Abstract: There is provided a stepped electrode assembly including: a first electrode stack including at least one first unit cell, the first unit cell including at least one positive electrode and at least one negative electrode having the same area and being alternately stacked in a vertical direction with a separator disposed therebetween; and a second unit cell including at least one positive electrode and at least one negative electrode that are alternately stacked in the vertical direction with a separator disposed therebetween, the second unit cell disposed on a side of the first electrode stack with a separator disposed therebetween, wherein the second unit cell includes a first area electrode having the same area as an electrode area of the first electrode stack and a second area electrode having an area different from the area of the first area electrode, wherein the second unit cell is a stepped unit cell including a stepped portion formed by an area difference between the first and second area electrodes.

Abstract: A Lithium-ion secondary battery (100A) has a negative electrode current collector (241A) and a negative electrode active material layer (243A) coated on the negative electrode current collector (241A). The negative electrode active material layer (243A) contains negative electrode active material particles (710A). The negative electrode active material particles (710A) include graphite particles each at least partially covered by an amorphous carbon film (750). The weight ratio X of the amorphous carbon film (750) in the negative electrode active material particles (710A) is 0.02?X?0.06. The negative electrode active material particles (710A) have a linseed oil absorption number Y (mL/100 g) of 35 (mL/100 g)?Y?70 (mL/100 g).

Abstract: A sub-assembly for an electrochemical stack, such as a PEM fuel cell stack, has a bipolar plate with sealing material extending from its upper face, around the edge of the bipolar plate, and onto its lower face. The bipolar plate is preferably a combination of an anode plate and a cathode plate defining an internal coolant flow field and bonded together by sealing material which also provides a seal around the coolant flow field. All of the sealing material in the sub-assembly may be one contiguous mass. To make the sub-assembly, anode and cathode plates are loaded into a mold. Liquid sealing material is injected into the mold and fills a gap between the edge of the plates, and portions of the outer faces of the plates, and the mold. In a stack, sub-assemblies are separated by MEAs which at least partially overlap the sealing material on their faces.

Abstract: A battery cell for an electronic device, and an electronic device, the battery cell including an electrode assembly; an outer case accommodating the electrode assembly, the outer case including first and second outer cases that contact each other along edges thereof, wherein the first and second outer cases include a body portion that includes a space for accommodating the electrode assembly therein, and a wing portion on at least a part of an outer circumference of the body portion, the wing portion including at least one through-hole therein; an insulating film is folded along a length direction of the wing portion to surround the wing portion, the insulating film including a hole at a position overlying the at least one through-hole of the wing portion; and a plate-shaped ring-type insulating member around a circumference of the at least one through-hole.

Abstract: A rolling device for a secondary battery includes a mandrel to roll a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate, the mandrel having a pair of clamps at a center of the mandrel, a blade surrounding the clamps while being spaced apart from the clamps, the blade having an elliptical cross-section and being divided into four sections, the first electrode plate, second electrode plate, and separator being rolled on the blade, and a rotating body coupled to an interior side of the blade, the rotating body being between the clamps and the blade.

Abstract: An electrochemical cell comprising an electrode assembly having a plurality of cathodes in which the plurality of cathodes is electrically connected together at a connection tab junction is disclosed. The junction preferably comprises a plurality of cathode connection tabs that are folded over each other to construct a junction that is mechanically and electrically robust. The junction is comprised of a plurality of connection tabs that each extend from a cathode. Each of the respective tabs is folded over each other to form a compact electrode junction having redundant connections. An elongated lead extends from the junction to provide an electrical connection to the plurality of cathodes. The junction is welded together such as by a laser, resistance or ultrasonic weld joint. The cathode junction is suitable for either primary or secondary cells, particularly those powering implantable biomedical devices.

Abstract: An electrode has a current collector and an electrode mixture containing a binder and an active material particle selected from at least one of a carbonaceous material, a metal particle and a metal oxide particle formed on the current collector. When cutting strength of an interface between the current collector and the electrode mixture is represented by “a” and cutting strength in a horizontal direction within the electrode mixture is represented by “b”, the “a” and “b” satisfy a relation of a/b>1.

Abstract: An electrode and electrode assembly, for example for use as an anode in a lithium-ion rechargeable cell that uses silicon or silicon-based elements of specific dimensions and geometry as its active material, is provided, as well as methods for manufacturing the same. The active silicon or silicon-based material may include fibers, sheets, flakes, tubes or ribbons, for example.

Abstract: There is provided an electrode assembly having increased degrees of structural freedom in the thickness direction thereof. The electrode assembly includes negative and positive electrodes alternately stacked with separators interposed therebetween, wherein the electrode assembly is formed by stacking N electrode stacks where N is a natural number equal to or greater than 2, each of the electrode stacks comprises electrodes having the same area and stacked with separators interposed therebetween, and neighboring electrode stacks of the electrode stacks have different electrode areas, wherein a first electrode stack of the electrode stacks is formed by stacking unit cells respectively including an odd number of electrodes, and the other electrode stacks stacked on the first electrode are formed by stacking unit cells respectively including an even number of electrodes.

Abstract: A device for winding an electrode plate includes a feed roller configured to guide a first electrode plate or a second electrode plate, each of the first electrode plate and the second electrode plate including a plurality of electrode tabs protruding from one side, a deformation reducing member spaced apart from an outer circumferential surface of one end of the feed roller and configured to guide the electrode tabs fed to the feed roller to be brought into close contact with the outer circumferential surface of the one end of the feed roller to reduce deformation of the electrode tabs, and a winding unit configured to wind together the first electrode plate or the second electrode plate transferred by the feed roller and a separator interposed between the first electrode plate and the second electrode plate.

Abstract: A method for producing an electrochemical bundle of a lithium battery, such as an Li-ion battery, with a view to electrically connecting same to the output terminals of the battery, wherein it includes the combination of two steps of folding an electrochemical bundle of a lithium battery which are carried out separately, i.e. a radial folding with plastic deformation and an axial compacting, which make it possible to obtain two separate areas on at least one, and preferably both, of the lateral ends of the bundle. The invention also concerns a method for producing an electrical connection part between the electrochemical bundle and one of the output terminals of the battery, and an associated current collector.

Abstract: To provide a sheet-like power storage device which can be curved or bent in at least one axis direction. A power storage device includes a power storage element including a plurality of flexible sheet-like positive electrodes each having one end portion fixed to a positive electrode tab; a plurality of flexible sheet-like negative electrodes each having one end portion fixed to a negative electrode tab; and a plurality of flexible sheet-like separators. The positive electrodes and the negative electrodes are alternately stacked so as to overlap with each other with the separator interposed therebetween. The power storage element is sealed in a flexible exterior body.

Abstract: A flexible secondary battery includes an electrode stack assembly including a first electrode layer, a second electrode layer, and a separator between the first and second electrode layers; wherein the electrode stack assembly has a first end portion and a second end portion located opposite to the first end portion; and a fixing member fixing the first electrode layer, the separator, and the second electrode layer together; wherein the electrode stack assembly includes a fixing member region in which the fixing member is formed, the fixing member region being located between the first and second end portions of the electrode stack assembly in a first direction, and wherein the first electrode layer, the separator, and the second electrode layer are flexible at both sides of the fixing member.

Abstract: A secondary battery includes an electrode assembly including a first non-coating portion and a second non-coating portion, a first current collector and a second current collector joined to the first non-coating portion and the second non-coating portion, respectively, a case that accommodates the electrode assembly, and a cap assembly that seals the case. The first current collector includes a first overlapping portion that overlaps and joins the first non-coating portion, the first overlapping portion having a length and a width, and the first non-coating portion having a length and a width. The length of the first overlapping portion is 30% to 70% of the length of the first non-coating portion, and the width of the first overlapping portion is 50% to 70% of the width of the first non-coating portion.

Abstract: An electrode assembly and a rechargeable battery having electrode tab are disclosed. In one aspect, the electrode assembly includes a first electrode and a second electrode which are wound with a separator placed therebetween The first electrode includes a first coated portion coated with an active material and a plurality of first electrode tabs T1?Tn protruding outwardly from the first coated portion, wherein n is a natural number greater than 1. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1?Tn are respectively formed, wherein the first and nth portions of the first electrode respectively define the innermost and outermost portions thereof. Each of the first electrode tabs T1?Tn includes at least one tab, and wherein the number of the first electrode tab Tn is different from the number of each of the first electrode tabs T1?Tn?1.

Abstract: Disclosed is a method of manufacturing a secondary battery, built in a battery case, having an electrode assembly impregnated with an electrolyte solution, the method including: (a) injecting an electrolyte solution as a target into a chamber equipped with a vibrating probe; (b) impregnating by soaking an electrode assembly, which has a separator interposed between a cathode and an anode, in an electrolyte solution contained in the chamber; (c) applying vibration at a frequency of 20 to 100 kHz of to the electrolyte solution with the vibrating probe; and (d) moving the electrode assembly with the electrolyte solution into a battery case, whereby interfacial wetting of the electrode assembly and the electrolyte solution is improved. A secondary battery manufactured according to the method may have improved electrolyte solution impregnation properties, ionic conductivity, electronic conductivity and the like and, as such, may have improved electrochemical performance.

Abstract: The present invention provides a battery module, comprising a battery cell and a current collector sheet, the battery cell is provided with a positive electrode tab and a negative electrode tab, the positive electrode tab and the negative electrode tab are located at the opposite ends of the battery cell, the adjacent battery cells form a Z-type arrangement through the current collector sheet by putting the tabs in series, the said positive electrode tab of the battery cell is an aluminum foil tab or a copper foil tab, the negative electrode tab is a copper foil tab or an aluminum foil tab, and the material of the positive electrode tab and that of the negative electrode tab are not the same, the said current collector sheet is a combined current collector sheet, the current collector sheet is combined by an aluminum sheet and a copper sheet.

Abstract: A positive-electrode belt-shaped sheet is cut while the positive-electrode belt-shaped sheet and a negative-electrode belt-shaped sheet are continuously sent, a cut positive-electrode sheet laminated on the uncut negative-electrode belt-shaped sheet via a separator layer is sent and clamped, the uncut negative-electrode belt-shaped sheet is cut at a cutting gap between the positive-electrode sheets laminated thereon, so as to form a sheet unit including the positive-electrode sheet and the negative-electrode sheet, a lamination shape of the sheet unit is measured so as to determine good or bad of the lamination shape, the sheet unit is classified based on a good/bad determination result, and the sheet units determined as good products is collectively laminated and pressed so as to obtain a laminated electrode body. Here, the positive-electrode belt-shaped sheet is cut while the positive-electrode belt-shaped sheet is clamped.

Abstract: Disclosed is a battery comprising a cathode, an anode and an electrolyte; the cathode comprises a cathode material, the cathode material comprises a cathode active material which is capable of reversibly intercalating and deintercalating a first metal ions; the electrolyte comprises at least a solvent capable of dissolving solute, the solute being ionized to a second metal ions that can be reduced to a metallic state during a charge cycle and be oxidized from the metallic state to the second metal ions during a discharge cycle and the first metal ions that can deintercalate from the cathode active material during the charge cycle and intercalate into the cathode active material during the discharge cycle; and the anode and/or the electrolyte further comprise an additive which is a bismuth compound. The gas production amount could be effectively reduced when the battery is being used.

Abstract: Provided is an energy storage device including an electrolyte solution including a compound represented by the general formula (1), a compound represented by the general formula (2), and a compound represented by the general formula (3):

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, conducting a second process of laminating a first separator on one of the first electrode among two of the first electrodes, and conducting a third process of laminating second separator/second electrode one by one on the other first electrode among the two of the first electrodes.

Abstract: A battery pack comprises a first battery cell and a second battery cell; the first and second battery cells each have a size within a manufacturing tolerance. A housing comprises at least one wall defining a first hole and a second hole, each hole for receiving one of the first or second battery cells, each hole having a size corresponding to a minimum size within the manufacturing tolerance. There is a flexibly resilient portion moveable between a rest position and a clamping position whereby the flexibly resilient portion clamps against at least one of the first and second battery cells when one of the first or second battery cells has a size greater than the minimum size within the manufacturing tolerance.

Abstract: An electrode assembly and a rechargeable battery including the electrode assembly are disclosed. In one aspect, the electrode assembly includes a first electrode and a second electrode that are wound with a separator placed therebetween. The second electrode includes a first coated portion coated with an active material and a plurality of first electrode tabs T1-Tn protruding outwardly from the first coated portion, wherein n is a natural number greater than 2. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1-Tn are respectively formed, wherein the first and nth portions of the first electrode respectively define the innermost and outermost portions thereof. The distance between the first electrode tab Tn placed at the outermost portion and the first electrode Tn?1 placed at the second outermost portion of the first electrode is less than any of the distances between two adjacent ones of the other first electrode tabs T1-Tn?1.

Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode. The electrolyte and/or electrode composition includes zirconia stabilized with (i) scandia, (ii) ceria, and (iii) at least one of yttria and ytterbia. The composition does not experience a degradation of ionic conductivity of greater than 15% after 4000 hrs at a temperature of 850° C.

Abstract: The invention relates to a battery cell, in particular a lithium-ion battery cell, wherein compared to conventional battery cells, a number of components can be reduced. The battery cell has at least one winding element, two current collectors each electrically connected to one of the electrodes of the winding element, and a metal housing. In order to be able to establish an electrical contact between one of the electrodes of the winding element and the housing, one of the current collectors is specifically configured and arranged such that said current collector is in direct mechanical and electrically conductive contact with the housing. To this end, said housing contact current collector (29) can be provided with a suitably wide plate-shaped area (35), which in edge regions (37) that are bent away at a right angle can rest against an interior wall of the housing of the battery cell in a planar manner, and can establish an electrical contact therewith.

Abstract: An electric storage device includes: a container; an electrode assembly contained in the container, the electrode assembly including a positive electrode having a positive electrode substrate and a positive electrode active material layer that is formed on the positive electrode substrate and contains a positive electrode active material, a negative electrode having a negative electrode substrate and a negative electrode active material layer that is formed on the negative electrode substrate and contains a negative electrode active material, and a separator interposed between the positive and negative electrodes; and an electrolyte contained in the container, wherein the separator is configured such that a stress caused at a specific compressed depth in the separator, which corresponds to 5% of the thickness of the negative electrode active material layer, is 0.5 MPa or more and 14 MPa or less. An electric storage apparatus includes a plurality of electric storage devices described above.

Abstract: An electrode assembly and a secondary battery having an electrode tab are disclosed. In one aspect, the electrode assembly includes first and second electrodes which are wound with a separator placed therebetween. The first electrode includes a first coated portion, and a plurality of first electrode tabs T1-Tn not coated with an active material and protruding outwardly from the first coated portion, wherein n is greater than 2. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1-Tn are respectively formed, wherein the first and nth portions respectively define the innermost and outermost portions thereof. The distance between the first electrode tab Tn placed at the outermost portion and the first electrode Tn?1 placed at the second outermost portion is greater than any of the distances between two adjacent ones of the other first electrode tabs T1-Tn?1.

Abstract: A method for manufacturing an electrode. To provide a particularly cost-effective method, which is able to provide a current collector layer that adheres well and is electrically well-connected, the method including: a) providing a layer having an active material; b) one-sided electrochemical deposition of a metallic material on the layer having the active material, thus forming a current collector layer having the metallic material; c) joining the product obtained in b) to another layer having an active material and to a contact element so that the current collector layer having the deposited metallic material is situated between two layers having an active material, and that the contact element for establishing contact is at least partially exposed and is in contact with the current collector layer having the deposited metallic material.

Abstract: A positive electrode active material for a lithium secondary battery includes a primary particle containing a spinel phase and a layered rock-salt phase. The spinel phase is formed of a nickel-and-manganese-containing composite oxide having a spinel crystal structure that includes lithium, nickel, and manganese. The layered rock-salt phase is formed of a transition metal composite oxide having a layered rock-salt crystal structure that includes lithium and at least one transition metal element. The nickel-and-manganese-containing composite oxide contains oxygen and fluorine. The transition metal composite oxide includes oxygen and fluorine.

Abstract: An air-metal secondary battery module includes one or more metal-air secondary battery units, each of which has a water intake part for taking an aqueous solution therein and a gas outlet port for discharging gas generated during charging; an aqueous solution storage unit which stores the aqueous solution; an aqueous solution supply unit which connects the one or more water intake parts to the aqueous solution storage unit; and a gas discharge unit which is connected to the one or more gas outlet ports to discharge the gas discharged from the gas outlet ports to the outside.

Abstract: The invention relates to a device of the hybrid supercapacitor type comprising at least one cell comprising: a porous positive electrode comprising activated carbon; a negative electrode comprising a carbonaceous material capable of inserting an alkaline element other than lithium, this carbonaceous material being different from the activated carbon used at the positive electrode; and a non-aqueous electrolyte comprising a salt selected from salts of an alkaline metal other than lithium.

Abstract: A module having polymeric gas-separation membranes is capable of operation in extreme temperature environments. In one embodiment, the module includes polymeric fiber membranes, a tubesheet for holding the membranes, and a sleeve encasing the membranes, all of which are made of materials having coefficients of thermal expansion which differ from each other by not more than about 10%. In another embodiment, the membranes, the tubesheet, and the sleeve are all made of materials having a glass transition temperature greater than a highest anticipated temperature of operation of the module. In another embodiment, the module includes a head, and a clamshell having multiple protrusions which engage corresponding grooves in the head and in at least two grooves formed in the tubesheet.

Abstract: The present disclosure provides an apparatus for preparing an electrode assembly, comprising a printing unit including a charging mean for bringing polymer particles into electric charging to obtain electrically charged polymer particles, and a transferring mean for coating the electrically charged polymer particles by way of transferring on at least one surface of a substrate for an electrochemical device to form an adhesive layer on the substrate, the substrate being at least one of a cathode, an anode and a separator; and a laminating unit that applies heat and pressure to the substrate having the adhesive layer formed thereon so as to obtain the electrode assembly comprising the cathode, the anode and the separator interposed therebetween.

Abstract: A rechargeable electrochemical battery cell with a housing, a positive electrode, a negative electrode and an electrolyte which contains SO2 and a conducting salt of the active metal of the cell, whereby at least one of the electrodes contains a binder chosen from the group: Binder A, which consists of a polymer, which is made of monomeric structural units of a conjugated carboxylic acid or of the alkali salt, earth alkali salt or ammonium salt of this conjugated carboxylic acid or a combination thereof or binder B which consists of a polymer based on monomeric styrene structural units or butadiene structural units or a mixture of binder A and B.

Abstract: The present invention relates to a device for generatively manufacturing a three-dimensional object (3), comprising: a frame (1) defining a building field (6) at an upper portion (2) thereof; a plate (12) which connects the frame (1) with a housing (100) of the device; a support (5) which is arranged in the frame (1) and vertically movable by a lift mechanics (4) at least below the building field (6); a radiation device (7) which generates an energetic beam (8, 8?) which is focused by a deflection means (9) to arbitrary points in the building field (6), so as to selectively sinter or melt a powdery material (11) which is present in the building field (6); a coater (10) for applying a layer of powdery material (11) onto the support (5) or a previously applied layer of the powdery material (11). A thermal insulation (13) is arranged between the frame (1) and the plate.

Abstract: An electrochemical or electric layer system, having at least two electrode layers and at least one ion-conducting layer disposed between two electrode layers. The ion-conducting layer has at least one ion-conducting solid electrolyte and at least one binder at grain boundaries of the at least one ion-conducting solid electrolyte for improving the ion conductivity over the grain boundaries and the adhesion of the layers.

Abstract: A nickel hydroxide for an alkaline secondary battery, wherein the nickel hydroxide contains ?-nickel hydroxide particles and ?-nickel hydroxide particles, and the ratio of the ?-nickel hydroxide to the total amount of the nickel hydroxide is less than 75% by mass.

Abstract: The stacked cell manufacturing method includes the steps of executing zigzag-folding of a band-like separator by the intermediary of a zigzag-folding mechanism, alternately feeding a positive-plate and a negative-plate onto the separator as folded back every time the separator is folded back by the zigzag-folding. A positive-plate transfer head and a negative-plate transfer head are set so as to alternately undergo a linearly reciprocating transfer in a horizontal direction at least on the table, the direction of a horizontal and reciprocating transfer made by the positive-plate transfer head and the negative-plate transfer head is set to coincide with a folding-back direction of the zigzag-folding of the separator, and a force caused by the horizontal and reciprocating transfer alternately made by each of these transfer heads is imparted to the separator guided onto the table, thereby executing the zigzag-folding while the separator is drawn onto the table.

Abstract: A thin film is used in a metallic collector in order to increase the volume energy density. However, the strength of the thin film is low, so when a negative plate or a positive plate is directly joined to a terminal base portion, even an insignificant load might cause damage, such as cutting of the metallic collector. Even in a structure where the metallic collector is joined to a highly-conductive plate-like metal or a highly-conductive plate-like resin, and where the collecting plate is joined to a terminal base portion, the connection between the collecting plate and the terminal base portion affects the battery properties.

Abstract: A bus bar attachment device includes a bus bar placing part for placing a bus bar onto a pallet, and a pressing part for causing first and second adjacent surfaces in the bus bar placed by the bus bar supply part to press against first and second adjacent wall surfaces in a bus bar positioning part of the pallet. The bus bar is placed by the bus bar supply part in a position where the first and second surfaces face the first and second wall surfaces in the bus bar positioning part, and the first and second surfaces are pressed the pressing part against the first and second wall surfaces in the bus bar positioning part to set the position of the bus bar relative to a battery.

Abstract: Described herein are improved composite anodes and lithium-ion batteries made therefrom. Further described are methods of making and using the improved anodes and batteries. In general, the anodes include a porous composite having a plurality of agglomerated nanocomposites. At least one of the plurality of agglomerated nanocomposites is formed from a dendritic particle, which is a three-dimensional, randomly-ordered assembly of nanoparticles of an electrically conducting material and a plurality of discrete non-porous nanoparticles of a non-carbon Group 4A element or mixture thereof disposed on a surface of the dendritic particle. At least one nanocomposite of the plurality of agglomerated nanocomposites has at least a portion of its dendritic particle in electrical communication with at least a portion of a dendritic particle of an adjacent nanocomposite in the plurality of agglomerated nanocomposites.

Abstract: There is provided a cylindrical pin-type lithium-ion secondary battery having excellent high temperature storage characteristics and charge-discharge cycle characteristics. The battery includes: a bottom-closed cylindrical battery case having an opening portion; a wound-type electrode assembly and a non-aqueous electrolyte housed in the battery case; and a sealing plate sealing the opening portion. The battery has: an outer diameter R of 3 to 6.5 mm; a height H of 15 to 65 mm; an amount of the non-aqueous electrolyte per discharge capacity of 1 mAh of 1.7 to 2.8 ?L; and a packing ratio of 71 to 85%.

Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes, negative electrodes, and separators disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case, wherein the electrode assembly is provided at one and/or the other of opposite surfaces thereof adjacent to electrode terminals, among outer surfaces thereof, with a depression having an outwardly increasing size.

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: Provided are methods of preparing a separator/anode assembly for use in an electric current producing cell, wherein the assembly comprises an anode current collector layer interposed between a first anode layer and a second anode layer and a porous separator layer on the side of the first anode layer opposite to the anode current collector layer, wherein the first anode layer is coated directly on the separator layer.

Abstract: Provided is a technique to confirm the performance of the conductive resin layer of a current collector without actually preparing an electrode structure, a non-aqueous electrolyte battery, an electrical double layer capacitor, a lithium ion capacitor, or an electrical storage device, and to confirm the performance of the conductive resin layer easily with high accuracy by a non-destructive test. A current collector includes a conductive substrate and a resin layer possessing conductivity, the resin layer being formed on at least one side of the conductive substrate. The resin layer possessing conductivity contains a resin and a conductive material containing carbon as a main component. When the color tone of the surface of the resin layer possessing conductivity is specified with L*a*b* color system, L* is 60 or lower, a* is ?1.0 to 1.0, and b* is ?1.0 to 3.0.

Abstract: A battery cell separator according to an exemplary aspect of the present disclosure includes, among other things, a top surface and a bottom surface. A body extends between the top surface and the bottom surface and includes a first contoured surface on a first side of the body and a second contoured surface on a second side. The first contoured surface and the second contoured surface converging between the top surface and a center of the body and diverging between the center and the bottom surface.

Abstract: In a lid for a battery case where an annular thin portion is formed integrally with a lid main body by coining, a pair of ribs formed integrally with the lid main body so as to bulge from the lid main body and extending in a short direction of the lid main body are disposed on both sides of the annular thin portion in a long direction of the lid main body.

Abstract: An anode active material for a lithium-ion battery cell comprises low density silicon. The anode active material is provided in an anode for a lithium-ion battery. Also disclosed are methods of making the anode active material.

Abstract: A battery separator includes: a basement layer that comprises polyolefin and/or nonwoven fabric; a composite layer that is disposed on at least one surface of the basement layer, where the composite layer comprises polymer adhesive, and boride powder and ceramic powder that are dispersed in the polymer adhesive. An embodiment of the present invention also provides a method for constructing a battery separator and a lithium-ion battery. In the battery separator provided by the embodiment of the present invention, by adding the boride powder, the battery separator may prevent electrolyte deterioration, thereby improving the battery cycle performance; by adding the ceramic powder, reliability may be enhanced for heat resistance of the battery separator and security of the battery.