Abstract: A secondary battery includes a positive electrode, a negative electrode containing a metal compound having a lithium ion absorption potential of 0.2V (vs. Li/Li+) or more, a separator and a nonaqueous electrolyte. The separator is provided between the positive electrode and the negative electrode. The separator comprises cellulose fibers and pores having a specific surface area of 5 to 15 m2/g. The separator has a porosity of 55 to 80%, and a pore diameter distribution having a first peak in a pore diameter range of 0.2 ?m (inclusive) to 2 ?m (exclusive) and a second peak in a pore diameter range of 2 to 30 ?m.

Abstract: An electric storage apparatus has a positive electrode plate, a negative electrode plate, and a separator. Each of the positive electrode plate and the negative electrode plate has a collector plate and an active material layer containing an electrolytic solution, and the active material layer is formed in a predetermined width on a partial region of a collector plate. The separator is placed between the positive electrode plate and the negative electrode plate and contains an electrolytic solution. At least one of the positive electrode plate and the negative electrode plate, an edge of the active material layer in a width direction has a waveform. A set value Wn of the width of the active material layer and a variation ?W of the width of the active material layer satisfy a condition of 0.03??W/Wn?0.056.

Abstract: A nonaqueous electrolyte secondary battery includes an electrode body, a non-aqueous electrolyte and a porous heat resistance layer. The electrode body is provided with a positive electrode and a negative electrode that face each other through a separator. The porous heat resistance layer is disposed at least in one of a space between the positive electrode and the separator and a space between the negative electrode and the separator and contains an inorganic filler. A porosity of the separator is not less than 70% by volume and not more than 80% by volume. A ratio of a porosity of the porous heat resistance layer with respect to the porosity of the separator is not less than 0.3 and not more than 0.6.

Abstract: The present invention provides a composite separator for a polymer electrolyte membrane fuel cell (PEMFC) and a method for manufacturing the same. The inventive method involves allowing graphite foil layers to be brought into direct contact with each other when graphite foils are stacked on both sides of a carbon fiber reinforced composite material prepreg, thereby improving electrical conductivity in the thickness direction of the separator.

Abstract: A fabricating method of a unit structure for accomplishing an electrode assembly formed by a stacking method, and an electrochemical cell including the same are disclosed. The fabricating method of the electrode assembly is characterized with fabricating the unit structure by conducting a first process of laminating and forming a bicell having a first electrode/separator/second electrode/separator/first electrode structure, and conducting a second process of laminating first separator/second electrode/second separator one by one on one of the first electrode among two of the first electrodes.

Abstract: Disclosed is a lithium battery, including a positive electrode plate, a negative electrode plate, and a polyolefin separator disposed therebetween. An organic-inorganic hybrid film disposed between the polyolefin separator and the positive electrode plate, and/or disposed between the polyolefin separator and the negative electrode plate. The organic-inorganic hybrid film includes inorganic oxide particles and a fluorinated polymer binder, wherein the inorganic oxide particles and the fluorinated polymer binder have a weight ratio of about 40:60 to 80:20.

Abstract: A nonaqueous electrolyte secondary battery 100 according to this invention includes a positive electrode 10, a negative electrode 20, a separator 40 interposed between the positive electrode 10 and the negative electrode 20, and a nonaqueous electrolyte solution. A porous heat-resistant layer 42 is additionally provided between the separator 40 and at least one electrode from among the positive electrode 10 and the negative electrode 20. The porous heat-resistant layer 42 includes hollow particles 44 made of an inorganic material, and a binder 46.

Abstract: An electrode which has a Si-containing material layer and a porous film, and a lithium battery employing the same. In the electrode, the Si-containing material layer is applied on an electrode current collector and/or an electrode active material to protect the surface of the electrode current collector from oxidation. Also, the applied Si-containing material layer enhances the adhesion between the electrode current collector and the electrode active material to improve cycle life characteristics. Also, it increases the adhesion between the electrode active material and the porous film to reduce resistance, and to improve ohmic contacts and to lower the Shottkey barrier. In addition, the electrode includes the porous film functioning as a separator, and thus can provide a battery which is safe under conditions of overcharge and heat exposure without needing an additional separator.

Abstract: A battery system comprises a plurality of substantially planar layers extending over transverse areas. The plurality of layers comprises at least one cathode layer, at least one anode layer, and at least one separator layer therebetween.

Abstract: Subject-matter of the invention is a separator for a lithium ion battery which separates the positive and the negative electrode of the lithium ion battery from one another and which is permeable to lithium ions, characterized in that the separator comprises at least one silica, preferably in the form of a xerogel, and at least one carbon component, as well as a lithium ion battery containing said separator.

Abstract: A negative electrode for rechargeable lithium batteries includes a current collector, a porous active material layer having a metal-based active material disposed on the current collector, and a high-strength binder layer on the porous active material layer. The high-strength binder layer has a strength ranging from 5 to 70 MPa. The negative active material for a rechargeable lithium battery according to the present invention can improve cycle-life characteristics by suppressing volume expansion and reactions of an electrolyte at the electrode surface.

Abstract: Printed electronics are increasingly becoming an important industry, thus innovations to integrate the various components and processes would be very useful to expand this industry. Disclosed are innovational concepts that would be very useful to accelerate this industry. Webs of printed electronics, antennas, power sources (cells/batteries), and assembly substrates can be merged together to form a completed electronic assembly that could be, for example, in label form or in a stand alone electronic device.

Abstract: Disclosed is a battery including a cathode in which cathode active-material coating layers provided on both surfaces of a cathode collector are longitudinally deviated from each other, and an anode having at least one anode active-material coating layer provided on an anode collector, the cathode and anode being wound to face each other with a separator interposed therebetween. At least one of a winding beginning portion and winding ending portion of the cathode is provided with a cathode uncoated part for installation of a cathode lead. An insulator tape is attached to the boundary of the cathode active-material coating layer at a position where the anode active-material coating layer faces a non-coating part of the cathode not containing the cathode active-material coating layer, achieving enhanced electrical insulation capability and consequential safety of the battery.

Abstract: Disclosed is a rechargeable lithium battery, including an electrode assembly including a positive electrode, a separator, and a negative electrode; and an electrode tape adhered to an outer surface of the electrode assembly, the electrode tape including a thermosetting resin selected from polyvinylchloride, a mixture of nitrile rubber and phenol resin, epoxy resin, polyurethane, melamine resin, urea resin, or combination thereof.

Abstract: An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention.

Abstract: An insulating (nonconductive) microporous polymeric battery separator comprised of a single layer of enmeshed microfibers and nanofibers is provided. Such a separator accords the ability to attune the porosity and pore size to any desired level through a single nonwoven fabric. Through a proper selection of materials as well as production processes, the resultant battery separator exhibits isotropic strengths, low shrinkage, high wettability levels, and pore sizes related directly to layer thickness. The overall production method is highly efficient and yields a combination of polymeric nanofibers within a polymeric microfiber matrix and/or onto such a substrate through high shear processing that is cost effective as well. The separator, a battery including such a separator, the method of manufacturing such a separator, and the method of utilizing such a separator within a battery device, are all encompassed within this invention.

Abstract: Disclosed herein is an electrode assembly including two or more electrode plates, each of which has electrode tabs, and a separator plate disposed between the electrode plates and/or a one-unit separation sheet disposed between the electrode plates to cover side surfaces of the electrode plates, which constitute an electrode tab non-formation region, wherein the electrode plates are stacked in a height direction on the basis of a plane such that the electrode plates having opposite polarities face each other in a state in which the separator plate and/or the separation sheet is disposed between the electrode plates, a stack constituted by the electrode plates includes electrode plates having different sizes, and an absolute value of the difference in thickness between the electrode plates having different sizes facing each other is 0 to 79 ?m.

Abstract: Provided is a stack-type cell for a secondary battery including a stack of first electrode/separator/second electrode/separator/first electrode arranged in order, and an outer separator stacked on each of the first electrodes. Also, the present invention provides an electrode assembly for a secondary battery using the stack-type cell and a manufacturing method thereof.

Abstract: Disclosed are multilayer, porous, thin-layered lithium-ion batteries that include an inorganic separator as a thin layer that is chemically bonded to surfaces of positive and negative electrode layers. Thus, in such disclosed lithium-ion batteries, the electrodes and separator are made to form non-discrete (i.e., integral) thin layers. Also disclosed are methods of fabricating integrally connected, thin, multilayer lithium batteries including lithium-ion and lithium/air batteries.

Abstract: In a sealed battery, a metal current carrying block 24A having a protrusion 24b on each of the two opposing faces is placed between positive or negative electrode substrate exposed portions that are divided into two so as to bring the protrusion 24b on each of the two opposing faces into contact with the positive or negative electrode substrate exposed portions that are stacked, a pair of electrodes 31 and 32 for resistance welding are brought into contact with positive electrode collector members 16 or negative electrode collector members that are each placed on the outermost surfaces of the positive electrode substrate exposed portions 14 or negative electrode substrate exposed portions, and resistance welding is performed with pressure applied between the pair of electrodes 31 and 32 for resistance welding.

Abstract: Printed electronics are increasingly becoming an important industry, thus innovations to integrate the various components and processes would be very useful to expand this industry. Disclosed are innovational concepts that would be very useful to accelerate this industry. Webs of printed electronics, antennas, power sources (cells/batteries), and assembly substrates can be merged together to form a completed electronic assembly that could be, for example, in label form or in a stand alone electronic device.

Abstract: There are provided an electrode assembly, and a battery cell, a battery pack, and a device. The electrode assembly includes a combination of two or more types of electrode units having different areas, wherein the electrode units are stacked such that steps are formed, and electrode units are formed such that a positive electrode and a negative electrode face one another at an interface between the electrode units.

Abstract: A battery including a battery case, an electrode assembly in the battery case, the electrode assembly including a plurality of windings that are wound about a winding axis, the winding axis being oriented parallel to a bottom surface of the battery case, and a deformable member between the electrode assembly and the bottom surface of the battery case, the deformable member being pressed between the electrode assembly and the bottom surface of the battery case.

Abstract: Nickel zinc cylindrical battery cell designs are described. The designs provided limit dendrite formation and prevent build up of hydrogen gas in the cell. The present invention also provides low-impedance cells required by rapid discharge applications. The cylindrical battery cells may have polarity opposite of that of conventional power cells, with a negative cap and positive can. The cylindrical cells may include a gel electrolyte reservoir.

Abstract: The present invention relates to an electrode assembly of a porous structure and a secondary battery including the same. In an electrode assembly including a plurality of anodes, cathodes, and separators, the present invention provides a secondary battery including an electrode assembly including one or more through holes, and a passing sealing portion supplementarily sealed on positions corresponding to the through holes. The secondary battery according to the present invention may prevent the inner short and increase safety by including the fused portion of an electrode assembly and a battery case, stably fixing them, and holding back the movement of the electrode assembly. In addition, the present invention has an effect of being capable of greatly enhancing impregnation on electrolyte since the electrode assembly has a porous structure.

Abstract: Provided is a separator for nonaqueous electrolyte electricity storage devices that includes an improved porous epoxy resin membrane. In the separator for nonaqueous electrolyte electricity storage devices, a ratio I/Io between a peak intensity Io of an absorption peak present at 1240 cm?1 in an infrared absorption spectrum of the porous epoxy resin membrane and a peak intensity I of an absorption peak present at 1240 cm?1 in an infrared absorption spectrum of the porous epoxy resin membrane having been subjected to an acetic anhydride treatment is 1.0 or more and 2.4 or less. The amount of active hydroxyl groups present in the porous epoxy resin membrane can be evaluated by the value of the ratio I/Io.

Abstract: There is provided with a molten-salt battery which can prevent relative positional displacement between a positive electrode or a negative electrode and a separator. Both faces of the negative electrodes are covered with the separators which are formed to bend along a lower end part of the respective positive electrodes. The separators respectively have a V-shaped or U-shaped cross section, a bent part is formed to have a valley-like (groove-like) shape, and the respective bent parts are disposed along a lower side of the positive electrodes. The positive electrodes having both faces covered with the respective separators as described above and the negative electrodes are laminated alternately. The dimension of the separators after being bent is made larger than that of the positive electrodes and the negative electrodes by 1 to 10%.

Abstract: The present invention relates to a method of manufacturing an electrode assembly, the method including: preparing an electrode laminate including at least one negative electrode, at least one positive electrode, and at least one separation film; generating a separation film assembly by bonding remaining portions of the separation film positioned in regions not corresponding to shapes of the negative electrode and the positive electrode; and cutting the separation film assembly so as to correspond to the shapes of the negative electrode and the positive electrode, and an electrode assembly manufactured by the method.

Abstract: Electrodes with a multilayer or monolayer composite separator are described. The multilayer composite separator comprises multiple individual composite separator layers. Each individual composite separator layer comprises inorganic particulate material(s) and organic polymer(s) with different inorganic particulate material/polymer weight ratios. The multilayer composite separator layer is constructed in a way such that the composite separator layer adjacent to the electrode active material contains a higher weight percentage of the inorganic particulate material and lower weight percentage of the organic polymer than the composite separator layer outermost from the electrode current collector. Laminated cells comprising a positive electrode, a negative electrode, a laminated multilayer or monolayer composite separator layer are described, wherein at least one of the electrodes has a multilayer or monolayer composite separator disposed onto the surface of the electrode.

Abstract: Embodiments of solid-state batteries, battery components, and related construction methods are described. The components include one or more embodiments of a low melt temperature electrolyte bonded solid-state rechargeable battery electrode and one or more embodiments of a composite separator having a low melt temperature electrolyte component. Embodiments of methods for fabrication of solid-state batteries and battery components are described. These methods include co-extrusion, hot pressing and roll casting.

Abstract: Protected anode architectures for active metal anodes have a polymer adhesive seal that provides a hermetic enclosure for the active metal of the protected anode inside an anode compartment. The compartment is substantially impervious to ambient moisture and battery components such as catholyte (electrolyte about the cathode), and prevents volatile components of the protected anode, such as anolyte (electrolyte about the anode), from escaping. The architecture is formed by joining the protected anode to an anode container. The polymer adhesive seals provide a hermetic seal at the joint between a surface of the protected anode and the container.

Abstract: A capacitor includes a first collector made of metal foil, a first electrode layer placed on a surface of the first collector and mainly containing a carbonaceous material, a resin layer provided on the first electrode layer, a second electrode provided on the resin layer and mainly containing a carbonaceous material, a second collector provided on the second electrode layer and made of metal foil, a case accommodating the first collector, the first electrode layer, the resin layer, the second electrode, and the second collector therein, and an electrolyte accommodated in the case. The resin layer has a non-woven fabric form of fibers made of resin irregularly bonded to one another. The fibers of the resin layer intertwine with the first electrode layer. The fibers of the resin layer intertwine with the first electrode layer. This capacitor can be thin and small.

Abstract: A lithium-ion secondary battery of this invention comprises a separator interposed between a positive electrode and a negative electrode. Moreover, a porous film of lithium titanate is formed on the surface of the negative electrode. In this lithium-ion secondary battery, when the separator is ruptured, short-circuiting of the positive electrode and negative electrode is suppressed by the lithium titanate porous film formed on the surface of the negative electrode. Further, in this configuration, a decline in the characteristics of storage of lithium ions in the negative electrode at low temperatures (low-temperature input characteristics) is suppressed.

Abstract: Disclosed is an integrated electrode assembly having a structure in which a cathode, an anode, and a separation layer disposed between the cathode and the anode are integrated with one another, wherein the separation layer has a multilayer structure including at least one two-phase electrolyte including a liquid phase component and a polymer matrix and at least one three-phase electrolyte including a liquid phase component, a solid component, and a polymer matrix, wherein the polymer matrices of the separation layer are coupled to the cathode or the anode and the liquid phase components of the separation layer are partially introduced into an electrode in a process of manufacturing the electrode assembly.

Abstract: Provided is an electric storage device provided with: a positive electrode including a positive electrode substrate and a positive electrode mixture layer, the positive electrode mixture layer being formed on the positive electrode substrate and containing a positive electrode active material; a negative electrode including a negative electrode substrate and a negative electrode mixture layer, the negative electrode mixture layer being formed on the negative electrode substrate and containing a negative electrode active material; and a separator disposed between the positive electrode and the negative electrode. In the electric storage device, the separator yields a triple value of standard deviation of local air resistance, as measured within a 5-mm diameter circle, of at least 20 seconds/10 cc but not more than 350 seconds/10 cc.

Abstract: Embodiments of the invention describe energy storage devices, porous electrodes, and methods of formation. In an embodiment, an energy storage device includes a porous structure containing multiple main channels that extend into an electrically conductive structure at an acute angle. In an embodiment, an energy storage device includes a porous structure containing an array of V-groove or pyramid recesses.

Abstract: A separator of a molten salt battery made of a porous resin sheet. The separator is improved in wettability to a molten salt by giving hydrophilicity to the resin sheet. In the case of a fluororesin sheet, the sheet is impregnated with water, and irradiated with ultraviolet rays so that C—F bonds in the fluororesin are cleaved and the resultant reacts with water to generate hydrophilic groups, such as OH groups, in each surface layer thereof. The separator gains hydrophilicity through the hydrophilic groups. The separator made of the resin can be made into a bag form. In a molten salt battery having the bag-form separator, the growth of a dendrite is prevented.

Abstract: There is provide an electrode assembly including an electrode laminate having a plurality of electrode units rolled up to be stacked on one another in at least two rectangularly shaped separation films, the electrode assembly being characterized in that at least one of two rectangularly shaped separation films is disposed on upper and lower surfaces of the respective electrode unit, at least one separation film disposed on one surface being different from a separation film disposed on another surface, and the electrode laminate includes at least one step formed by stacking an electrode unit having a difference in area from an electrode unit adjacent thereto, having one of the rectangularly shaped separation films as a boundary therebetween.

Abstract: Provided is a nonaqueous electrolyte secondary cell including: a case; an element housed in the case, including at least a positive electrode member, a negative electrode member and a separator; and an electrolyte solution poured into the case, wherein when in the state of the case being installed, in the direction perpendicular to the liquid surface of the electrolyte solution, the length between the highest position and the lowest position of the element is represented by L1 and the length between the liquid surface and the lowest position of the element is represented by L2, the ratio calculated with the formula L2/L1×100 is 10% or more and 100% or less.

Abstract: Provided is a non-aqueous electrolyte secondary battery which has excellent high-temperature cycle characteristics, while maintaining the shutdown response speed of the separator and the overcharge characteristics after many repeated cycles at high temperatures. The battery uses a non-aqueous electrolyte containing a carboxylic acid ester and a nitrile compound, and a separator having a porosity of 28 to 54% and an air permeability of 86 to 450 secs/dl.

Abstract: Provided is a porous polypropylene film having both air permeability properties and puncture strength. A porous polypropylene film which has an air permeability of 700 seconds/100 ml or less and a puncture strength of 1.5 N or greater, and has ? activity can be obtained when the porous polypropylene film is made to have a tensile strength in the machine direction of the film, EMD, of 100 MPa or greater, a tensile strength in the transverse direction to the machine direction, ETD, of less than 100 MPa, and a ratio of EMD and ETD, EMD/ETD, of 1.5 to 10.

Abstract: Electrochemical cells, and more specifically, release systems for the fabrication of electrochemical cells are described. In particular, release layer arrangements, assemblies, methods and compositions that facilitate the fabrication of electrochemical cell components, such as electrodes, are presented. In some embodiments, methods of fabricating an electrode involve the use of a release layer to separate portions of the electrode from a carrier substrate on which the electrode was fabricated. For example, an intermediate electrode assembly may include, in sequence, an electroactive material layer, a current collector layer, a release layer, and a carrier substrate. The carrier substrate can facilitate handling of the electrode during fabrication and/or assembly, but may be released from the electrode prior to commercial use.

Abstract: A separator for a rechargeable lithium battery including a tungsten-doped vanadium oxide (VO2) phase transition material and the rechargeable lithium battery including the separator. Here, an explosion possibility of the rechargeable lithium battery including the separator may be prevented and delayed when the battery is excessively heated.

Abstract: A secondary-battery current collector comprising an aluminum foil and a film containing an ion-permeable compound and carbon fine particles formed thereon or a secondary-battery current collector comprising an aluminum foil, a film containing an ion-permeable compound and carbon fine particles formed thereon as the lower layer, and a film containing a binder, carbon fine particles and a cathodic electroactive material formed thereon as the upper layer, a production method of the same, and a secondary battery having the current collector are provided.

Abstract: A rechargeable battery and its fabrication method prevents electrical shorts between the electrode plates by decreasing shrinkage of the separator, the battery includes: an electrode assembly including: a wound electrode jelly roll having a first electrode plate with a first electrode tab attached thereto, a second electrode plate with a second electrode tab attached thereto and a separator interposed between the first electrode plate and the second electrode plate, and an upper tape arranged to surround an upper end of the electrode jelly roll where the first electrode tab and second electrode tab extend outward therefrom; a case having an upper end opening arranged to receive the electrode assembly and an electrolyte; and a cap assembly arranged to seal the upper end opening of the case after the electrode assembly has been received in the case; the upper tape is attached to the upper end of the electrode jelly roll and surrounds the separator adjacent to an end of an innermost electrode plate of the first

Abstract: An alkali-chalcogen cell, in particular a lithium-sulfur cell. In order to increase the long-term stability and lifespan of the alkali-chalcogen cell, the separator of the alkali-chalcogen cell is provided with a polymer-ionophore component, in particular a polymer-ionophore diaphragm, including a polymeric matrix material and alkali-ionophores, in particular lithium ionophores.

Abstract: Disclosed is a separator having surface energy of about 45 mN to about 50 mN/m which can be prepared by radiating plasma on a polymer film under a current of from about 1800 mA to about 2000 mA and electric power of from about 2750 W to about 3000 W. Further disclosed is a rechargeable battery comprising the separator having a surface energy of about 45 mN to about 50 mN/m.

Abstract: There is provided an electrode assembly having steps including: a first electrode stair including at least one first electrode unit; and a second electrode stair including at least one second electrode unit having an area different from that of the first electrode unit, wherein the first electrode stair and the second electrode stair are stacked to be adjacent, separated by at least one separator as a boundary therebetween and including one or more electrode laminates having steps formed by a difference between areas of the first electrode stair and the second electrode stair, and shapes of the corners of the first electrode stair and the second electrode stair having steps are different. There is also provided a secondary battery including the electrode assembly. Secondary batteries having various designs without restriction in shapes of corners of electrode units can be provided.

Abstract: Non-aqueous alkali metal (e.g., Li)/oxygen battery cells constructed with a protected anode that minimizes anode degradation and maximizes cathode performance by enabling the use of cathode performance enhancing solvents in the catholyte have negligible self-discharge and high deliverable capacity. In particular, protected lithium-oxygen batteries with non-aqueous catholytes have this improved performance.

Abstract: A separator for a battery having a porous base material layer and a polymer coating layer formed on at least a surface of the base material layer. The polymer coating layer includes a first fluorinated copolymer and a non-fluorinated polymer. A weight ratio of the first fluorinated copolymer to the non-fluorinated polymer is in a range of 3:1 to 1:3.