Abstract: It is an object of the present invention to provide an electrochemical device having an electrolytic solution having high current density and high oxidation resistance, as well as high safety, where dissolution and deposition of magnesium progress repeatedly and stably. The present invention relates to the electrolytic solution for an electrochemical device comprising (1) the supporting electrolyte composed of a magnesium salt and (2) at least one or more kinds of the compound represented by the following general formula [2], as well as the electrochemical device comprising said electrolytic solution, a positive electrode, a negative electrode and a separator.

Abstract: The invention relates to an electrolyte, comprising at least one lithium salt, a solvent, and at least one compound according to general formula (1). The invention further relates to lithium-based energy stores comprising such an electrolyte.

Abstract: A lithium ion battery is provided which contains a cathode, an anode, an electrolyte and a separator, wherein the anode employs polythiocyanogen as an active material.

Abstract: Novel fluorinated cyclic carbonate compounds are described. These compounds may be useful as non-aqueous electrolyte solvents, specialty solvents, and starting materials and intermediates for synthesis of dyes, agricultural chemicals, and pharmaceuticals.

Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same, wherein the electrolyte comprises an organic solvent and an electrolyte additive, represented by chemical formula 1 and mixed lithium salts in the organic solvent so that room and high temperature life-time properties of the battery can be improved. Said chemical 1 is defined in the specification.

Abstract: A negative electrode for a lithium ion secondary battery includes a negative electrode core member and a negative electrode mixture layer adhering to the negative electrode core member. The negative electrode mixture layer includes active material particles, a cellulose ether compound, and rubber particles. The cellulose ether compound has a degree of etherification of 0.25 or more and 0.7 or less and an average degree of polymerization of 20 or more and 1200 or less. The negative electrode mixture layer contains remaining particles including a water-insoluble portion of the cellulose ether compound and having a mean particle size of 1 ?m or more and 75 ?m or less. The bonding strength between the active material particles is 98 N/cm2 or more.

Abstract: An anode and a battery, which have a high capacity and can improve battery characteristics such as large current discharge characteristics and low temperature discharge characteristics are provided. An anode has an anode current collector and an anode active material layer provided on the anode current collector. The density of the anode active material layer is in the range from 1.5 g/cm3 to 1.8 g/cm3. Further, the anode active material layer contains a granulated graphite material which is obtained by granulating a flat graphite particle in nodular shape and mesocarbon microbeads. Thereby, the granulated graphite material is prevented from being destroyed, and diffusion path of lithium ions is secured.

Abstract: A lithium salt is disclosed. The lithium salt includes a lithium ion and an anion represented by formula (I), wherein R1 to R5 are independently selected from hydrogen atom, cyano group, fluorine atom, and C1-C5 alkyl group, in which the C1-C5 alkyl group is substituted with at least one fluorine atom. The present invention further provides an electrolyte solution and a lithium battery containing the lithium salt to enable a high conductivity of the battery at a high temperature.

Abstract: The invention relates to a method for preparing a polyacrylonitrile-sulfur composite material, in which, polyacrylonitrile is converted to cyclized polyacrylonitrile, and the cyclized polyacrylonitrile is reacted with sulfur to form a polyacrylonitrile-sulfur composite material. By a separation of the preparation method into two partial reactions, the reaction conditions are advantageously able to be optimized for the respective reactions and a cathode material is able to be provided for alkali-sulfur cells with improved electrochemical properties. In addition, the invention relates to a polyacrylonitrile-sulfur composite material, a cathode material, an alkali-sulfur cell or an alkali-sulfur battery as well as to an energy store.

Abstract: Non-aqueous electrolyte solutions capable of protecting negative electrode materials such as lithium metal and carbonaceous materials in energy storage electrochemical cells (e.g., lithium metal batteries, lithium ion batteries and supercapacitors) include an electrolyte salt, a non-aqueous electrolyte solvent mixture, an unsaturated organic compound 4-methylene-1,3-dioxolan-2-one or 4,5-dimethylene-1,3-dioxolan-2-one, and other optional additives. The 1,3-dioxolan-2-ones help to form a good solid electrolyte interface on the negative electrode surface.

Abstract: An electrolytic solution and a battery capable of improving high temperature characteristics are provided. A separator (23) is impregnated with an electrolytic solution. The electrolytic solution includes a solvent including 4,5-difluoro-1,3-dioxolane-2-one. The content of 4,5-difluoro-1,3-dioxolane-2-one is preferably within a range from 5 wt % to 50 wt %, or in the case where 4,5-difluoro-1,3-dioxolane-2-one is mixed and used with 4-fluoro-1,3-dioxolane-2-one, the content of 4,5-difluoro-1,3-dioxolane-2-one is preferably within a range from 5 vol ppm to 2000 vol ppm.

Abstract: The battery includes an electrolyte activating one or more cathodes and one or more anodes. The electrolyte includes one or more salts in a solvent. The solvent includes one or more organic solvents and one or more silanes and/or one or more siloxanes.

Abstract: A lithium ion battery containing conducting materials comprises a positive electrode, a negative electrode, a separator, an electrolyte, adhesives and sealing materials. The conducting materials in the positive electrode comprise metal carbides, metal borides or metal nitrides. The conducting materials in the negative electrode comprise metal carbides, metal borides or metal nitrides. The metal carbide is titanium carbonitride, tungsten carbide or titanium carbide, vanadium carbide, tantalum carbide, and eutectic of tungsten carbide and titanium carbide. The metal boride is molybdenum boride, tungsten boride or vanadium boride. The metal nitride is titanium nitride, tungsten nitride or tantalum nitride. The conducting materials in the positive electrode may also comprise powdered metals. The conducting materials in the negative electrode comprise powdered metals. The powdered metal is nickel powder, copper powder or chromium powder.

Abstract: A rechargeable lithium battery and a method of preparing the same are described. The rechargeable lithium battery includes a positive electrode including a positive active material; a negative electrode including a negative active material; and a liquid electrolyte including a lithium salt and a non-aqueous organic solvent. A separator is interposed between the negative electrode and positive electrode and includes a support. A fluoro-based polymer layer is positioned on both sides of the support. The positive electrode includes the positive active material in an amount from about 30 to about 70 mg/cm2.

Abstract: A redox shuttle is provided to prevent overcharge of batteries and/or shuttle current in batteries including high voltage batteries, such as high voltage lithium ion (Li-ion) batteries. An exemplary redox shuttle includes a methylated closo-monocarborate anion.

Abstract: The invention relates to a lithium/sulphur accumulator including at least one unit cell including: a negative electrode; an electrode separator comprising a material soaked with electrolyte, said material comprising at least one nonwoven and having a porosity in the range from 50 to 96%, and a thickness in the range from 50 to 200 micrometers; a positive electrode; and wherein said electrolyte is introduced by an excess quantity, and comprises at least one lithium salt, and the excess quantity of electrolyte amounting to from 20 to 200% of the quantity of electrolyte ensuring the wetting of the electrodes and of the separator.

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

Abstract: To provide with high productivity a non-aqueous electrolyte secondary battery having high capacity and superior low temperature characteristics. The present invention is a non-aqueous electrolyte secondary battery including a positive electrode and a non-aqueous electrolyte containing a non-aqueous solvent, the non-aqueous electrolyte secondary battery characterized in that the non-aqueous solvent includes 30 to 70 vol % ethylene carbonate at 25° C. and 1 atm, the non-aqueous electrolyte includes a total of 0.01 to 0.10 mol/L lithium difluorophosphate and/or lithium monofluorophosphate, and the packing density of the positive electrode active material layer is from 2.0 to 2.8 g/ml.

Abstract: Use of an electrolyte for an electrochemical cell and a method for manufacturing an electrochemical cell comprising such an electrolyte. The electrolyte comprises at least one conductive salt comprising lithium ions, at least one solvent and at least one wetting agent. The electrochemical cell comprises at least one anode, at least one cathode and at least one separator arranged between the at least one anode and the at least one cathode. The electrolyte may be filled between the at least one anode and the at least one cathode.

Abstract: The objective of the present invention is to prevent deterioration and expanding of anode active material and to improve charge-discharge cycle characteristics in a non-aqueous electrolyte secondary battery comprising an anode of which current collector has thereon a thin layer of an anode active material containing a metal. To solve this problem, in a non-aqueous electrolyte secondary battery wherein a thin layer of anode active material containing a metal which absorbs and discharges lithium is formed on a current collector and the thin layer of the anode active material is divided into columns by a gap formed along the thickness thereof, a compound represented by the following formula is contained in the non-aqueous electrolyte. A-N?C?O In the above formula, A represents an element or a group other than hydrogen.

Abstract: A secondary battery which includes a positive electrode and a negative electrode, wherein the negative electrode has a negative electrode collector and a negative electrode active material layer, and the negative electrode collector has a base material which is formed of aluminum foil and an resin film which has a thickness of 0.01 to 5 ?m and does not allow a nonaqueous electrolyte to permeate therethrough.

Abstract: The present invention relates to sulfur-carbon composite materials comprising (A) at least one carbon composite material comprising (a) a carbonization product of at least one carbonaceous starting material, incorporating (aa) particles of at least one electrically conductive additive, the particles having an aspect ratio of at least 10, and (B) elemental sulfur. In addition, the present invention also relates to a process for producing inventive sulfur-carbon composite materials, to cathode materials for electrochemical cells comprising inventive sulfur-carbon composite materials, to corresponding electrochemical cells and to the use of carbon composite materials for production of electrochemical cells.

Abstract: A battery capable of improving the cycle characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The electrolytic solution contains an ionic compound such as (2,2-difluoromalonate oxalate)lithium borate and [bis(3,3,3-trifluoromethyl)glycolate oxalate]lithium borate as an electrolyte salt. In the ionic compound, an anion has an asymmetric structure, and a ligand having an oxygen chelate structure in the anion has a halogen as an element. In the battery, the chemical stability of the electrolytic solution is improved, compared to a battery in which the electrolytic solution contains bis(oxalate)lithium borate or the like as an electrolyte salt.

Abstract: To provide a high-capacity non-aqueous electrolyte secondary battery having superior cycle properties and safety. The present invention is a non-aqueous electrolyte secondary battery including electrode cores and a non-aqueous electrolyte containing a non-aqueous solvent, the positive electrode having a positive electrode active material layer formed on the positive electrode core, and the negative electrode having a negative electrode active material layer formed on the negative electrode core. In this non-aqueous electrolyte secondary battery, the non-aqueous solvent includes 25 to 40 vol % ethylene carbonate at 25° C.

Abstract: A nonaqueous electrolyte solution for a secondary battery, the nonaqueous electrolyte solution containing an electrolyte, a solvent, and an additive, in which the additive contains a compound represented by formula (1) below, and the content of the compound is 0.01 to 10 parts by mass relative to 100 parts by mass of the total of the solvent. A nonaqueous electrolyte secondary battery employing the nonaqueous electrolyte solution is also disclosed. wherein R1 represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, or an acetoxy group, and R2 represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, or a vinyl group.

Abstract: A nonaqueous electrolyte solution for a secondary battery, the nonaqueous electrolyte solution containing an electrolyte, a solvent, and an additive, in which the additive contains a compound represented by formula (1) below, and the content of the compound is 0.05 to 10 parts by mass relative to 100 parts by mass of the total of the solvent. Also disclosed is a nonaqueous electrolyte secondary battery employing the nonaqueous electrolyte solution. (R1R2C?CH—CO—O—)nY??(1) wherein R1 and R2 are each independently a hydrogen atom, a methyl group, or an amino group, n is 1, 2, or 4, when n is 1, Y is a hydrogen atom or a monovalent organic group, when n is 2, Y is a divalent organic group, and when n is 4, Y is a tetravalent organic group.

Abstract: The present invention relates to a method for producing lithium fluorosulfonate which comprises reacting a lithium salt and fluorosulfonic acid in a nonaqueous solvent, wherein the lithium salt is a lithium salt not generating water through the reaction step.

Abstract: A lithium secondary battery includes a positive electrode which can occlude and discharge lithium ion, a negative electrode which can occlude and discharge lithium ion, a separator which is disposed between the positive electrode and the negative electrode, and an electrolyte. In order to suppress a deterioration for a period of high temperature storage at 50° C. or more, the electrolyte includes a compound within whose molecule a plurality of polymerizable functional groups are included. The electrolyte can include a compound represented by the formula 3: wherein each of Z1 and Z2 represents a polymerizable functional group including any one selected from the group consisting of allyl group, methallyl group, vinyl group, acryl group and methacryl group.

Abstract: An electrolyte includes an organosilicon solvent, propylene carbonate, and a salt.

Abstract: Provided is a secondary battery electrolyte having improved high temperature properties and overcharge-prevention properties, particularly improved overcharge-prevention properties under high voltage/high current conditions, in conjunction with a minimized deterioration of the battery performance, by adding 3 to 5% by weight of cyclohexyl benzene (CHB) and 0.2 to 1.5% by weight of 2-fluoro biphenyl (2-FBP) as overcharge-preventing additives to an electrolyte of a lithium secondary battery.

Abstract: An additive for a sodium ion secondary battery of the present invention includes a compound of at least one of a saturated cyclic carbonate having a fluoro group and a chain carbonate having a fluoro group. A sodium ion secondary battery (1) of the present invention includes: a non-aqueous electrolytic solution including the additive for a sodium ion secondary battery and a non-aqueous solvent containing a saturated cyclic carbonate or a non-aqueous solvent containing a saturated cyclic carbonate and a chain carbonate; a positive electrode (11); and a negative electrode (12) that includes a coating formed in a surface of the negative electrode, the coating containing a composite material having carbon, oxygen, fluorine and sodium in the surface and includes a negative-electrode active material containing a hard carbon.

Abstract: Representative embodiments provide a liquid or gel separator utilized to separate and space apart first and second conductors or electrodes of an energy storage device, such as a battery or a supercapacitor. A representative liquid or gel separator comprises a plurality of particles, typically having a size (in any dimension) between about 0.5 to about 50 microns; a first, ionic liquid electrolyte; and a polymer. In another representative embodiment, the plurality of particles comprise diatoms, diatomaceous frustules, and/or diatomaceous fragments or remains. Another representative embodiment further comprises a second electrolyte different from the first electrolyte; the plurality of particles are comprised of silicate glass; the first and second electrolytes comprise zinc tetrafluoroborate salt in 1-ethyl-3-methylimidalzolium tetrafluoroborate ionic liquid; and the polymer comprises polyvinyl alcohol (“PVA”) or polyvinylidene fluoride (“PVFD”).

Abstract: An electrode material comprising a particle containing at least one member selected from the particles containing silicon, tin, silicon compound and tin compound, and fibrous carbon. The particle includes: (1) a particle comprising at least one member of a silicon particle, tin particle, particle containing a lithium-ion-intercalatable/releasable silicon compound and particle containing a lithium-ion-intercalatable/releasable tin compound; or (2) a particle comprising a silicon and/or silicon compound-containing carbonaceous material deposited onto at least a portion of the surfaces of a carbon particle having a graphite structure. The lithium secondary battery using the electrode material as a negative electrode has high discharging capacity and is excellent in cycle characteristics and characteristics under a load of large current.

Abstract: An electrochemical device includes an electrolyte; a cathode; and an anode including a negative active material of Formula LixNi?Mn?Co?M1?M2mO2-zM3z?; where M1 is Mg, Zn, Al, Ga, B, Zr, Ti, V, Cr Ag, Cu, Na, Mn, Fe, Cu, or Zr; M2 is P, S, Si, W, or Mo; M3 is F, Cl and N; 0<x; 0???1; 0???1; 0???1; 0???1; 0?m?0.5; 0?z?0.5; and 0?z??0.5, where at least one of ?, ?, and ? is greater than 0.

Abstract: An electrochemical cell provided with a positive electrode, a negative electrode, and an electrolyte. The positive electrode comprises a stabilized lithium metal oxide material, the lithium metal oxide material comprising one or more transition metal ions. The electrolyte is prepared by mixing ingredients comprising a solvent, a lithium salt, and a sultone.

Abstract: The object of the present invention is to provide a nonaqueous electrolytic solution that can improve the electrochemical properties in a broad temperature range and an electrochemical device using the same. A nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, wherein the nonaqueous solvent includes 0.1 to 30% by volume of a fluorine atom-containing cyclic carbonate, and further the nonaqueous electrolytic solution includes 0.001 to 5% by mass of a branched dinitrile compound in which the main chain of an alkylene chain linking the two nitrile groups has 2 or more and 4 or less of the carbon number.

Abstract: The present application provides a nonaqueous electrolyte secondary battery that includes, a cathode capable of being electrochemically doped/dedoped with lithium, an anode capable of being electrochemically doped/dedoped with lithium, and an electrolyte placed between the cathode and the anode, wherein the electrolyte contains at least one of fluoro ethylene carbonate represented by Chemical Formula (1) and difluoro ethylene carbonate represented by Chemical Formula (2) as a solvent and the ratio of a discharge capacity B during discharging at a 5C rate to a discharge capacity A during discharging at a 0.2C rate ((B/A)×100) is 80% or more.

Abstract: The present invention provides a non-aqueous electrolyte for secondary batteries, capable of suppressing gas generation in the secondary batteries during storage in a high-temperature environment or during charge/discharge cycles; and also provides a non-aqueous electrolyte secondary battery using the same. The non-aqueous electrolyte includes a non-aqueous solvent, a solute dissolved in the non-aqueous solvent, and an additive. The non-aqueous solvent includes ethylene carbonate and propylene carbonate. In the non-aqueous solvent, a content WEC of the ethylene carbonate is 5 to 20 mass % and a content WPC of the propylene carbonate is 40 to 60 mass %. The additive includes a sultone compound which includes a fluorine atom.

Abstract: A non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery including the same are provided. The non-aqueous electrolyte solution includes an organic solvent, an ionizable lithium salt, a dinitrile compound including an ether bond represented by Chemical Formula 1, and an aliphatic dinitrile compound represented by Chemical Formula 2. The lithium secondary battery including the non-aqueous electrolyte solution having the possibility of generating a swelling phenomenon while storing or charging/discharging at a high temperature may be restrained. In addition, a cycle life of the charging/discharging may be improved.

Abstract: A secondary electrochemical cell comprises an anode, a cathode including electrochemically active cathode material, a separator between the anode and the cathode, and an electrolyte. The electrolyte comprises at least one salt dissolved in at least one organic solvent. The separator in combination with the electrolyte has an area-specific resistance of less than about 2 ohm-cm2.

Abstract: The present invention provides an electrolyte solution including an ionic liquid having the structure of formula (I): wherein R1 is C1-C6alkyl, R2 is C2-C7alkyl, A? is defined in the specification. The electrolyte solution of the present invention has high conductivity and high thermal stability.

Abstract: A non-aqueous electrolyte secondary battery that has a battery element including a positive electrode member, a negative electrode member, and a non-aqueous electrolyte solution. The negative electrode member contains graphitizable carbon. With respect to 100 parts by weight of the non-aqueous electrolyte solution, fluoroethylenecarbonate is added at 0.5 parts by weight or more and 1.0 parts by weight or less, and lithium difluorobis(oxalato)phosphate is added at 0.5 parts by weight or more and 1.0 parts by weight or less, or fluoroethylenecarbonate and lithium difluorobis(oxalato)phosphate are added at 0.5 parts by weight or more and 2.0 parts by weight or less in total.

Abstract: An electrolyte additive and electrolyte and lithium rechargeable battery including the electrolyte additive are provided. The electrolyte additive may be a monosubstituted pentafluorocyclotriphosphazene.

Abstract: (1) A container for a nonaqueous electrolytic solution, containing a material containing an aluminum or aluminum alloy layer, and storing a nonaqueous electrolytic solution containing a nonaqueous solvent having dissolved therein an electrolyte salt, the container having a cap and a plug each formed of a resin, and maintaining the nonaqueous electrolytic solution to have a water content of 50 ppm or less after storing in the container for 30 days, (2) a nonaqueous electrolytic solution placed in the container, and (3) a method for storing a nonaqueous electrolytic solution. The container for a nonaqueous electrolytic solution is a light weight container that prevents the nonaqueous electrolytic solution from being decomposed on storing to maintain the high quality, and facilitates and ensures the handling of the nonaqueous electrolytic solution.

Abstract: The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising an ester-based compound having a branched-chain alkyl group and an ester-based compound having a straight-chain alkyl group; and a lithium secondary battery using the same.

Abstract: An embodiment of the present invention relates to a power storage device which includes a positive electrode having a positive-electrode current collector with a plurality of first projections, a first insulator provided over each of the plurality of first projections, and a positive-electrode active material provided on a surface of the first insulator and the positive-electrode current collector with the plurality of first projections; a negative electrode having a negative-electrode current collector with a plurality of second projections, a second insulator provided over each of the plurality of second projections, and a negative-electrode active material provided on a surface of the second insulator and the negative-electrode current collector with the plurality of second projections; a separator provided between the positive electrode and the negative electrode; and an electrolyte provided in a space between the positive electrode and the negative electrode and containing carrier ions.

Abstract: This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nanoweb with enhanced properties is also provided.

Abstract: An electrolyte for rechargeable lithium battery includes a lithium salt, a non-aqueous organic solvent, a first additive represented by the following Chemical Formula 1, and a second additive represented by the following Chemical Formula 2. A rechargeable lithium battery includes the electrolyte.

Abstract: An electrolyte includes an alkali metal salt; an aprotic solvent; and a redox shuttle additive including an aromatic compound having at least one aromatic ring fused with at least one non-aromatic ring, the aromatic ring having two or more oxygen or phosphorus-containing substituents.

Abstract: Disclosed herein are lithium or lithium-ion batteries that employ an aluminum or aluminum alloy current collector protected by conductive coating in combination with electrolyte containing aluminum corrosion inhibitor and a fluorinated lithium imide or methide electrolyte which exhibit surprisingly long cycle life at high temperature.