Abstract: A method for producing a lithium ion secondary battery in which a positive electrode, a heat-resistant insulating layer provided separator having a heat-resistant insulating layer formed of oxide particles on one surface of a resin porous substrate, and a negative electrode are laminated on one another, and a nonaqueous electrolyte is impregnated in the heat-resistant insulating layer provided separator, includes drying the heat-resistant insulating layer provided separator before laminating so that the water content in the heat-resistant insulating layer provided separator remains in a predetermined range. In the drying, the water content in the heat-resistant insulating layer provided separator is decreased to the predetermined range by controlling the dew point and maintaining the predetermined range after reaching the predetermined range of water content.

Abstract: The present invention relates to: an alumina powder wherein a ratio (TBD/LBD) of a tapped bulk density (TBD) to a loose bulk density (LBD) is 1.5 or more; an alumina slurry containing the same; an alumina-containing coating layer; a multilayer separation membrane; and a secondary battery.

Abstract: A lithium ion secondary battery includes a housing. An electrode group and an electrolytic solution are in the housing. The electrode group is immersed in the electrolytic solution. The electrode group includes a positive electrode including a positive electrode active material layer and a negative electrode including a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is disposed on a surface of the negative electrode current collector. A metal piece is electrically connected to the negative electrode current collector. The metal piece is disposed at a position at which at least a part of the metal piece is immersed in the electrolytic solution. An oxidation-reduction potential of the metal piece is within an overdischarging voltage range and is lower than an oxidation-reduction potential of the negative electrode current collector.

Abstract: A high solids content paste for fabrication of secondary battery electrodes may comprise: a negative active material or a positive active material; a binder; a solvent; and a hyperdispersant; wherein the high solids content paste has a specific viscosity chosen for a particular coating tool and a composition such that the high solids content paste will maintain a deposited shape after coating at least until the high solids content paste has dried and wherein the dry coating thickness is in the range of 5 microns to 300 microns. The high solids content paste with negative active material has a viscosity in the range of 30,000 cP to 45,000 cP and a corresponding density of 1.40 g/cc to 1.43 g/cc. The high solids content paste with positive active material has a viscosity in the range of 25,479 cP to 47,184 cP and a corresponding density of 2.72 g/cc to 2.73 g/cc.

Abstract: A separator for a rechargeable battery includes a porous substrate and an adhesive layer on at least one surface thereof. The adhesive layer includes a first binder, a second binder, and a filler. The first binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of about 10 wt % or less based on a total weight of the first binder. A weight average molecular weight of the first binder ranges from about 800,000 to about 1,500,000. The second binder includes a structural unit derived from vinylidene fluoride and a structural unit derived from hexafluoropropylene. The structural unit derived from hexafluoropropylene is included in an amount of 10 wt % or less based on a total weight of the second binder. A weight average molecular weight of the second binder is 600,000 or less.

Abstract: Provided is a porous separator for a secondary battery including an inorganic oxide layer formed on a porous substrate by an atomic layer deposition process, such that a thin separator having excellent heat stability, permeability and electrolyte impregnability may be provided by controlling specific conditions in the process and thicknesses of the inorganic oxide layers on a surface and inside of the porous separator.

Abstract: Disclosed is a laminated separator including a first polyolefin microporous layer and a second polyolefin microporous layer which is laminated on the first polyolefin microporous layer and which is different from the first polyolefin microporous layer, wherein at least one of the first microporous layer and the second microporous layer includes an inorganic particle having a primary particle size of 1 nm or more and 80 nm or less.

Abstract: In regard to at least one of long separator sheets (12a, 12b), measurement is carried out to measure the amount of curl at an edge of the at least one of the long separator sheets (12a, 12b) while applying tension to the at least one of the long separator sheets (12a, 12b) in the lengthwise direction (MD) of the at least one of the long separator sheets (12a, 12b), the edge being parallel to the lengthwise direction (MD) of the at least one of the long separator sheets (12a, 12b). This makes it possible to provide a method of measuring the amount of curl in a separator, a slitting apparatus, and a curl amount measuring apparatus, each of which is capable of carrying out a highly accurate nondestructive measurement of the amount of curl without having to cut a sample from a long separator sheet.

Abstract: A modified separator for a high-energy lithium metal-based electrochemical cell and methods of formation relating thereto are provided. The modified separator includes a substrate including a dopant and a coating layer disposed on the doped substrate. The dopant and compound comprising the coating layer are independently selected from the group consisting of: aluminum oxide (Al2O3), titanium dioxide (TiO2), zirconium dioxide (ZrO2), zinc oxide (ZnO), iron oxide (Fe2O3), tin oxide (SnO), silicon oxide (SiO2), tantalum oxide (Ta2O5), lanthanum oxide (La2O3), hydrofluoroolefin (HfO), cerium oxide (CeO2), and combinations thereof.

Abstract: Provided is an electrode stack formed by integrating a first separator, a first electrode plate, a second separator, and a second electrode plate. The first separator has a first separator body, and a first bonding layer that is formed on a principal surface of the first separator body and contains first polyethylene particles. The second separator has a second separator body, and a second bonding layer that is formed on a principal surface of the second separator body and contains second polyethylene particles. The number of particles of the first polyethylene particles per unit area of the first bonding layer is larger than the number of particles of the second polyethylene particles per unit area of the second bonding layer.

Abstract: A separator-integrated electrode plate includes a current collecting sheet; an active material layer provided on the current collecting sheet, and a separator layer provided on the active material layer and configured to allow ions in electrolyte to pass through. The separator layer includes a polyimide layer provided on the active material layer and made of polyimide that has been melted in a solvent and then deposited as a film, and a polyolefin particle layer provided on the polyimide layer and made of polyolefin resin particles accumulated on the polyimide layer, the polyolefin resin particles having a melting point of 140° C. or less.

Abstract: A secondary battery includes: a cathode, an anode, and an electrolytic solution including a sulfuric acid compound represented by Xn+[M(Rf)a(CN)b(SO4)c]m?, where Xn+ is an ion such as a metal ion, M is an element such as a transition metal element, Rf is a group such as a fluorine group, a is an integer of 0 to 4, b is an integer of 0 to 5, c is an integer of 1 to 4, m is an integer of 1 to 3, and n is an integer of 1 or 2. The cathode, the anode, and the electrolytic solution are provided inside a film-like outer package member.

Abstract: Provided is a separator including a first later consisting of a porous polyolefin and a secondary battery utilizing the separator. The first layer exhibits a temperature-increase convergence time equal to or longer than 2.9 s·m2/g and equal to or shorter than 5.7 s·m2/g when the first layer is irradiated with a microwave having a frequency of 2455 MHz and an output power of 1800 W after being dipped in N-methylpyrrolidone containing 3 wt % of water. A minimum height of a ball placed over the first layer and having a diameter of 14.3 mm and a weight of 11.9 g is equal to or more than 50 cm and equal to or less than 150 cm, the minimum height causing a split in the first layer when the ball freely falls on the first layer.

Abstract: Cell stacks are presented that include binders for wet and dry lamination processes. The cell stacks, when laminated, produce battery cells (or portions thereof). The cell stacks include a cathode having a cathode active material disposed on a cathode current collector. The cell stacks also include an anode having an anode active material disposed on an anode current collector. The anode is oriented towards the cathode such that the anode active material faces the cathode active material. A separator is disposed between the cathode active material and the anode active material and comprising a binder comprising a PVdF-HFP copolymer. In certain instances, an electrolyte fluid is in contact with the separator. Methods of laminating the cell stacks are also presented.

Abstract: Alumina having excellent electrolytic solution stability, a slurry containing the same, an alumina porous film using the same, a laminated separator, a nonaqueous electrolyte secondary battery and a method for manufacturing the nonaqueous electrolyte secondary battery are provided. Alumina is provided including one or more selected from K, Mg, Ca, Sr, Ba and La in the total amount of 200 to 50,000 ppm by mass, wherein a surface concentration of one or more elements is 0.5 to 20 at % in total. Alumina is provided in which in an infrared absorption spectrum of the alumina obtained by Fourier-transform infrared spectroscopy, a peak having an intensity larger than that of a baseline defined by a line segment connecting an intensity at 3,400 cm?1 and an intensity at 3,500 cm?1 and having a half width of 90 cm?1 or less, does not exist in a range of 3,400 to 3,500 cm?1.

Abstract: A lithium metal electrode and a lithium metal battery that includes the lithium metal electrode are disclosed. The lithium metal electrode includes a current collector; a lithium metal layer on exposed portions of the current collector; an ionic diffusion layer on the lithium metal layer; and a porous electrical insulation layer. The porous electrical insulation layer includes an insulation layer disposed on the current collector and having at least one through hole that completely surrounds the lithium metal layer and the ionic diffusion layer; and an inhibition layer disposed on the insulation layer and having a plurality of second through holes. Lithium dendrites will mostly plate in the at least one through hole of the insulation layer and will not plate upwards due to the inhibition layer. Hence, the lithium dendrites will not penetrate through the electrical insulator so that safety of the lithium metal battery is greatly improved.

Abstract: The present invention relates to a separator comprising a coating layer and a battery using the same, the separator having improved adhesive force to an electrode, thereby minimizing the rate of thickness change. More specifically, the present invention relates to a separator having a coating layer on one or both surfaces of a base film, the coating layer comprising an acrylic-based copolymer having a glass transition temperature of less than or equal to 80° C. and an inorganic particle, so as to have improved adhesive force and heat resistance, thereby being applicable in electrochemical batteries of various sizes and having excellent thermal stability and dimensional stability.

Abstract: A flow battery includes a first liquid containing a first electrode mediator dissolved therein, a first electrode immersed in the first liquid, a first active material immersed in the first liquid, and a first circulation mechanism that circulates the first liquid between the first electrode and the first active material. The first electrode mediator includes a carbazole derivative, and the carbazole derivative has a substituent at positions 3, 6, and 9 of a carbazole skeleton thereof.

Abstract: A stretchable battery includes: a pouch; a metal barrier disposed in the pouch; and an electrode assembly disposed in the pouch and on the metal barrier, wherein the pouch and the electrode assembly each have a wavy shape including a plurality of peaks and valleys.

Abstract: A lithium metal electrode and its related lithium metal battery is disclosed in the present invention. The lithium metal electrode comprises a current collector, a lithium metal layer, an insulation frame, a porous electrical insulation layer and an ionic diffusion layer. The current collector has at least a well. The lithium metal layer is disposed on the bottom surface of the well. The insulation frame is disposed along the opening of the well. The insulation frame extends radially outward the opening to cover a top surface of the current collector partially and extends vertically toward the inner sidewall of the well. The lithium dendrites will mostly plate in the well and will not plate upwards due to the inhibition layer. Hence, the lithium dendrites will not penetrate through the electrical insulator so that the safety of the lithium metal battery can be improved greatly.

Abstract: A multi-layered battery separator for a lithium secondary battery includes a first layer of a dry processed membrane bonded to a second layer of a wet processed membrane. The first layer may be made of a polypropylene based resin. The second layer may be made of a polyethylene based resin. The separator may have more than two layers. The separator may have a ratio of TD/MD tensile strength in the range of about 1.5-3.0. The separator may have a thickness of about 35.0 microns or less. The separator may have a puncture strength of greater than about 630 gf. The separator may have a dielectric breakdown of at least about 2000V.

Abstract: The present invention relates to a separator for a secondary battery which is capable of improving a shut-down function of a cellulose-based multilayer separator physically having high strength. The separator for a secondary battery comprises a substrate formed of cellulose-based nanofibers and polyethylene nanoparticles; and a resin layer stacked on one surface or both surfaces of the substrate, the resin being formed from a polyolefin.

Abstract: A battery separator for a secondary lithium battery includes a microporous/porous membrane with a ceramic coating of one or more layers, a layer may include one or more particles having an average particle size ranging from 0.01 ?m to 5 ?m and/or binders that include poly (sodium acrylate-acrylamide-acrylonitrile) copolymer.

Abstract: The present invention provides a nonaqueous electrolyte secondary battery including a porous layer which includes an organic filler in which Na element, Al element, and/or K element are contained, a total amount of the Na element, the Al element, and the K element contained falling within a certain range. The nonaqueous electrolyte secondary battery porous layer allows the nonaqueous electrolyte secondary battery to have an excellent battery capacity recovery rate after storage at a constant-voltage charge at a high temperature.

Abstract: A method of fabricating a positive active material for a rechargeable sodium battery is provided. The method includes forming a metal hydroxide precursor including nickel, cobalt, and manganese, and fabricating a positive active material by mixing and firing the metal hydroxide precursor and a sodium source. A kind of the sodium source is changed depending on a content of nickel or manganese included in the metal hydroxide precursor.

Abstract: An adhesive layer disposed between a separator for a secondary battery and an electrode for a secondary battery, wherein the adhesive layer is obtained by bonding under pressure a layer containing a resin having a structural unit derived from an ?-olefin having 2 to 4 carbon atoms, and an occupancy area of the resin in the adhesive layer is 10 to 80%.

Abstract: An electrode assembly manufactured by a third method other than a stack folding method or a stack method, and an electrochemical device including thereof are disclosed. The electrode assembly includes at least one radical unit. The radical unit has a four-layered structure obtained by stacking a first electrode, a first separator, a second electrode, and a second separator one by one.

Abstract: Provided is a technique for capturing transition metal ions, such as cobalt ions, in a secondary battery that elute into an electrolysis solution from a positive electrode active material. A porous membrane for a lithium ion secondary battery contains non-conductive particles and a particulate polymer. The particulate polymer includes an aliphatic conjugated diene monomer unit in a proportion of greater than 85 mass %. The cobalt concentration in a film of 500 ?m in thickness and 12 mm in diameter, formed from the particulate polymer, after the film is immersed in a specific cobalt chloride solution for 5 days at 25° C. is at least 300 mass ppm.

Abstract: A zinc-air secondary battery includes a positive electrode, a negative electrode, a separation membrane interposed between the positive and negative electrodes, and an electrolyte accommodated between the positive and negative electrodes and submerging a part of the positive electrode. The separation membrane is a porous separation membrane having a plurality of through-holes, and the separation membrane is provided with through-holes. The sizes of the holes are smaller than the size of the potassium ions contained in the electrolyte. A plurality of adsorptive potassium ion particles are evenly attached on at least one side of the separation membrane to form an adsorptive potassium ion particle layer.

Abstract: Provided is a separator for power storage device having excellent tearing strength, denseness, and resistance performance, and a power storage device provided with the separator for power storage device. The present invention constitutes a separator for power storage device including beatable regenerated cellulose fibers, wherein a CSF value X [ml] and a tear index Y [mN·m2/g] are within the ranges satisfying the following Formulae. The present invention also constitutes a power storage device in which the separator for power storage device is used, and which is formed by interposing the separator between one pair of electrodes. 0?X?150??Formula 1: 10?Y?70??Formula 2: Y?0.

Abstract: The present disclosure relates to a case for a secondary battery and a secondary battery having the same. More specifically, it relates to a case for a secondary battery having a washer for detecting leakage with a structure improved so as to check leakage of an electrolyte and a secondary battery having the same. A lithium ion secondary battery according to the present disclosure provides an effect of easily checking the leakage of an electrolyte with naked eyes through the color change of a washer when a trace amount of the electrolyte leaks.

Abstract: A lithium ion battery may comprise a positive electrode, a negative electrode and a separator coated with a thin film of lithium metal, the thickness of the lithium being less than or equal to a thickness sufficient to compensate for the irreversible loss of lithium during the first cycle of the battery. Furthermore, there may be a ceramic layer on the separator between the separator and the lithium metal thin film. Yet furthermore, there may be a barrier layer between the ceramic layer and the lithium metal thin film, wherein the barrier layer blocks Li dendrite formation. Furthermore, the separator may have pores which may be filled with one or more of a lithium ion-conducting polymer, a binder soluble in a liquid electrolyte, and a lithium ion-conducting ceramic material. Methods of, and equipment for, fabricating such battery separators and also for fabricating components for lithium metal based batteries are described.

Abstract: A nonaqueous electrolyte secondary battery separator having a laminated body which is not easily curled is provided. The laminated body includes a porous base material containing a polyolefin-based resin as a main component and a porous layer which is disposed on at least one surface of the porous base material and which contains a polyvinylidene fluoride-based resin. The porous base material has a piercing strength of not less than 26.0 gf/g/m2. The polyvinylidene fluoride-based resin contains crystal form ? in an amount of not less than 36 mol % with respect to 100 mol % of a total amount of the crystal form ? and crystal form ? contained in the polyvinylidene fluoride-based resin.

Abstract: Implementations of the present disclosure generally relate to separators, high performance electrochemical devices, such as, batteries and capacitors, including the aforementioned separators, and methods for fabricating the same. In one implementation, a separator for a battery is provided. The separator comprises a substrate capable of conducting ions and at least one dielectric layer capable of conducting ions. The at least one dielectric layer at least partially covers the substrate and has a thickness of 1 nanometer to 2,000 nanometers.

Abstract: An energy storage device can include a first electrode, a second electrode and a separator between the first electrode and the second electrode wherein the first electrode or the second electrode includes elemental lithium metal and carbon particles. A method for fabricating an energy storage device can include forming a first electrode and a second electrode, and inserting a separator between the first electrode and the second electrode, where forming the first electrode or the second electrode can include combining elemental lithium metal and a plurality of carbon particles.

Abstract: A solar cell structure may provide a front surface that may include a front passivation layer and front anti-reflective layer. The solar cell structure may provide both contacts on a rear surface. In some cases, the rear surface may optionally provide passivation, doped, and/or transparent conductive oxide layers. The rear surface also provides a multilayer foil assembly (MFA). The MFA provides a first metal foil in electrical communication with doped regions of the rear surface of the substrate, such as base or emitter regions. The MFA may also provide a second metal foil that is spaced apart from the first metal foil by a dielectric layer. The metal foils and dielectric layers may include openings through the entirety of these layers, and these openings may be utilized to form contacts electrically coupled to the second metal foil, which is electrically isolated from the first metal foil.

Abstract: Provided are a separator for a lithium secondary battery in which an entire thickness of the separator and a ratio of a heat-resistant layer included in the separator satisfy specific ranges, respectively, and a battery including the same. The separator has significantly excellent heat resistance and mechanical strength, and it is possible to manufacture a high capacity and high output battery using the separator, thereby making it possible to significantly improve safety even in the high capacity and the high output battery.

Abstract: An electrode tab coated with an electrical insulating layer according to one aspect of the present disclosure, and a secondary battery comprising the same can provide further enhanced electrical insulating effect.

Abstract: According to one embodiment, an electrode composite is provided. The electrode composite includes a negative electrode active material-containing layer and an insulating particle layer. The negative electrode active material-containing layer includes negative electrode active material secondary particles having an average secondary particle size of from 1 ?m to 30 ?m. The insulating particle layer is provided on the negative electrode active material-containing layer. The insulating particle layer includes a first surface and a second surface opposed to the first surface. The first surface is in contact with the negative electrode active material-containing layer. The second surface has a surface roughness of 0.1 ?m or less.

Abstract: A separator for a secondary cell includes a porous polymer substrate having a first surface, a second surface opposing the first surface, and a plurality of pores connecting the first surface to the second surface; and heat-resistant coating layers formed on at least one of the first surface and the second surface of the porous polymer substrate and on internal surfaces of the pores using an atomic layer deposition process (ALD). Pores having a non-coated region are present in the internal surfaces of the pores.

Abstract: Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries.

Abstract: To provide a secondary battery porous membrane which is produced using a slurry for secondary battery porous membranes having excellent coatability and excellent dispersibility of insulating inorganic particles and is capable of improving the cycle characteristics of a secondary battery that is obtained using the secondary battery porous membrane, said secondary battery porous membrane having high flexibility and low water content and being capable of preventing particle fall-off. A slurry for secondary battery porous membranes of the present invention is characterized by containing: insulating inorganic particles, each of which has a surface functional group that is selected from the group consisting of an amino group, an epoxy group, a mercapto group and an isocyanate group; a binder which has a reactive group that is crosslinkable with the surface functional group; and a solvent.

Abstract: An electrochemical cell comprising a cathode and an anode residing within a casing, the anode being positioned distal of the cathode. The cathode having a cathode current collector having an angled configuration that encourages the cathode active material to move in an axial distal direction during cell discharge. The cathode current collector may be configured having at least one fold thereby dividing the current collector into at least two portions having an angle therebetween. The cathode current collector may comprise a wire having a helical configuration or the cathode current collector may comprise a post with a thread having a helical orientation about the post exterior. A preferred chemistry is a lithium/CFx activated with a nonaqueous electrolyte.

Abstract: A laminate that includes an active material layer including a plural of active material particles, a separator layered on the active material layer, and an organic electrolyte. The separator includes a first surface and a second surface opposed to the first surface, and includes particles containing an inorganic compound having lithium ion conductivity at 25° C. of 1×10?10 S/cm or more, and a ratio (L/Rmax) of a thickness L to a radius Rmax is greater than zero and less than or equal to five, where L and Rmax are defined in the application.

Abstract: Disclosed is a laminate for non-aqueous secondary battery which includes a water-soluble polymer-containing functional layer and an adhesive layer adjacently disposed on the functional layer, and which can suppress reductions in peel strength of a battery member including the laminate while allowing the functional layer to exert its expected function. The disclosed laminate includes a functional layer containing functional particles and a water-soluble polymer, and an adhesive layer adjacently disposed on the functional layer, wherein a film obtained by shaping of the water-soluble polymer has a water drop contact angle of 30° to 80°.

Abstract: There is provided a non-aqueous-secondary-battery separator formed of a composite membrane including: a porous base material containing a thermoplastic resin; and a heat-resistant porous layer provided on one or both surfaces of the porous base material and containing an organic binder and an inorganic filler, in which the tortuosity rate of the composite membrane is from 1.5 to 2.0.

Abstract: The present invention pertains to a process for manufacturing one or more fluoropolymer fibers, said process comprising the following steps: (i) providing a liquid composition [composition (C1)] comprising: —at least one fluoropolymer comprising at least one hydroxyl end group [polymer (FOH)L and —a liquid medium comprising at least one organic solvent [solvent (S)]; (ii) contacting the composition (C1) provided in step (i) with at least one metal compound [compound (M)] of formula (I) here below: X4?mAYm (I) wherein X is a hydrocarbon group, optionally comprising one or more functional groups, m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, and Y is a hydrolysable group selected from the group consisting of an alkoxy group, an acyloxy group and a hydroxyl group, thereby providing a liquid composition [composition (C2)]; (iii) submitting to at least partial hydrolysis and/or polycondensation the composition (C2) provided in step (ii) thereby providing a liquid co

Abstract: A composition for forming a porous heat-resistant layer of a separator, a separator, and an electrochemical battery, the composition including a monomer including a cross-linkable functional group, an oligomer including a cross-linkable functional group, a polymer including a cross-linkable functional group, or a mixture thereof; a solvent; an initiator; first inorganic particles having an average particle diameter (D50) X of about 300 nm to about 700 nm; and second inorganics particle having an average particle diameter (D50) of 0.1X to 0.4X, wherein a weight ratio of the first inorganic particles to the second inorganic particles in the composition is about 7:3 to about 8.5:1.5.

Abstract: An electrolyte including a block copolymer containing a co-continuous domain including an ion conductive phase and a structural phase, wherein the structural phase includes a polymer segment having a glass transition temperature that is equal to or lower than room temperature.

Abstract: There is provided a manufacturing method of an electrode assembly, the method including blanking a first electrode from a first base including a first coated region and a first uncoated region, blanking a second electrode from a second base including a second coated region and a second uncoated region, laminating a separator on the second electrode, cutting the laminated second electrode with the separator, and stacking the laminated second electrode and the first electrode.