Abstract: A separator for a rechargeable battery includes a porous substrate and a heat-resistance layer on at least one surface of the porous substrate. The heat-resistance layer includes a binder having a cross-linked structure, a sphere-shaped filler, and a plate-shaped filler, and the plate-shaped filler is included in a smaller amount than the sphere-shaped filler in the heat-resistance layer. A rechargeable battery includes the separator.

Abstract: A method for manufacturing, a secondary battery separator including a porous resin film in which pores have three-dimensionally ordered structure and are in mutual communication via through-holes. The method includes: uniformly dispersing spherical microparticles having narrow particle size distribution in a dispersion medium to prepare a microparticles-dispersed slurry; drying slurry to obtain a spherical microparticles-dispersed film; heat-treating the film to form a microparticles-resin film in which the microparticles are regularly arrayed in three-dimensions in a resin matrix; and contacting the microparticles-resin film with an organic acid, water, an alkaline solution or an inorganic acid other than hydrofluoric acid to dissolve and remove the microparticles, or heating the microparticles-resin film to remove the microparticles, to form pores which are in mutual communication and regularly arrayed in the resin matrix.

Abstract: A non-aqueous electrolyte secondary battery includes a power generating element having a positive electrode having a positive electrode active material layer containing lithium-nickel-manganese-cobalt composite oxide on a surface of a current collector, an electrolyte layer, and a negative electrode. At least one of the following conditions (1) to (4) is satisfied. (1) A value obtained by dividing a direct current resistance of the battery by a heat resistance in a plane direction of the battery is 0.055 or more; (2) a value obtained by dividing a direct current resistance of the battery by a heat capacity of the battery is 3.080×10?6 or more; (3) a value obtained by dividing a battery capacity by a heat resistance in a plane direction of the battery is 880 or more; and (4) a value obtained by dividing a battery capacity by a heat capacity of the battery is 0.05000 or more.

Abstract: Provided is a nonaqueous electrolyte secondary battery separator excellent in voltage-withstanding property. This nonaqueous electrolyte secondary battery separator has (i) a film thickness of not more than 20 ?m, (ii) a peeling strength, measured by a blocking test, of not less than 0.2 N, and (iii) a puncture strength that changes through the blocking test by not more than 15%. The blocking test is carried out by (i) sandwiching, by a jig of 100 mm×100 mm, two 80 mm×80 mm pieces of a separator, (ii) allowing the two 80 mm×80 mm pieces to rest for 30 minutes under a load of 3.5 kg at a temperature of 133° C.±° C., (iii) removing the load, (iv) cooling the two 80 mm×80 mm pieces to room temperature, (vi) cutting out a specimen of 27 mm×80 mm from the two 80 mm×80 mm pieces, and then (vi) measuring a peeling strength of the specimen at 100 mm/min.

Abstract: Provided herein a method of preparing electrode assemblies for lithium-ion batteries. The method disclosed herein comprises a step of pre-drying separator in the battery manufacturing process before the stacking step, thereby significantly lowering the water content of the separator. Therefore, separators can be used to prepare electrode assemblies regardless of conditions under which they are stored or transported. In addition, the peeling strength between the porous base material and protective porous layer is largely unaffected by the drying process disclosed herein.

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: An object of the present invention is to provide a structure for a non-aqueous electrolyte secondary battery that can be manufactured without going through a complicated process such as passing through a poor solvent. The structure for a non-aqueous electrolyte secondary battery of the present invention comprises a positive electrode, a separator, and a negative electrode, the structure comprising an intermediate layer formed between the positive electrode and the separator and/or between the negative electrode and the separator and including vinylidene fluoride polymer particles constituting 60 to 100 parts by mass per 100 parts by mass of raw materials that constitute the intermediate layer.

Abstract: Provided is a separator for a non-aqueous secondary battery, including: a porous substrate, and a heat resistant porous layer that is provided on one side or both sides of the porous substrate, that is an aggregate of resin particles and an inorganic filler, and that satisfies the following expression (1). In expression (1), Vf is a volume proportion (% by volume) of the inorganic filler in the heat resistant porous layer, and CPVC is a critical pigment volume concentration (% by volume) of the inorganic filler. Also provided is a separator for a non-aqueous secondary battery, including: a porous substrate, a heat resistant porous layer that is provided on one side or both sides of the porous substrate, that includes a resin and an filler, and that satisfies the following expression (2), and an adhesive porous layer that is provided on both sides of a stacked body of the porous substrate and the heat resistant porous layer, and that includes an adhesive resin.

Abstract: Tensile strength in a width direction and a longitudinal direction is improved without damaging a ventilation characteristic. A perforated film is a perforated film provided with holes, each of the holes is arranged at an intersection of a plurality of virtual lines extending along a direction and a plurality of virtual lines extending along a direction, and the direction is different from the width direction and the longitudinal direction. The direction and the direction may be both inclined at an angle larger than 30° and smaller than 60° to the width direction.

Abstract: Methods for producing a battery separator are provided. The methods include applying a liquid precursor material to a substrate to generate a coating layer on the substrate. The liquid precursor material includes a polymer, and a first solvent. The methods also include precipitating the polymer from the liquid precursor material in the coating layer to form a polymer membrane, and drying the polymer membrane to generate a battery separator.

Abstract: Provided are a separator having high heat resistance, a manufacturing method thereof and a secondary battery including the separator, which provides excellent dispersibility and reduced thermal shrinkage. The separator includes separator includes a porous base layer, and a coating layer formed on at least one surface of the base layer, wherein the coating layer includes inorganic particles and a binder, and the binder includes one selected from the group consisting of polyacrylic acid (PAA), polyacrylate or a mixture of polyacrylic acid (PAA) and polyacrylate, having a molecular weight of 100,000 to 1,000,000, as a first binder.

Abstract: A solid-state lithium battery cell comprises a support, and a plurality of electrodes on the support, the electrodes comprising a cathode and an anode. An electrolyte lying between the cathode and anode comprises an oxygen-rich electrolyte layer. In another version, a multilayer electrolyte comprises an oxygen-rich electrolyte layer and an oxygen-deficient electrolyte layer.

Abstract: A formed, secondary electrochemical cell includes at least one positive electrode containing a metal compound capable of reversibly incorporating and releasing lithium in the form of ions, at least one negative electrode containing a carbon compound capable of reversibly incorporating or releasing lithium in the form of ions, and/or a metal and/or semi-metal which can be alloyed with lithium, an electrolyte via which lithium ions can migrate between the at least one positive electrode and the at least one negative electrode, and mobile lithium available for incorporation or releasing processes in the electrodes, wherein capacity of the at least one negative electrode for taking up lithium is higher than that of the at least one positive electrode, the at least one negative electrode has a higher capacity than required for taking up the entire mobile lithium contained in the cell, and the mobile lithium is contained in the cell in an amount which exceeds the capacity of the at least one positive electrode for

Abstract: A battery capable of improving the energy density and improving the battery characteristics such as cycle characteristics and high temperature storage characteristics. A cathode and an anode are oppositely arranged with a separator in between. The open circuit voltage in full charge is in the range from 4.25 V to 6.00 V. The separator has a base material layer and a surface layer. The surface layer opposed to the cathode is formed from at least one from the group consisting of polyvinylidene fluoride, polytetrafluoroethylene, polypropylene, and aramid.

Abstract: A sodium-conductive solid-state electrolyte material includes a compound of the composition Na10MP2S12, wherein M is selected from Ge, Si, and Sn. The material may have a conductivity of at least 1.0×10?5 S/cm at a temperature of about 300K and may have a tetragonal microstructure, e.g., a skewed P1 crystallographic structure. Also provided are an electrochemical cell that includes the sodium-conductive solid-state electrolyte material and a method for producing the sodium-conductive solid electrolyte material via controlled thermal processing parameters.

Abstract: Set forth herein are pellets, thin films, and monoliths of lithium-stuffed garnet electrolytes having engineered surfaces. These engineered surfaces have a list of advantageous properties including, but not limited to, low surface area resistance, high Li+ ion conductivity, low tendency for lithium dendrites to form within or thereupon when the electrolytes are used in an electrochemical cell. Other advantages include voltage stability and long cycle life when used in electrochemical cells as a separator or a membrane between the positive and negative electrodes. Also set forth herein are methods of making these electrolytes including, but not limited to, methods of annealing these electrolytes under controlled atmosphere conditions. Set forth herein, additionally, are methods of using these electrolytes in electrochemical cells and devices. The instant disclosure further includes electrochemical cells which incorporate the lithium-stuffed garnet electrolytes set forth herein.

Abstract: A bipolar battery plate is utilized for production of a bipolar battery. The bipolar battery plate includes a frame, a substrate, first and second lead layers, and positive and negative active materials. The substrate includes insulative plastic with conductive particles homogeneously dispersed throughout the insulative plastic and exposed along surface of the substrate, the substrate positioned within the frame. The first lead layer is positioned on one side of the substrate, while the second lead layer is positioned on another side of the substrate. The first and second lead layer are electrically connected to each through the conductive particles. The positive active material is positioned on a surface of the first lead layer, and the negative active material positioned on a surface of the second lead layer.

Abstract: A conveying apparatus for a separator of an electrical device alternately laminates a first electrode and a second electrode of different polarity from the first electrode, with a separator interposed therebetween to form a laminated body for conveyance. The separator includes a melt material representing a substrate and a heat-resistant material laminated on one surface of the melt material and having a higher melting point than the melt material. The separator conveying apparatus includes a drive member which makes contact with the separator and conveys the separator; and a pressure member which, while urging the drive member via the separator, is driven by the drive member. The drive member makes contact with the melt material portion of the separator. With this separator conveying apparatus, it is possible to maintain constant feed size or dimension of the separator assembly.

Abstract: Achieved is a nickel-cobalt-manganese composite hydroxide which is excellent in reactivity with a lithium compound, and excellent thermal stability and battery characteristics. The nickel-cobalt-manganese composite hydroxide is represented by a general formula: Ni1-x-y-zCoxMnyMz (OH)2 (0<x??, 0<y??, 0?z?0.1, M represents one or more elements selected from Mg, Al, Ca, Ti, V, Cr, Zr, Nb, Mo, and W), to serve as a precursor for a positive electrode active material of a non-aqueous electrolyte secondary battery, and the nickel-cobalt-manganese composite hydroxide has a specific surface area of 3.0 to 11.0 m2/g as measured by a nitrogen adsorption BET method, and a ratio I(101)/I(100) of peak intensity I(101) of plane (101) to peak intensity I(100) of plane (100) less than 0.300 through an X-ray diffraction measurement.

Abstract: An alumina slurry containing alumina dispersed in a dispersion medium, the alumina having an average primary particle diameter of 0.1 ?m or more and 1.0 ?m or less, the alumina satisfying the following condition (1), and the slurry having a content of the alumina of 30% by mass or more and 70% by mass or less and a content of water in the dispersion medium of 50% by mass or more: condition (1): in relationship of a pore diameter r1 (?) and a pore volume Dv1 (mL/g) of the alumina measured by a nitrogen desorption method based on JIS Z8831-2 (2010), the pore volume Dv1(80) at r1=80 and the maximum value Dv1(M) of Dv1 in a range 20?r1?80 satisfy Dv1(M)>Dv1(80).

Abstract: A protected anode including: an anode including lithium or capable of reversibly incorporating lithium ions; and a lithium ion-conductive protective layer on the anode and including a ceramic composite represented by Formula 1: Li1+aAlbGe2?cMdP3+eO12+f??Formula 1 wherein M is at least one element selected from titanium (Ti), zirconium (Zr), and germanium (Ge), 0?a?1, 0?b?1, 0?c?1, 0?d?0.5, 0?e?0.1, and 0?f?1.

Abstract: A multilayer porous membrane comprising a porous membrane containing a polyolefin resin as a main component; and a porous layer containing an inorganic filler and a resin binder and laminated on at least one surface of the porous membrane; wherein the porous membrane has an average pore size d=0.035 to 0.060 ?m, a tortuosity ?a=1.1 to 1.7, and the number B of pores=100 to 500 pores/?m2, which are calculated by a gas-liquid method, and the porous membrane has a membrane thickness L=5 to 22 ?m.

Abstract: Embodiments related to electroactive compounds, their methods of manufacture, and use are described. In one embodiment, an electroactive compound may include Na(FeaX1-a)O2. X includes at least one of Ti, V, Cr, Mn, Co, Ni, and a is greater than 0 and less than or equal to 0.4. In another embodiment, an electroactive compound may include Na(MnwFexCoyNiz)O2, where w, x, y, and z are greater than 0. Further, a sum of w, x, y, and z is equal to 1 in some cases.

Abstract: A battery assembly is provided. The assembly includes a battery containment apparatus including a chassis base and divider sheets coupled to the chassis base, wherein the divider sheets are spaced from each other such that a battery cell slot is defined between adjacent sheets. The apparatus further includes a compression plate assembly including first compression and second compression plates coupled to a divider sheet at opposing ends of the apparatus, and a tensioning member coupled between the first and second compression plates. A battery cell is positioned within each battery cell slot defining a plurality of battery cells, and the first and second compression plates compressively hold the battery cells between the divider sheets. At least one of the chassis base and the compression plate assembly are formed from a thermoplastic material.

Abstract: The disclosed binder composition for the positive electrode of a lithium ion secondary battery includes a binder and an organic dispersion medium, a weight-average molecular weight of the binder being from 100,000 to 2,000,000, and the binder containing 10% to 35% by mass of an ethylenically unsaturated monomer unit containing an acid group, and includes 0.6 to 1.5 equivalents of lithium with respect to the acid group. The disclosed slurry composition for the positive electrode of a lithium ion secondary battery includes this binder composition, a positive electrode active material, and a conductive material.

Abstract: A lithium ion battery separator includes a porous film of a polymeric chelating agent. The polymeric chelating agent includes a poly(undecylenyl-macrocycle), where the macrocycle is a chelating agent. A positive electrode includes a structure and a coating formed on a surface of the structure. The structure includes a lithium transition metal based active material, a binder, and a conductive carbon; and the coating includes a poly(undecylenyl-macrocycle), where the macrocycle is a chelating agent. The separator and/or positive electrode are suitable for use in a lithium ion battery.

Abstract: A battery according to the invention includes, as a separator, a first separator and a second separator having mutually different characteristics. The first separator and the second separator are disposed inside an electrode assembly in a state where the separators are not in contact with each other in a stacking direction of the electrode assembly.

Abstract: A porous membrane is provided having a compound having an ionic group and a hydrophobic group, a metal oxide, and a binder resin. The content of the compound having an ionic group and a hydrophobic group is 0.2 to 2 parts by mass relative to 100 parts by mass of the metal oxide.

Abstract: Disclosed is a separator for an electrochemical device including a porous polymer film, and a porous coating layer including at least one type of particles of inorganic particles and organic particles and binder polymer, the porous coating layer formed on one surface or both surfaces of the porous polymer film, wherein the porous polymer film has a structure in which multiple fibrils arranged parallel to the surface of the film are stacked in layers, and a diameter of the fibril disposed at the side of one surface of the film where the porous coating layer is formed is smaller than a diameter of the fibril disposed at a central part in a thickness-wise direction of the film, and an electrochemical device comprising the same.

Abstract: The present invention provides a separator having a porous substrate; and a porous coating layer formed on one surface of the porous substrate and comprising a mixture of inorganic particles and a binder polymer, which has a value of a porosity×an air permeability per thickness in the range of 5 to 40, the porosity and the air permeability per thickness. The separator having a porous coating layer according to the present invention has a porosity which is controlled depending on the air permeability of the porous substrate, and thus exhibit superior ionic conductivity as well as good mechanical properties, thereby contributing to improve the performance and safety of an electrochemical device.

Abstract: The invention relates to novel materials of the formula: A1-?M1VM2WM3XM4YM5ZO2 wherein A is one or more alkali metals comprising sodium and/or potassium either alone or in a mixture with lithium as a minor constituent; M1 is nickel in oxidation state +2; M2 comprises a metal in oxidation state +4 selected from one or more of manganese, titanium and zirconium; M3 comprises a metal in oxidation state +2, selected from one or more of magnesium, calcium, copper, zinc and cobalt; M4 comprises a metal in oxidation state +4, selected from one or more of titanium, manganese and zirconium; M5 comprises a metal in oxidation state +3, selected from one or more of aluminum, iron, cobalt, molybdenum, chromium, vanadium, scandium and yttrium; wherein 0???0.1 V is in the range 0<V<0.5; W is in the range 0<W?0.5; X is in the range 0?X<0.5; Y is in the range 0?Y<0.5; Z is ?0; and further wherein V+W+X+Y+Z=1. Such materials are useful, for example, as electrode materials in sodium ion battery applications.

Abstract: The present invention provides a separator drastically reducing the short-circuit between electrodes and having satisfactory ionic conductivity on the basis of the use of inorganic materials. The separator 23 has a substrate 23a including a layer formed by using an inorganic material so as to have a plurality of openings, and an inorganic fiber layer 23b laminated on one surface or both surfaces of the substrate 23a so as to cover the openings of the substrate 23a without blocking the openings of the substrate 23a. The thickness of the separator 23 is 100 ?m or less.

Abstract: Provided is a non-aqueous-secondary-battery separator including: a microporous membrane; and an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and includes a fibrillar polyvinylidene fluoride resin, in which an average hole diameter acquired from the specific surface area of the microporous membrane is greater than 90 nm and equal to or smaller than 250 nm, peeling strength between the microporous membrane and the adhesive porous layer is equal to or greater than 0.10 N/cm, and a fibrillar diameter acquired from the specific surface area of the adhesive porous layer is from 50 nm to 70 nm.

Abstract: To provide a composite porous film in which thermal shrinkage is satisfactorily suppressed even when temperature exceeds a melting temperature of a polyolefin resin, adhesion between a microporous membrane and a heat-resistant layer is improved, and dropout of an inorganic filler is suppressed. The composite porous film is composed of the heat-resistant layer formed of the inorganic filler and a binder, and the microporous membrane formed of the polyolefin resin, and the composite porous film having a primary particle size of the inorganic filler in the range of 5 nanometers to 100 nanometers.

Abstract: A multilayer microporous membrane including polymer and having a shutdown temperature of ?130.5° C. and a storage stability of 0.3V or less.

Abstract: Provided is a nonaqueous electrolyte secondary battery laminated separator including a laminated porous film including a porous film and a porous layer. The piercing strength (S) of the laminated porous film satisfies Formula (1): 2 gf?Sp?S?25 gf, and the piercing strength (Sp) of the porous film after removal of the porous layer from the laminated porous film satisfies Formula (2): 300 gf?S?400 gf. The nonaqueous electrolyte secondary battery laminated separator is excellent in output characteristic, shutdown characteristic, and piercing strength.

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

Abstract: The present invention relates to an active cathode material of the general formula (I): MxN iaM1bM2cO2 (I) in which the variables are each defined as follows: M is an alkali metal, M1 is V, Cr, Mn, Fe or Co, M2 is Ge, Sn, Ti or Zr, x is in the range from 0.5 to 0.8, a is in the range from 0.1 to 0.4, b is in the range from 0.05 to 0.6, c is in the range from 0.05 to 0.6, wherein a+b+c=1. The present invention further relates to an electrode material comprising said active cathode material, to electrodes produced from or using said electrode material and to a rechargeable electrochemical cell comprising at least one electrode. The present invention further relates to a process for preparing said active cathode material of the general formula (I).

Abstract: The present invention provides a non-aqueous electrolyte secondary battery having an electrode body formed by stacking a positive electrode, a separator and a negative electrode and a non-aqueous electrolyte. The separator has a separator substrate made and a first porous heat resistance layer formed on a surface of the substrate on a side facing the positive electrode. A surface of the negative electrode on a side facing the separator is formed by a second porous heat resistance layer. The first and second porous heat resistance layers satisfy: (1) an average thickness of the first porous heat resistance layer is greater than that of the second porous heat resistance layer; (2) an average particle diameter of an inorganic filler contained in the first porous heat resistance layer is greater than that of an inorganic filler contained in the second porous heat resistance layer.

Abstract: An organic-inorganic composite layer for a lithium battery includes an organic polymer and a plurality of composite inorganic particles. The weight ratio of the organic polymer to the composite inorganic particles is 10:90 to 95:5, wherein the composite inorganic particles have at least two structural configurations stacked in staggered configuration.

Abstract: Provided is an electrode assembly, and more particularly, an electrode assembly having a structure wound in a state, in which a plurality of unit cells having a stacking structure is disposed on a long sheet type separation film, and including the unit cells having two or more types of configurations of electrode materials, wherein a separator stacked on the unit cell having a stacking structure has a coating material coated on both sides thereof and the long sheet type separation film has a coating material coated on one side thereof. According to the present invention, an electrode assembly improving processability of preparation of a battery while reducing initial resistance during the preparation of the battery as well as having battery lifetime equivalent to that of a conventional battery and a lithium secondary battery including the electrode assembly may be provided.

Abstract: Provided is a separator for a nonaqueous electrolyte battery including a composite membrane. The composite membrane includes a porous substrate that contains a thermoplastic resin and an adhesive porous layer that is provided on at least one side of the porous substrate and contains an adhesive resin. The difference between the Gurley number of the porous substrate and the Gurley number of the composite membrane is 75 sec/100 cc or less. The difference between the tortuosity of the porous substrate and the tortuosity of the composite membrane is 0.30 or less.

Abstract: An apparatus includes an electrochemical half-cell comprising: an electrolyte, an anode; and an ionomeric barrier positioned between the electrolyte and the anode. The anode may comprise a multi-electron vanadium phosphorous alloy, such as VPx, wherein x is 1-5. The electrochemical half-cell is configured to oxidize the vanadium and phosphorous alloy to release electrons. A method of mitigating corrosion in an electrochemical cell includes disposing an ionomeric barrier in a path of electrolyte or ion flow to an anode and mitigating anion accumulation on the surface of the anode.

Abstract: The invention relates to a process for producing a separator comprising the steps of: providing a sheetlike porous substrate, a solvent, ceramic particles and an adhesion promoter; preparing a slip by mixing the solvent, the adhesion promoter and the ceramic particles; coating the substrate with the slip and thermally drying the coated substrate to obtain the separator. The problem addressed is that of specifying a process useful for producing separators having a higher ceramic content. The problem is solved when the solvent used is a mixture of water and at least one organic component; the adhesion promoter used is a mixture of silanes and at least one thermally crosslinkable acrylic polymer; the slip is admixed with a carboxylic acid preparation and also with a defoamer component free from silicone oil.

Abstract: The nonaqueous electrolyte secondary battery of the present invention has a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte solution. The battery further has a porous heat-resistant layer provided between the separator and at least one of the positive electrode and the negative electrode, wherein the porous heat-resistant layer includes an inorganic filler and a binder. The inorganic filler included in the porous heat-resistant layer has a particle size distribution with two peaks, which are a first peak (P1) at a relatively small particle diameter and a second peak (P2) at a relatively large particle diameter. When the particle diameter of the first peak (P1) is D1 be and the particle diameter of the second peak (P2) is D2 being, the peak particle diameter ratio D1/D2 satisfies the condition 0.2?D1/D2?0.7.

Abstract: A negative electrode for a secondary battery according to the present invention has a collector and a negative electrode active material layer formed on a surface of the collector and containing negative electrode active material particles. In the negative electrode active material layer, an insulating material is arranged between the negative electrode active material particles so as not to develop conductivity by a percolation path throughout the negative electrode active material layer. It is possible in this configuration to effectively prevent the occurrence of a short-circuit current due to an internal short circuit and the generation of heat due to such short-circuit current flow in the secondary battery while securing the battery performance of the secondary battery.

Abstract: Technologies are generally described for composite membranes which may include a porous graphene layer in contact with a porous support substrate. In various examples, a surface of the porous support substrate may include at least one of: a thermo-formed polymer characterized by a glass transition temperature, a woven fibrous membrane, and/or a nonwoven fibrous membrane. Examples of the composite membranes permit the use of highly porous woven or nonwoven fibrous support membranes instead of intermediate porous membrane supports. In several examples, the composite membranes may include porous graphene layers directly laminated onto the fibrous membranes via the thermo-formed polymers. The described composite membranes may be useful for separations, for example, of gases, liquids and solutions.

Abstract: Provided is a lithium battery including a first pouch film, a first anode part on the first pouch film, a second cathode part on the first anode part, a polymer insulating film on the second cathode part, the polymer insulating film including a disk which is configured to penetrate the polymer insulating film, a second anode part on the polymer insulating film, a first cathode part on the second anode part, and a second pouch film on the first cathode part. Herein, the second cathode part is electrically connected to the second anode part through the disk.

Abstract: According to one embodiment, there is provided a secondary battery. This secondary battery includes an electrode and an organic-fiber layer. The electrode includes a current collector including an edge part, an active material-containing layer including an end part supported on the edge part, and a current-collecting tab including a surface a part of which is adjacent to the edge part. The organic-fiber layer is bonded with the end part of the active material-containing layer with maximum thickness and with the part of the surface of the current-collecting tab.

Abstract: A multilayer porous membrane comprising a porous membrane containing a polyolefin resin as a main component; and a porous layer containing an inorganic filler and a resin binder and laminated on at least one surface of the porous membrane; wherein the porous membrane has an average pore size d=0.035 to 0.060 ?m, a tortuosity ?a=1.1 to 1.7, and the number B of pores=100 to 500 pores/?m2, which are calculated by a gas-liquid method, and the porous membrane has a membrane thickness L=5 to 22 ?m.