steps of: a) associating a current collector with an active material having a surface; b) applying an overlayment material to a substrate; c) associating the overlayment material with at least a portion of the surface of the active material; d) at least alternatively partially curing the active material; and e) removing the substrate and, in turn transferring at least a portion of the overlayment material to at least a portion of the active material. The electrode produced is used in an electrochemical cell comprising a current collector, an electrode active material having a surface, and an overlayment material associated with at least a portion of the active material. The electrode further includes means for increasing compatability of the electrode with an associated electrolyte.

Abstract: A battery including a polar solvent transportive, ionically conductive separator formed directly on an electrode is prepared by applying a coating composition containing a polymer or gel dispersed in a polar solvent directly to the electrode surface and solidifying materials in the coating composition to form a separator membrane.

Abstract: A cathode for a lithium secondary battery wherein the surface of the cathode of which a composition containing a cathode active material, a conductive substance and a binder is supported on a current collector, is coated with at least one ion-permeable resin selected from resins having a temperature of deflection under load (measured at 18.6 kg/cm2 load according to JIS K 7207) not lower than 100 ° C., provide a lithium secondary battery with high energy density having improved safety.

Abstract: An electrode and separator composite comprises a separator and an electrode embedded in a polymer matrix. Application of an electrode slurry to a polymer coated separator and subsequent drying in a solvent enriched atmosphere forms a secondary battery structure characterized by a seamless composite structure.