Abstract: An alkaline battery comprises an anode, a cathode, a separator disposed between the anode and the cathode, and an electrolyte in fluid communication with the anode, the cathode, and the separator. The separator comprises at least one ion selective layer that can include at least one of graphene, graphene oxide, reduced graphene oxide, functionalized graphene, or combinations thereof. This can allow the ion selective layer to be configured to selectively block zincate ions.

Abstract: An electrode assembly includes a plurality of electrodes arranged in a stack along a stacking axis with a respective separator portion of an elongated separator sheet positioned between and winding around each of the electrodes in the stack along a serpentine path. The plurality of electrodes include a top electrode positioned at a top of the stack along the stacking axis, and the plurality of electrodes include a bottom electrode positioned at a bottom of the stack. The separator portions in the stack include a top separator portion abutting the top electrode and a bottom separator portion abutting the bottom electrode. The top separator portion and the bottom separator portion each have a value of air permeability from 80 sec/100 ml to 120 sec/100 ml per square inch of the respective separator portion at a pressure of 0.05 MPa and at room temperature.

Abstract: Microporous sheet product suitable for use as a battery separator and method of forming the same. According to one embodiment, the method involves forming an extrusion mixture of one or more thermoplastic polymers and a fluid having a high vapor pressure. Next, the mixture is extruded through a die head, cooled and shaped in a first vapor zone under an above-UEL condition to form a solid sheet material. Next, the sheet material is subjected to a two-step process in a second vapor zone under a below-LEL condition, the first step involving a first stretching/fluid vaporization at a higher temperature, the second step involving a second stretching/fluid vaporization at a lower temperature. The resultant sheet is then annealed, and the remainder of fluid is removed to form a sheet product having a thickness characterized by a structure of smaller and larger pore strata across its thickness.

Abstract: Disclosed is an organic/inorganic composite porous film comprising: (a) inorganic particles; and (b) a binder polymer coating layer formed partially or totally on surfaces of the inorganic particles, wherein the inorganic particles are interconnected among themselves and are fixed by the binder polymer, and interstitial volumes among the inorganic particles form a micropore structure. A method for manufacturing the same film and an electrochemical device including the same film are also disclosed. An electrochemical device comprising the organic/inorganic composite porous film shows improved safety and quality.

Abstract: A ceramic-polymer film includes a polymer matrix; a plasticizer; a lithium salt; and AlxLi7-xLa3Zr1.75Ta0.25O12 where x ranges from 0.01 to 1 (LLZO), wherein the LLZO are nanoparticles with diameters that range from 20 to 2000 nm and wherein the film has an ionic conductivity of greater than 1×10?3 S/cm at room temperature. The nanocomposite film can be formed on a substrate and the concentration of LLZO nanoparticles decreases in the direction of the substrate to form a concentration gradient over the thickness of the film. The film can be employed as a non-flammable, solid-state electrolyte for lithium electrochemical cells and batteries. The LLZO serves as a barrier to dendrite growth.

Abstract: An electrochemical cell including a positive electrode (e.g., a cathode) and a negative electrode (e.g., an anode), at least one of which includes an integrated ceramic separator. An integrated ceramic separator may include a plurality of ceramic particles. In some examples, an interlocking region may be disposed between the integrated ceramic separator layer and a corresponding electrode layer, the region including a non-planar boundary between the two layers. In some examples, the electrochemical cell includes a polyolefin separator disposed between the positive electrode and the negative electrode. In some examples, both the positive electrode and the negative electrode include an integrated ceramic separator. In these examples, the positive electrode and the negative electrode may be calendered together such that the integrated separator layers merge and become indistinguishable from each other.

Abstract: A negative electrode for a lithium secondary battery includes: a negative electrode active layer provided on at least one surface of a negative electrode current collector, and including a negative electrode active material; and a coating layer disposed on the negative electrode active layer. The coating layer contains silicon-containing particles, aluminum-containing particles and a dispersant, and a volume resistance of the coating layer is about 1.0×10?4 ?·cm to 1.0 ?·cm.

Abstract: Provided are a composite separator including a coating layer including inorganic particles and a binder formed on a porous substrate, which has improved coatability and improved thermal shrinkage, and a lithium secondary battery using the same.

Abstract: The present disclosure relates to a separator, a method of preparing the separator, and a secondary battery comprising the separator, the separator including: a web structure of organic fibers; and a composite coating layer arranged on the organic fibers, wherein the composite coating layer includes heat-resistant inorganic particles and a hydrophilic organic compound.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a positive electrode active material layer including a lithium-cobalt composite oxide. The lithium-cobalt composite oxide has a layered rock-salt crystal structure. The negative electrode includes a negative electrode active material layer including graphite. When the secondary battery is charged and discharged with an upper limit of a closed circuit voltage being set to 4.42 V or higher, a unit capacity (mAh/g) satisfies a condition represented by 168 mAh/g?unit capacity (mAh/g)?(?0.28×area rate (%)+178) mAh/g.

Abstract: Disclosed are a lithium secondary battery including: a positive electrode; a negative electrode; an electrolyte; and a separator including a separator substrate and a ceramic layer formed on one surface or both surfaces of the separator substrate. Particularly, the ceramic layer may include a first ceramic particle including an epoxide group and a second ceramic particle including an amine group, and the first ceramic particle may be chemically bonded to the second ceramic particle.

Abstract: A lithium-ion secondary battery includes an inorganic filler having a mean particle size of 1 ?m to 10 ?m. A ratio A/B is 14 to 28, where A is a weight ratio of a second binder and the inorganic filler (i.e., second binder/inorganic filler) in an insulating layer, and B is a weight ratio of a first binder and positive electrode active material particles (i.e., first binder/positive electrode active material particles) in a positive electrode active material layer.

Abstract: A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly which is wound and includes a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode; a casing which accommodates the electrode assembly; a first electrode tab which is connected to a non-coated portion of the first electrode; a second electrode tab which is connected to a non-coated portion of the second electrode; and a first insulating tape which is positioned at a winding start portion of the electrode assembly and attached to the non-coated portion of the first electrode so as to at least cover a center of a first curved portion which is curvedly formed as the electrode assembly is wound.

Abstract: Disclosed is a lead acid battery having a negative electrode plate and a positive electrode plate, each plate formed of a lead-antimony grid coated with an active material. A separator is disposed between the first and second electrode plate faces and an electrolyte solution immersing the negative electrode plate, the positive electrode plate the separator. At least one of the lead-antimony electrode grids, the separator or the electrolyte solution contains TiO2, an amount sufficient to suppress the migration of antimony from the positive electrode plate to the negative electrode plate.

Abstract: A separator for a lithium-containing electrochemical cell is provided herein. The separator includes a porous substrate having a first side and an opposing second side and a coating layer disposed adjacent to at least the first side of the porous substrate. The coating layer includes three-dimensionally (3D) ordered porous ceramic particles. An electrochemical cell including such a separator is also provided herein. The electrochemical cell may or may not include a negative electrode.

Abstract: The present disclosure provides a wound-type cell and a preparation method thereof, a battery, and an electronic product. The wound-type cell includes a positive sheet, a negative sheet, and an insulated separator located between the positive sheet and the negative sheet; the negative sheet includes a negative base layer, a negative coating, and a negative tab set on the surface of the negative base layer. The negative coating covers surface of the negative base layer, and the negative coating has a tab connection area that avoids the negative tab. The negative tab is located in the tab connection area; the insulated separator between the tab connection area and the positive sheet is provided with a barrier layer covering the tab connection area. The provided solutions are helpful to reduce safety risks caused by lithium-plating during the fast charging of lithium ion battery.

Abstract: Energy storage devices, battery cells, and batteries may include a battery cell component produced by methods including depositing a first separator layer over an electrode material, where the first separator layer includes a ceramic material. The methods may include depositing a second separator layer over the first separator layer, where the second separator layer includes an adhesive material. The methods may also include drying the second separator layer to form the battery cell component.

Abstract: An electrochemical device of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator. The separator includes a first porous layer composed mainly of a thermoplastic resin and a second porous layer composed mainly of insulating particles with a heat-resistant temperature of 150° C. or higher. The first porous layer is disposed to face the negative electrode.

Abstract: A lithium secondary battery according to an embodiment of the present invention includes an electrode assembly including a separation layer, and a plurality of cathodes and a plurality of anodes separated by the separation layer and repeatedly stacked, and a gas adsorption layer coated on a single surface of an outermost anode among the plurality of anodes.

Abstract: The present disclosure is related to an electrolyte for a sodium secondary battery, wherein the electrolyte comprises a compound having a chemical structure including an oxygen molecule covalently bound to R1 and R2 groups (R1-O-R2), wherein each of R1 and R2 is an alkyl group or an aryl group.

Abstract: A bonded soft magnet object comprising bonded soft magnetic particles of an iron-containing alloy having a soft magnet characteristic, wherein the bonded soft magnetic particles have a particle size of at least 200 nm and up to 100 microns. Also described herein is a method for producing the bonded soft magnet by indirect additive manufacturing (IAM), such as by: (i) producing a soft magnet preform by bonding soft magnetic particles with an organic binder, wherein the magnetic particles have an iron-containing alloy composition with a soft magnet characteristic, and wherein the particles of the soft magnet material have a particle size of at least 200 nm and up to 100 microns; (ii) subjecting the preform to an elevated temperature sufficient to remove the organic binder to produce a binder-free preform; and (iii) sintering the binder-free preform at a further elevated temperature to produce the bonded soft magnet.

Abstract: The present invention relates to a separator including: (a) a porous substrate; and (b) an inorganic composite layer formed on one surface or both surfaces of the porous substrate, and including one or more inorganic particles and one or more one-dimensional inorganic materials, wherein the dimensions of the one or more inorganic particles and the one or more one-dimensional inorganic materials are different, wherein the one or more one-dimensional inorganic materials include inorganic nanowire(s) and/or inorganic nanofiber(s), wherein the one or more inorganic particles may be bound to each other, or the inorganic composite layer may be anchored and adhered to the porous substrate, by the one or more one-dimensional inorganic materials, and the inorganic composite layer does not include a polymer-based organic binder.

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode collector, a positive electrode active material layer on part of the surface of the positive electrode collector, and an insulating layer on another part of the surface of the positive electrode collector; a negative electrode including a negative electrode collector; and a negative electrode active material layer on part of the surface of the negative electrode collector; a separator that insulates the positive and negative electrodes; and a nonaqueous electrolyte. A width of the negative electrode active material layer is wider than the positive electrode active material layer. The insulating layer protrudes from the negative electrode active material layer; and exhibits a thermal shrinkage factor of 13% or less in a direction parallel to the surface of a square insulating layer sample having a side length of 5 cm and heated at 150° C. for 1 hour.

Abstract: A separator for a lithium battery having (a) a porous polymeric layer, such as a polyethylene layer; and (b) a nanoporous inorganic particle/polymer layer on both sides of the polymeric layer, the nanoporous layer having an inorganic oxide and one or more polymers; the volume fraction of the polymers in the nanoporous layer is about 15% to about 50%, and the crystallite size of the inorganic oxide is 5 nm to 90 nm.

Abstract: A method of producing a capacitor electrode includes forming an oxide layer on a foil. The method also includes inducing defects in the oxide layer followed by reforming the oxide layer. The oxide layer is reformed so as to generate a reformed oxide layer that is an aluminum oxide with a boehmite phase and a pseudo-boehmite phase. The amount of the boehmite phase in the reformed oxide layer is greater than the amount of the pseudo-boehmite phase in the reformed oxide layer.

Abstract: A separator for an electrochemical device, including: a porous polymer substrate having a plurality of pores; and a porous coating layer on at least one surface of the porous polymer substrate, wherein the porous coating layer comprises boehmite particles and a binder polymer, wherein the binder polymer is positioned on at least a part of the surface of the boehmite particles and connects and fixes the boehmite particles with one another. The boehmite particles have an average particle diameter of 2.0 ?m to 3.5 ?m and a specific surface area of 4.0 m2/g to 4.5 m2/g, and one side of the porous coating layer has a thickness of 2 ?m to 10 ?m.

Abstract: A negative electrode for a lithium secondary battery including a lithium metal layer; a first protective layer formed on a surface of the lithium metal layer; and a second protective layer formed on a surface of the first protective layer opposite the lithium metal layer, wherein the first protective layer and the second protective layer are different from each other in at least one property selected from the group consisting of ion conductivity and electrolyte uptake.

Abstract: Provided are a solid electrolyte composition including an inorganic solid electrolyte, binder particles which include a polymer having an SP value of 10.5 cal1/2 cm?3/2 or more and have an average particle diameter of 10 nm or more and 50,000 nm or less, and a dispersion medium, a sheet for an all-solid state secondary battery, an electrode sheet for an all-solid state secondary battery, and an all-solid state secondary battery for which the same solid electrolyte composition is used, and methods for manufacturing the electrode sheet for an all-solid state secondary battery and the all-solid state secondary battery.

Abstract: A method for producing a microporous material comprising the steps of: providing an ultrahigh molecular weight polyethylene (UHMWPE); providing a filler; providing a processing plasticizer; adding the filler to the UHMWPE in a mixture being in the range of from about 1:9 to about 15:1 filler to UHMWPE by weight; adding the processing plasticizer to the mixture; extruding the mixture to form a sheet from the mixture; calendering the sheet; extracting the processing plasticizer from the sheet to produce a matrix comprising UHMWPE and the filler distributed throughout the matrix; stretching the microporous material in at least one direction to a stretch ratio of at least about 1.5 to produce a stretched microporous matrix; and subsequently calendering the stretched microporous matrix to produce a microporous material which exhibits improved physical and dimensional stability properties over the stretched microporous matrix.

Abstract: A secondary battery, including a positive electrode, a negative electrode, a separator sandwiched between the positive electrode and the negative electrode, and an electrolyte are provided. In some embodiments, the positive electrode includes a positive electrode current collector having two main surfaces, the negative electrode includes a negative electrode current collector having two main surfaces, and at least one of the positive electrode current collector and the negative electrode current collector includes at least one recess structure extending from at least one main surface into interior of the current collector, where the recess structure has a recess depth h1 in microns, the electrolyte has a conductivity ? in Siemens/meter, and numerically, ? and h1 satisfy the following relationship: 8tanhh1+0.2h1???10tanh(h1)2+2+0.1h1. This application further provides a battery module including the foregoing secondary battery, a battery pack, and an electric apparatus.

Abstract: A battery includes an anode, a cathode, and a porous separator having a surface and percolating pores providing a porosity of from 20% to 80%. A passively impact resistant composite electrolyte includes an electrolyte and electrically non-conducting particles that enable shear thickening. The particles can have a polydispersity index of no greater than 0.1, an average particle size in a range of from 50 nm to 1 um, and an absolute zeta potential of greater than ±40 mV. The shear thickening enabling particles can be from 10 wt. % to 40 wt. % of the total weight of the separator and shear thickening particles. Between 20-40 wt. % of the shear thickening enabling particles are located in the pores of the separator.

Abstract: A separator includes an inorganic particle layer including an inorganic particle, a polymeric binder and a fiber substance. A mass ratio of the fiber substance with respect to a total mass of the inorganic particle, the polymeric binder and the fiber substance is 0.1 mass % or more and 40 mass % or less.

Abstract: The invention relates to insulating composite materials comprising an inorganic aerogel and a melamine foam. The invention also relates to the product method of said materials, and to the use of same.

Abstract: Method of making a polymer matrix composite comprising a porous polymeric network structure; and a plurality of particles distributed within the polymeric network structure, the method comprising: combining a thermoplastic polymer, a solvent that the thermoplastic polymer is soluble in, and a plurality of particles to provide a slurry; forming the slurry in to an article; heating the article in an environment to retain at least 90 percent by weight of the solvent, based on the weight of the solvent in the slurry, and inducing phase separation of the thermoplastic polymer from the solvent to provide the polymer matrix composite.

Abstract: Provided are methods of preparing lithium batteries comprising a separator/electrode assembly having one or more current collector layers interposed between first and second electrode layers of the same polarity, wherein the first electrode layer is coated or laminated overlying a separator layer and the separator/electrode assembly is interleaved with an electrode comprising a current collector layer interposed between two electrode layers of opposite polarity to said first and second electrodes.

Abstract: A separator for a rechargeable battery, a method of preparing a separator, and a rechargeable lithium battery, the separator including a porous substrate; and at least one coating layer on one surface of the porous substrate, wherein the coating layer includes a fluorine-containing binder, a filler, and an additive, the fluorine-containing binder has a concentration gradient in which a concentration thereof in the coating layer increases toward an outer surface of the separator in a thickness direction of the separator, an infrared spectral intensity of a C—F group of the fluorine-containing binder is greater than 0.0030 to less than 0.0050, the additive is a hydrocarbon polymer compound that includes a carboxyl group, and a weight average molecular weight of the hydrocarbon polymer compound is about 5,000 g/mol to about 15,000 g/mol.

Abstract: A lithium-ion secondary battery includes an inorganic filler having a mean particle size of 1 ?m to 10 ?m. A ratio A/B is 14 to 28, where A is a weight ratio of a second binder and the inorganic filler (i.e., second binder/inorganic filler) in an insulating layer, and B is a weight ratio of a first binder and positive electrode active material particles (i.e., first binder/positive electrode active material particles) in a positive electrode active material layer.

Abstract: Provided are separators for use in batteries and capacitors comprising (a) at least 50% by weight of an aluminum oxide and (b) an organic polymer, wherein the aluminum oxide is surface modified by treatment with an organic acid to form a modified aluminum oxide, and wherein the treatment provides dispersibility of the aluminum oxide in aprotic solvents such as N-methyl pyrrolidone. Preferably, the organic acid is a sulfonic acid, such as p-toluenesulfonic acid. Also preferably, the organic polymer is a fluorinated polymer, such as polyvinylidene fluoride. Also provided are electrochemical cells and capacitors comprising such separators.

Abstract: A coating composition including a solvent, inorganic particles, a dispersant, and a binder, wherein the binder includes a binder B and a binder A, both the binder B and the binder A include a VDF unit and a HFP unit, binder B includes 8 to 50 wt % of the HFP-derived unit, and binder A includes 5 wt % or more of the HFP-derived unit under a condition that a proportion of the HFP-derived unit in the binder A is 80% or less of a proportion of the HFP-derived unit in the binder B, the binder B has a total number average molecular weight of 200,000 to 2,000,000 Da, and the binder A has a total number average molecular weight corresponding to 70% or less of that of the binder B, and a weight ratio of the binder A:the binder B in the coating composition is 0.1 to 10:1. The coating composition is suitable for use in coating at least one surface of a porous substrate having a plurality of pores.

Abstract: A one-step molded lithium ion battery separator and preparation method and application thereof are provided. The battery separator comprises a support layer and a filler layer. The support layer comprises at least two of superfine main fiber, thermoplastic bonded fiber and first nanofiber, and the filler layer comprises at least one of inorganic fillers and third nanofiber. The lithium ion battery separator has a thickness of 19-31 ?m, a maximum pore diameter of no more than 1 ?m, and a heat shrinkage rate of less than 3% after treatment at 300° C. for 1 hour, and the separator still has a certain strength at a high temperature, ensuring stability and isolation of the rigid structure of the filler layer at a high temperature, satisfying requirements of the separator in terms of heat resistance, pore size and strength, having excellent comprehensive performance.

Abstract: An alkaline electrochemical cell includes a cathode; a gelled anode having an anode active material and an electrolyte; and a separator disposed between the cathode and the anode; wherein the separator includes a non-conductive, porous material having a mean pore size of about 1 micron to about 5 microns, a maximum pore size of about 19 microns, and an air permeability of about 0.5 cc/cm2/s to about 3.8 cc/cm2/s at 125 Pa.

Abstract: A separator for an electrochemical device including a heat resistant layer and an adhesive layer and a method for manufacturing the same. The separator uses a heat resistant polymer having a high melting point for a heat resistant layer and shows excellent peel strength between the separator substrate and the heat resistant layer and high adhesion between the separator and an electrode.

Abstract: Provided are new solid-state electrochemical cells and methods for fabricating these cells. In some examples, a solid-state electrochemical cell is assembled using a negative electrode, a positive electrode, and a gel-polymer electrolyte layer, which is disposed and provides ionic communications between these electrodes. Prior to this assembly, the negative electrode is free from electrolytes. The negative electrode is fabricated using a coating technique, e.g., forming a slurry, comprising a polymer binder and one or more negative active materials structures, such as silicon, graphite, and the like. The porosity, size, and other characteristics of the negative active materials structures and of the resulting coated later are specifically controlled to ensure operation with the gel-polymer electrolyte layer or, more specifically, high-rate charge and discharge, e.g., greater than 1 mA/cm2.

Abstract: At low cost, a porous film has high thermal film rupture resistance and outstanding battery characteristics. The porous film has a porous layer on at least one surface of a porous substrate, and if the surface porosity of the porous layer is defined as ? and the cross-sectional void ratio of the porous layer is defined as ?, then ?/? does not exceed 90%.

Abstract: A process can be used to produce a charge storage unit, especially a secondary battery, the electrodes of which contain an organic redox-active polymer, and which includes a polymeric solid electrolyte. The solid electrolyte is obtained by polymerizing from mixtures of acrylates with methacrylates in the presence of at least one ionic liquid, which imparts advantageous properties to the charge storage unit.

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: A purpose of the present invention is to provide a lithium ion secondary battery in which an increase in internal resistance is suppressed and a halogenated cyclic anhydride is used as an electrolyte additive. The lithium ion secondary battery according to the present invention comprises a positive electrode and an electrolyte solution, wherein a porous layer comprising an insulating filler is formed on the positive electrode, and the electrolyte solution comprises 0.005 to 10 weight % of a halogenated cyclic acid anhydride.

Abstract: A solid electrolyte (10) of the present disclosure includes porous silica (11) having a plurality of pores (12) interconnected mutually and an electrolyte (13) coating inner surfaces of the plurality of pores (12). The electrolyte (13) includes 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide represented by EMI-FSI and a lithium salt dissolved in the EMI-FSI. A molar ratio of the EMI-FSI to the porous silica (11) is larger than 1.0 and less than 3.5.

Abstract: To solve the above problem, a method for manufacturing a top insulator configured to be inserted into a case of a secondary battery, according to an embodiment of the present invention includes: preparing a top insulator fabric by applying a silicone rubber to at least one surface of a glass fiber fabric formed by crossing weft yarns and warp yarns of glass fiber raw yams; and punching the top insulator fabric.

Abstract: Disclosed is an electrode assembly including two electrodes having polarities opposite to each other, and a separator interposed between the two electrodes, wherein the separator includes: a separator base which includes a porous polymer substrate having a plurality of pores, and a porous coating layer; and an adhesive layer formed on at least one surface of the separator base, provided to face either of the electrodes and containing an adhesive resin, and wherein the adhesion (Peel Strength) between the porous polymer substrate and the porous coating layer and the adhesion (Lami Strength) between the adhesive layer and the electrode satisfy Mathematical Formula 1. An electrochemical device including the separator is also disclosed. In the electrode assembly, the separator shows increased resistance against scratching and the adhesion between the separator and the electrode can be improved.