Abstract: The present invention provides a nanostructured metal oxide material for use as a component of an electrode in a lithium-ion or sodium-ion battery. The material comprises a nanostructured titanium oxide or vanadium oxide film on a metal foil substrate, produced by depositing or forming a nanostructured titanium dioxide or vanadium oxide material on the substrate, and then charging and discharging the material in an electrochemical cell from a high voltage in the range of about 2.8 to 3.8 V, to a low voltage in the range of about 0.8 to 1.4 V over a period of about 1/30 of an hour or less. Lithium-ion and sodium-ion electrochemical cells comprising electrodes formed from the nanostructured metal oxide materials, as well as batteries formed from the cells, also are provided.

Abstract: A rechargeable battery including an electrode assembly having a first electrode and a second electrode; a case housing the electrode assembly; a cap plate coupled to the case; a terminal electrically connected to the electrode assembly and protruding from the cap plate; a connecting member on the cap plate, the connecting member including a body, a first short-circuit tab within the body and electrically connected to the first electrode, and a second short-circuit tab within the body and electrically connected to the second electrode; and a short-circuit member spaced from the first short-circuit tab and the second short-circuit tab.

Abstract: The lithium rechargeable battery of the present invention is provided with a current collector and an active material layer containing active material particles 10 supported on this current collector. The active material particles 10 are secondary particles 14 in which a plurality of primary particles 12 of a lithium transition metal oxide are aggregated, and have a hollow structure that contains a hollow section 16 formed inside the secondary particle 14 and a shell section 15 that surrounds the hollow section 16. A through hole 18 that penetrates from the outside to the hollow section 16 is formed in the secondary particle 14. The ratio (A/B) in a powder x-ray diffraction pattern of the active material particles 10, where A is the full width at half maximum of the diffraction peak obtained for the (003) plane and B is the full width at half maximum of the diffraction peak obtained for the (104) plane, satisfies the equation (A/B)?0.7.

Abstract: A binder for a rechargeable lithium battery includes a copolymer having a weight average molecular weight of about 10,000 to about 500,000 and including a repeating unit represented by Chemical Formula X and a repeating unit represented by Chemical Formula Y-1: The binder may be used in preparing an electrode for a rechargeable lithium battery and a rechargeable lithium battery including the electrode exhibits improved stability, rate capability, and cycle-life.

Abstract: An object of the present invention is to provide an aluminum alloy foil for an electrode current collector, the foil having a high strength and high strength after a drying process. The aluminum alloy foil can be manufactured at low cost. Disclosed is an aluminum alloy foil for electrode current collector, including 0.03 to 1.0% of Fe, 0.01 to 0.2% of Si, 0.0001 to 0.2% of Cu, 0.005 to 0.03% of Ti, with the rest being Al and unavoidable impurities. The aluminum alloy foil has Fe solid solution content of 200 ppm or higher, and an intermetallic compound having a maximum diameter length of 0.1 to 1.0 ?m in an number density of 2.0×104 particles/mm2 or more.

Abstract: In an aspect, a composite cathode active material a cathode and a lithium battery including the composite cathode active material, and a method of preparing the composite cathode active material is disclosed.

Abstract: Mixture of particles comprising a non-conducting or semi-conducting nucleus covered with a hybrid conductor coating and hybrid conductor chains located between the particles of the mixture to constitute a conductivity network, that is prepared by mechanical crushing. Due to a very good conductivity of the network, a low resistivity, a very good capacity under elevated current and/or a good density of energy, these mixtures of particles are advantageously incorporated in anodes and cathodes of electrochemical generators, resulting in highly performing electrochemical systems.

Abstract: In an aspect, a positive electrode for a lithium rechargeable battery including a current collector; a positive active material layer disposed on the current collector, wherein the positive active material layer includes a positive active material, active carbon, and an additive.

Abstract: The present invention provides an electrodeposited copper foil having a tensile strength of at least 300 MPa and elongation rate of at least 3.0% after heat treatment at 350° C. for 1 hour and provides a copper foil which prevents the breakage of a current collector (copper foil) while maintaining adhesiveness between the current collector (copper foil) and the active material in response to substantial expansion and contraction of a Si or Sn alloy-based active material. The foil is an electrodeposited copper foil having a roughened surface, the tensile strength of the copper foil being at least 300 MPa after heating at 350° C. for 1 hour, the elongation rate being at least 3.0% after heating at 350° C. for 1 hour, and respective surface area ratios (actual surface area/geometric surface area) of both sides of the copper foil (the side that is roughened and the side that is not roughened) being from 1.6 to 2.2.

Abstract: An electrode for a nonaqueous electrolyte secondary battery of an embodiment has an active material layer containing an active material and a binder containing fluorine, and a current collector bound to the active material layer. When a thermal decomposition start temperature of the binder is T1° C. and the thermal decomposition end temperature is T2° C., one or more signals are present for any of the mass number of 81, 100, 132, and 200 in a thermal decomposition mass analysis between thermal decomposition temperatures of T1 and T2. When a signal area of the mass spectrum in the range of T1-100° C. or higher but lower than T1° C. is X, and a signal area of the mass spectrum in the range of T1 or higher but the same or lower than T2° C. is Y, the X and Y satisfy a relation of X?Y.

Abstract: Provided is an electric storage device including: a first electrode plate, a second electrode plate having a polarity opposite to that of the first electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, wherein the first electrode plate includes a current collector, a conductive layer laminated onto the current collector, and a mixture layer laminated onto the conductive layer, the mixture layer contains a binder and primary particles of an active material as its constituents, and the primary particles as a constituent of the mixture layer are partially retained in the conductive layer.

Abstract: An electrode for a nonaqueous electrolyte secondary battery of an embodiment has an active material layer containing an active material and a binder containing fluorine, and a current collector bound to the active material layer. When a thermal decomposition start temperature of the binder is T1° C. and a thermal decomposition end temperature of the binder is T2° C., one or more peaks are present in an ion chromatogram of any mass number selected at least from 81, 100, 132, and 200 in a thermal decomposition gas chromatography mass analysis at the thermal decomposition temperature of (T1+T2)/2° C. When a peak area at T1° C. is X, and a peak area at T2° C. is Y, the X and Y satisfy a relation of 2X?Y.

Abstract: A lithium secondary battery exhibiting low temperature output characteristics is provided. The lithium secondary battery of the present invention includes a current collector 12, and an active material layer 14 which is supported on the current collector 12 and contains active material particles 30 and electrically conductive material 16. The active material particles 30 each have a shell composed of a lithium transition metal oxide, a hollow part formed in the shell, and a through hole penetrating the shell. The electrically conductive material 16 contained in the active material layer 14 are arranged both in the hollow part of the active material particles and between the active material particles 30.

Abstract: A layered electrode group according to the present invention includes a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate is formed into a substantial U-shape by disposing two active material retaining portions retaining the positive active material opposite to each other. The negative electrode plate is formed into a substantial U-shape by disposing two active material retaining portions retaining the negative active material opposite to each other. The positive electrode plate and the negative electrode plate are layered such that at least one active material retaining portion at the positive electrode plate is sandwiched between two active material retaining portions at the negative electrode plate.

Abstract: To provide a non-aqueous electrolyte secondary battery less subject to impact by vibration, impact, etc., and has stable characteristics. The non-aqueous electrolyte secondary battery includes: a positive electrode part in which a positive electrode active material layer is formed on a positive collector; a positive electrode which is provided with a positive electrode lead tab and which is integrally formed with the positive collector so as to be connected to a periphery of the positive electrode part through a curved portion continuing therefrom; a negative electrode part in which a negative electrode active material layer is formed on a negative collector; a negative electrode which is provided with a negative electrode lead tab and which is integrally formed with the negative collector so as to be connected to a periphery of the negative electrode part through a curved portion continuing therefrom; and a separator which is interposed between the positive and negative electrodes.

Abstract: The invention relates to a binder for an electrode of an electrochemical element. The binder is a polymer having an N-vinyl formamide unit, which suppresses the decline of battery performances due to deterioration of binding property and increase of internal resistance of the battery and improves the battery performance.

Abstract: In an aspect, a positive active material composition for a rechargeable lithium battery including a positive active material coated with a vanadium pentaoxide (V2O5) and an aqueous binder, a positive electrode including the same, and a rechargeable lithium battery including the positive electrode is disclosed.

Abstract: A bus bar holder for connecting electrode terminals of a plurality of batteries arranged in a lengthwise direction, the bus bar holder including a bus bar holder plate having an opening in a lengthwise direction thereof and configured such that at least some electrode terminals of the plurality of batteries are extendable through the opening and slidable along the opening; and a bus bar for electrically connecting at least two electrode terminals of adjacent batteries, wherein the bus bar holder plate includes a settling groove in which the bus bar is settled, and the bus bar attached to the electrode terminals is slidable when the electrode terminal slides along the opening.

Abstract: The present invention provides a composite anode for a battery comprising a copper current collector working electrode, at least one anode material comprising at least one of a carbon, a silicon, a conductive agent, and combinations thereof, wherein at least one anode material is deposited on a surface of the copper current collector working electrode to form the composite anode for a battery. An electrophoretic method for making this anode is provided. A lithium-ion battery having the composite anode is disclosed.

Abstract: A lithium-ion secondary battery (100A) has a negative electrode current collector (241A) and a negative electrode active material layer (243A) formed on the negative electrode current collector (241A). The negative electrode active material layer (243A) contains a graphite material and a binder. The negative electrode active material layer (243A) has a first region (A1) neighboring the negative electrode current collector (241A), and the first region (A1) contains natural graphite in a weight ratio of equal to or greater than 80% of the graphite material. The negative electrode active material layer (243A) has a second region (A2) neighboring a surface thereof, and the second region (A2) contains artificial graphite in a weight ratio of equal to or greater than 80% of the graphite material.

Abstract: A battery has an anode, a separator adjacent the anode, and a cathode adjacent the separator opposite the anode, the cathode comprising interdigitated stripes of materials, one of the materials forming a pore channel.

Abstract: A multilayer conductive film includes a layer 1 including a conductive material containing a polymer material 1 having an alicyclic structure and conductive particles 1 and a layer 2 including a material having durability against positive electrode potential. The multilayer conductive film has stability in an equilibrium potential environment in a negative electrode and stability in an equilibrium potential environment in a positive electrode, has low electric resistance per unit area in the thickness direction, and has excellent barrier properties for a solvent of an electrolytic solution. A battery including a current collector employing the multilayer conductive film can achieve both weight reduction and durability.

Abstract: In one embodiment, a positive electrode is formed by a process that includes forming a slurry including particles dispersed within a liquid from a electrode formulation and the liquid such that the particles have a particle size distribution D50 of 15 microns or less, coating the slurry on a collector; and drying the coated collector to form the positive electrode. The electrode formulation includes an electrode active material, a conductive carbon source, an organic polymeric binder, and a water-soluble polymer. The liquid consists essentially of water or a mixture of water and an alcohol. When the liquid consists essentially of the mixture, the alcohol is present in an amount of less than 10% by weight, based on the weight of the slurry. When the liquid consists essentially of water, the slurry is formed from the electrode formulation, the liquid, and an arene-capped polyoxoethylene surfactant.

Abstract: An electrode assembly and a secondary battery including the electrode assembly are disclosed. The electrode assembly includes a first electrode, a second electrode, and a separator disposed between the first and second electrodes. A film is disposed on at least one edge of at least one of the first and second electrodes.

Abstract: Provided is a method of manufacturing a battery having an electrode module including: a positive plate having a cathode collector portion formed by attaching a lead member to a cathode substrate made of a foamed metal plate; and a cathode collector plate welded to the cathode collector portion. The method includes: a pre-welding positive plate forming process of forming a pre-welding positive plate, which is the positive plate before welding, such that the pre-welding positive plate has a projection projecting from a pre-welding cathode collector portion, which is the cathode collector portion before welding; and a welding process of melting a pre-welding cathode collector plate to weld it to the projection. In the pre-welding positive plate forming process, the projection is formed into such a shape that the condition that S?1.3W is satisfied, where W and S represent the width and the circumferential length of the projection, respectively.

Abstract: A rechargeable battery 100 includes a plurality of electrode assemblies 10; a case 34 housing the electrode assemblies 10; at least one electrode terminal 21, 22, electrically connected to the electrode assemblies 10 by a lead tab 40, 50, the lead tab 50 including a terminal junction part 51; and a prong portion extending from the terminal junction plate, the prong portion comprising a plurality of prongs 53, 54, each of the prongs having a main body 53a electrically connected to one of the electrode assemblies 10 and an angled body 53b bent at one angle from the main body 53a.

Abstract: An electrode assembly and a secondary battery having the same are disclosed. The electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator. The positive electrode plate includes a positive electrode active material and a positive electrode tab. The negative electrode plate includes a negative electrode active material and a negative electrode tab. The separator is disposed between the positive electrode plate and the negative electrode plate.

Abstract: A mechanism is presented for shielding a cathode in a metal cyanometallate battery. A battery is provided with an anode, a cathode, an electrolyte, and an ion-permeable membrane separating the anode from the cathode. The cathode is made up of a plurality of metal cyanometallate layers overlying the current collector. At least one of the metal cyanometallate layers is an active layer formed from an active material AXM1YM2Z(CN)N.MH2O, where “A” is an alkali metal, alkaline earth metal, or combination thereof. At least one of the metal cyanometallate layers is a shield layer comprising less than 50 percent by weight (wt %) active material. In response to applying an external voltage potential between the cathode and the anode, the method charges the battery. Upon discharge, the shield layer blocks metal particles from contacting active layers. Simultaneously, the shield layer transports metal ions from the electrolyte to the active layers.

Abstract: Provided are an anode active material including silicon oxide particles (SiOx, where x satisfies 0<x<2), fiber-type carbon grown on the silicon oxide particles, and a carbon coating layer formed on surfaces of the silicon oxide particles and the fiber-type carbon, and a method of preparing the anode active material. Since the anode active material of the present invention is used in an anode of a lithium secondary battery, conductivity may not only be improved but the physical bonding force between the silicon oxide particles and the fiber-type carbon may also be increased. Thus, the performance of the battery may be improved by addressing limitations related to the exfoliation of the fiber-type carbon which may occur due to the volume change of silicon oxide.

Abstract: A lithium ion battery and an electrode structure thereof are provided. The electrode structure at least includes a current collecting substrate, an electrode active material layer on the current collecting substrate, and a complex thermo-sensitive coating layer sandwiched in between the current collecting substrate and the electrode active material layer. The complex thermo-sensitive coating layer at least contains two or more of PTC (positive temperature coefficient) materials so as to have adjustable stepped resistivity according to temperature rise.

Abstract: Composite particles for electrochemical device electrode containing an electrode active material and a particle-shaped binder, wherein said binder includes a copolymer which contains a nitrile group-containing monomer unit, a monomer unit which has an acidic functional group, and a monomer unit which contains a C4 or more linear alkylene structure, in which a ratio of content of said nitrile group-containing monomer unit is 10 to 50 wt % and the iodine value is 3 to 40 mg/100 mg are provided.

Abstract: A negative-electrode terminal for a cell in which separation between a first metal layer and a second metal layer hardly takes place is provided by suppressing excess formation of an intermetallic compound on a bond interface between the first metal layer and the second metal layer. This negative-electrode terminal for a cell includes a clad portion formed by bonding a first metal layer made of Al or an Al alloy and a second metal layer containing Ni and Cu and consisting of one or a plurality of layers to each other. The first metal layer includes a connected region connected with a cell terminal connecting plate and a stacked region adjacent to the connected region on the side of the same surface, while the second metal layer is bonded to the first metal layer in the stacked region and configured to be connectable to cell negative electrodes of cells.

Abstract: The invention relates to a device for fitting and equipping motor vehicle battery housings as a compact system, which comprises individual production stations and associated transport devices, wherein the battery plate packs to be processed are arranged in clamping cassettes and are provided to the device in the necessary pack width for the intended battery cells by a feeding station arranged upstream.

Abstract: According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.

Abstract: A negative electrode sheet of a lithium-ion secondary battery has a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer contains flake graphite particles and has a first region neighboring the negative electrode current collector and a second region neighboring a surface side that are different in perpendicularity of the graphite particles. The perpendicularity of the graphite particles is defined as (m1/m2), where, when the inclination ?n of each of the graphite particles is specified relative to a surface of the negative electrode current collector, m1 is the number of the graphite particles having an inclination ?n of 60°??n?90° and m2 is the number of the graphite particles having an inclination ?n of 0°??n?30°.

Abstract: According to one embodiment, there is provided an electrode. The electrode includes an active material-containing layer and a current collector. The current collector includes first and second regions. The first region has a surface roughness Ra1. The second region has a surface roughness of Ra2. The active material-containing layer is supported by the second region. The surface roughness Ra1 of the first region is smaller than the surface roughness of Ra2 of the second region.

Abstract: The present invention relates to a method for preparing an anode active material, comprising (S1) forming a shell being a coating layer comprising a carbon material on the surface of a core comprising silicon oxide particles, to obtain a silicon oxide-carbon composite having a core-shell structure; (S2) mixing the silicon oxide-carbon composite with an oxygen-containing lithium salt, followed by heat treatment to produce a silicon oxide-lithium alloy, thereby obtaining a (SiOx-Liy)—C (0<x<1.5, 0<y<4) composite having a core-shell structure; and (S3) washing the surface of the (SiOx-Liy)—C composite having a core-shell structure and drying the composite, and an anode active material prepared by the method.

Abstract: Electrodes and methods of forming electrodes are described herein. The electrode can be an electrode of an electrochemical cell or battery. The electrode includes a current collector and a film in electrical communication with the current collector. The film may include a carbon phase that holds the film together. The electrode further includes an electrode attachment substance that adheres the film to the current collector.

Abstract: A method for making a composite electrode for a lithium ion battery comprises the steps of: preparing a slurry containing particles of inorganic electrode material(s) suspended in a solvent; preheating a porous metallic substrate; loading the metallic substrate with the slurry; baking the loaded substrate at a first temperature; curing the baked substrate at a second temperature sufficient to form a desired nanocrystalline material within the pores of the substrate; calendaring the cured composite to reduce internal porosity; and, annealing the calendared composite at a third temperature to produce a self-supporting multiphase electrode. Because of the calendaring step, the resulting electrode is self-supporting, has improved current collecting properties, and improved cycling lifetime. Anodes and cathodes made by the process, and batteries using them, are also disclosed.

Abstract: Multilayer structures with alternating graphene and Si thin films were constructed by a repeated process of filtering liquid-phase exfoliated grapheme film and subsequent coating of amorphous Si film using plasma-enhanced chemical vapor deposition (PECVD) method. The multilayer-structure composite films, fabricated on copper current collectors, can be directly used as anodes for rechargeable lithium-ion batteries (LIBs) without the addition of polymer binders or conductive additives. Fabricated coin-type half cells based on the new anode materials easily achieved a capacity almost four times higher than the theoretical value of graphite even after 30 cycles. These cells also demonstrated improved capacity retention and enhanced rate capability during charge/discharge processes compared to those of pure Si film-based anodes.

Abstract: The present invention relates to an anode for a secondary battery, comprising: a wire-type current collector; a metal-based anode active material layer formed on the surface of the wire-type current collector, and comprising a metallic active material; and a graphite-based anode composite layer formed on the surface of the metal-based anode active material layer, and comprising a mixture of a graphite-based active material, a conductive material and a first polymer binder. The anode of the present invention has the metal-based anode active material layer together with the graphite-based anode composite layer acting as a buffer, thereby preventing the metallic active material from being isolated or released even if excessive volume expansion occurs during charging and discharging processes. Also, the graphite-based anode composite layer has good affinity with an organic electrolyte solution to compensate the defect of the metallic active material having low affinity with an organic electrolyte solution.

Abstract: Composite particles for electrochemical device electrode which contain an electrode active material, a non-water soluble particle-shaped polymer, and a water-soluble polymer having a sulfonic acid group are provided. According to the present invention, composite particles for electrochemical device electrode are high in fluidity, exhibit high adhesion with a current collector, and can provide an electrochemical device electrode which is high in initial capacity, low in internal resistance, an excellent in high temperature storage characteristics are provided.

Abstract: An object of the present invention is to provide a current collector which can decrease the internal resistance of a non-aqueous electrolyte battery, be used suitably for a non-aqueous electrolyte battery such as a lithium ion secondary battery and the like or for an electrical storage device such as a lithium ion capacitor and the like, and improve high rate characteristics. According to the present invention, a current collector which is structured by forming a resin layer possessing conductivity on at least one side of a conductive substrate is provided. The resin layer contains a chitosan-based resin and a conductive material, and the water contact angle of the surface of the resin layer measured by ?/2 method in a thermostatic chamber at 23° C. is 5 degrees or more and 60 degrees or less. In addition, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device which use the current collector are provided.

Abstract: Electrodes and methods of forming electrodes are described herein. The electrode can be an electrode of an electrochemical cell or battery. The electrode includes a current collector and a film in electrical communication with the current collector. The film may include a carbon phase that holds the film together. The electrode further includes an electrode attachment substance that adheres the film to the current collector.

Abstract: Provided is a negative electrode having a new structure for realizing a lithium secondary battery having increased charging/discharging capacities and a battery capacity that is reduced less due to repeated charging/discharging. The negative electrode for a lithium secondary battery includes a current collector substrate; a carbon nanochips layer including graphene sheets grown to incline in irregular directions independently from the current collector substrate; and a silicon thin film layer on the carbon nanochips layer, in which gaps among the carbon nanochips are formed between the silicon thin film layer and the current collector substrate. The Raman spectrum of graphite forming the carbon nanochips layer has a g/d ratio of 0.30 to 0.80, both inclusive, and the crystallinity level of the graphite is lower than that of graphite forming carbon nanowalls. The carbon nanochips layer can be formed by a plasma CVD method using a gaseous mixture of methane and hydrogen, for example.

Abstract: In manufacturing of a negative electrode material of a lithium ion secondary battery provided with a negative electrode mixture layer including a negative electrode active substance on a surface of a negative electrode current collector, one or mixture selected from granular materials alloyable with lithium and carbon materials for storing and releasing lithium is used as the negative electrode active substance; manufacturing method of a negative electrode material for a lithium ion secondary battery employed is characterized in that an electro-deposited copper foil in which a surface roughness (Ra) is 0.20 ?m<Ra<0.50 ?m and the surface roughness (Ra) satisfies [0.053×D50(c)] ?m to [0.210×D50(c)] ?m where (D50(c)) is an average particle size of the negative electrode active substance is selectively used as the negative electrode current collector; a silane coupling agent treatment layer is provided on a surface of the electro-deposited copper foil.

Abstract: A negative electrode for a rechargeable lithium battery including a current collector and a negative active material layer positioned on the current collector, wherein the negative active material layer includes a first active material including a carbon-based material, a composite material including a second active material including a silicon-based material or a tin-based material, the second active material being coated with a combined binder and a fiber-shaped conductive material on the surface thereof, and a binder, a rechargeable lithium battery including the same and a method of preparing the same.

Abstract: Ink is manufactured by mixing unoxidized metallic particles to a binder. The ink is printed on an object (502) and hardened for forming a conductor. The process is performed in an inert atmosphere or in vacuum for maintaining the electrical conductivity of the conductor (500).

Abstract: An electrode structure of a lithium ion battery includes a current collector, at least one energy type active layer, and at least one power type active layer. The energy type active layer and the power type active layer are formed on the current collector. The energy type active layer includes a first lithium-containing compound and multiple first conductive particles. The power type active layer includes a second lithium-containing compound and multiple second conductive particles. The first and second lithium-containing compounds are lithium-containing complex transitional metal oxides. Compositions of the first and second lithium-containing compounds include at least one of Ni, Co and Mn. A lithium ion diffusion coefficient of the second lithium-containing compound is greater than that of the first lithium-containing compound. A specific capacity of the first lithium-containing compound is greater than that of the second lithium-containing compound.

Abstract: A current collector for an electrochemical cell includes a member having an outer member and an inner member coupled to the outer member by a plurality of flexible arms configured to allow the inner member to move relative to the outer member.