Abstract: An organic electrolyte solution and a lithium battery using the same are provided. The organic electrolyte solution uses a monomer compound which can be electrografted, and which prevents crack formation caused by volumetric changes in the anode active material during battery charging/discharging. This improves charge/discharge characteristics, thereby improving the stability, reliability, and charge/discharge efficiency of the battery.

Abstract: A polymer electrolyte composition characterized by comprising: (1) a crosslinked material of a polyether binary copolymer which has a main chain comprising repeating units represented by the formula (i) and crosslinking units represented by the formula (ii) and which has a weight-average molecular weight of 104 to 107, (2) an electrolyte solution comprising an aprotic organic solvent, (3) an additive, as an optical ingredient, which comprises an ether compound having an ethylene oxide unit, and (4) an electrolyte salt compound comprising a lithium salt compound. The composition is excellent in liquid retention and ionic conductivity, is usable in a wide temperature range, and has excellent electrochemical properties.

Abstract: A nonaqueous electrolyte battery includes: a positive electrode; a negative electrode; a nonaqueous electrolyte that includes a solvent and an electrolyte salt, the solvent including a halogenated cyclic carbonate of the Formula (1) below, or at least one of unsaturated cyclic carbonates of the Formulae (2) and (3) below; and a polyacid and/or a polyacid compound contained in the battery, where X is a F group or a Cl group, R1 and R2 are each independently a CnH2n+1 group (0?n?4), and R3 is CnH2n+1?mXm (0?n?4, 0?m?2n+1), where R4 and R5 are each independently a CnH2n+1 group (0?n?4), where R6 to R11 are each independently a CnH2n+1 group (0?n?4).

Abstract: Nanostructured gel polymer electrolytes that have both high ionic conductivity and high mechanical strength are disclosed. The electrolytes have at least two domains—one domain contains an ionically-conductive gel polymer and the other domain contains a rigid polymer that provides structure for the electrolyte. The domains are formed by block copolymers. The first block provides a polymer matrix that may or may not be conductive on by itself, but that can soak up a liquid electrolyte, thereby making a gel. An exemplary nanostructured gel polymer electrolyte has an ionic conductivity of at least 1×10?4 S cm?1 at 25° C.

Abstract: Provided are a thickening agent for an alkaline battery, which can satisfactorily retain long-term discharge characteristics (discharge quantity and discharge time) and provide excellent impact resistance, and an alkaline battery used therewith. In the invention, the thickening agent for an alkaline battery comprises (A) a crosslinked polymer comprising, as essential constituent units, (a1) a water-soluble vinyl monomer and/or (a2) a vinyl monomer being converted into (a1) by hydrolysis, (b) a hydrolyzable crosslinking agent undergoing alkaline hydrolysis, and (c) a non-hydrolyzable crosslinking agent not undergoing alkaline hydrolysis, wherein (b) and (c) each has a content of 0.05% to 1% by weight based on the weight of (A), and satisfies Requirements (1) and (2) described below: Requirement (1): the weight ratio (b)/(c) between (b) and (c) is from 1.0 to 5.0; Requirement (2): a specific solution (S1) has a viscosity of 25 to 100 Pa·s at 25° C.

Abstract: Disclosed are a separator for a battery, which is coated with a gel polymer over 40-60% of total separator area, and a rechargeable lithium battery using the separator. The separator partially coated with a gel polymer reduces the battery resistance so that the battery power can be improved. Additionally, the separator increases electrolyte impregnation rate and provides uniform electrolyte impregnation, thereby improving the life, capacity and high-rate discharge property of a battery. Further, the separator permits electrode reactions to be performed uniformly, thereby preventing lithium precipitation and improving the battery safety.

Abstract: Provided are a method of preparing a gel polymer electrolyte secondary battery, and a gel polymer electrolyte secondary battery prepared by the method. The gel polymer electrolyte secondary battery includes a cathode, an anode, a separator and a gel polymer electrolyte in a battery case. The method includes (S1) coating a polymerization initiator on a surface of at least one selected from a group consisting of a cathode, an anode, a separator of a non-woven fabric, and a battery case, the surface needed to be contacted with a gel polymer electrolyte; (S2) putting an electrode assembly including the cathode, the anode, the separator of a non-woven fabric into the battery case; and (S3) forming a gel polymer electrolyte by introducing a gel polymer electrolyte composition including an electrolyte solvent, an electrolyte salt and a polymer electrolyte monomer into the battery case, and polymerizing the monomer.

Abstract: A lithium ion secondary battery including an electrode for a lithium ion secondary battery, the electrode including: a current collector 30; an electrode active material layer 31 being laminated on a surface of the current collector 30 and including an electrode active material 32 capable of absorbing and desorbing lithium ions; a lithium ion conductive layer 13 being laminated on a surface of the electrode active material layer 31, and including a lithium ion conductive gel swelled with a non-aqueous electrolyte; and a porous heat-resistant layer 14 being laminated on a surface of the lithium ion conductive layer 13, and including insulating metal oxide particles.

Abstract: Composite current collectors containing coatings of metals, alloys or compounds, selected from the group of Zn, Cd, Hg, Ga, In, Tl, Sn, Pb, As, Sb, Bi and Se on non-metallic, non-conductive or poorly-conductive substrates are disclosed. The composite current collectors can be used in electrochemical cells particularly sealed cells requiring a long storage life. Selected metals, metal alloys or metal compounds are applied to polymer or ceramic substrates by vacuum deposition techniques, extrusion, conductive paints (dispersed as particles in a suitable paint), electroless deposition, cementation; or after suitable metallization by galvanic means (electrodeposition or electrophoresis). Metal compound coatings are reduced to their respective metals by chemical or galvanic means. The current collectors described are particular suitable for use in sealed primary or rechargeable galvanic cells containing mercury-fee and lead-free alkaline zinc electrodes.

Abstract: Provided is an anode for use in electrochemical cells, wherein the anode active layer has a first layer comprising lithium metal and a multi-layer structure comprising single ion conducting layers and polymer layers in contact with the first layer comprising lithium metal or in contact with an intermediate protective layer, such as a temporary protective metal layer, on the surface of the lithium-containing first layer. Another aspect of the invention provides an anode active layer formed by the in-situ deposition of lithium vapor and a reactive gas. The anodes of the current invention are particularly useful in electrochemical cells comprising sulfur-containing cathode active materials, such as elemental sulfur.

Abstract: Polymeric ionic gels of ionic liquids having melting points below about 100° C. that are formed by the reaction of a heterocyclic amine with about 2.8 and about 3.2 moles of anhydrous hydrogen fluoride per mole of amine nitrogen. Electrochemical devices having non-aqueous electrolytes containing the ionic liquids and polymeric ionic gels are also disclosed.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The nonaqueous electrolyte contains a solvent, an electrolyte salt and an additive. Also, the additive includes an aromatic nitrile compound having two or more nitrogen atoms.

Abstract: An electrolyte includes (a) a eutectic mixture of an alkoxy alkyl group-containing amide compound and an ionizable lithium salt; and (b) a carbonate-based compound. The electrolyte has excellent thermal and chemical stability and exhibits a low lowest limit of electrochemical window. Also, the electrolyte shows low viscosity and high ion conductivity, so it may be usefully applied as an electrolyte of electrochemical devices using various anode materials.

Abstract: In a device (6) for power generation, having a first electrode (1) and a second electrode (2), a partition layer (3), which comprises at least one zwitterion compound and/or one radical compound, is disposed between the two electrodes (1, 2). After the two electrodes (1, 2) and the partition layer (3) are brought together, an external voltage is applied between the two electrodes (1, 2) for a specific period of time.

Abstract: An inexpensive and durable polymer electrolyte composition exhibiting high ionic conductivity even in the absence of water or a solvent, characterized by comprising a molten salt and an aromatic polymer having a carbonyl bond and/or a sulfonyl bond in the main chain thereof and containing a cation exchange group. The aromatic polymer is preferably an aromatic polyether sulfone having a specific structural unit and containing a cation exchange group, an aromatic polyether ketone having a specific structural unit and containing a cation exchange group, or an aromatic polyether sulfone block copolymer and/or an aromatic polyether ketone block copolymer, the block copolymers comprising a hydrophilic segment containing a cation exchange group and a cation exchange group-free hydrophobic segment. The polymer electrolyte composition containing the block copolymer as an aromatic polymer exhibits high structural retention even in high temperatures.

Abstract: The invention relates to ionic compounds in which the anionic load has been delocalized. A compound disclosed by the invention includes an anionic portion combined with at least one cationic portion Mm+ in sufficient numbers to ensure overall electronic neutrality; the compound is further comprised of M as a hydroxonium, a nitrosonium NO+, an ammonium —NH4+, a metallic cation with the valence m, an organic cation with the valence m, or an organometallic cation with the valence m. The anionic load is carried by a pentacyclical nucleus of tetrazapentalene derivative bearing electroattractive substituents. The compounds can be used notably for ionic conducting materials, electronic conducting materials, colorant, and the catalysis of various chemical reactions.

Abstract: An electrolyte includes an eutectic mixture composed of (a) a hetero cyclic compound having a predetermined chemistry figure, and (b) an ionizable lithium salt. An electrochemical device having the electrolyte. The eutectic mixture included in the electrolyte exhibits inherent characteristics of an eutectic mixture such as excellent thermal stability and excellent chemical stability, thereby improving the problems such as evaporation, ignition and side reaction of an electrolyte caused by the usage of existing organic solvents.

Abstract: Disclosed herein is an electrolyte including: a solvent; an electrolyte salt; and an alkanamine derivative represented by the following formula (1): where R1 is an alkyl group of 1 to 3 carbon atoms which may have a substituent group, and R2 and R3 are each independently a sulfonyl group having a substituent group of 1 to 3 carbon atoms or a sulfinyl group having a substituent group of 1 to 3 carbon atoms.

Abstract: A flame retarding polymer electrolyte composition containing maleimides includes a modified maleimide; a lithium salt; and at least one ionic solution in a ratio of at least 2 wt % relative to the total weight of the composition. By using the hyperbranched dendrimer-like structure of the modified maleimide as grafted skeleton for polymer electrolytes, the electrolyte composition can encapsulate an electrolytic solution continuously, thus preventing the exudation of the electrolytic solution and increasing the stability of lithium ionic conduction. Since the ionic solution is nonflammable, the safety of batteries are further enhanced when the polymer electrolyte composition is used as polymer electrolyte for a lithium secondary battery.

Abstract: An electrolyte includes a eutectic mixture composed of (a) an alkoxy alkyl group-containing amide compound having a specific chemistry formula; and (b) an ionizable lithium salt. The eutectic mixture contained in the electrolyte has excellent high temperature stability as well as inherent characteristics of eutectic mixtures such as excellent thermal stability and excellent chemical stability, so it contributes to improvement of high temperature stability and decrease the lowest limit of a electrochemical window. Thus, the electrolyte may be usefully applied to electrochemical devices using various anode materials.

Abstract: The polymer electrolyte membrane according to the present invention includes a proton-conducting polymer including metal ions bound to polyalkylene oxide. The polymer electrolyte membrane can save manufacturing cost of a fuel cell and improve proton conductivity and mechanical strength.

Abstract: A method and apparatus for making thin-film batteries having composite multi-layered electrolytes with soft electrolyte between hard electrolyte covering the negative and/or positive electrode, and the resulting batteries. In some embodiments, foil-core cathode sheets each having a cathode material (e.g., LiCoO2) covered by a hard electrolyte on both sides, and foil-core anode sheets having an anode material (e.g., lithium metal) covered by a hard electrolyte on both sides, are laminated using a soft (e.g., polymer gel) electrolyte sandwiched between alternating cathode and anode sheets. A hard glass-like electrolyte layer obtains a smooth hard positive-electrode lithium-metal layer upon charging, but when very thin, have randomly spaced pinholes/defects. When the hard layers are formed on both the positive and negative electrodes, one electrode's dendrite-short-causing defects on are not aligned with the other electrode's defects.

Abstract: A thickener for use in an alkaline battery provides a gel viscosity ratio (N1h/N12h) of 0.7 to 1.3, the gel viscosity ratio (N1h/N12h) being a ratio of a viscosity (N1h) of a gel after being left to stand for one hour to a viscosity (N12h) of the gel after being left to stand for twelve hours (where the gel viscosity is a viscosity of a gel composed of 2.0 parts by weight of the thickener, 200 parts by weight of zinc powder, and 100 parts by weight of 37 wt % aqueous solution of potassium hydroxide, measured at 40° C. according to JIS K7117-1: 1999). An alkaline battery having a negative electrode gel in which the thickener of the present invention is used is provided. The alkaline battery exhibits improved long-term retention of discharge characteristics (discharge amount and discharge time), and improved impact resistance.

Abstract: The present invention relates to an aqueous electrolyte solution absorber including an aqueous electrolyte solution absorbent polymer obtained by introducing a hydrophilic polar group to a water insoluble polymer and a material to be sucked. The aqueous electrolyte solution absorber is produced by filling a water permeable bag type member with the aqueous electrolyte solution absorbent polymer obtained by introducing the hydrophilic polar group to the water insoluble polymer and a material to be sucked. The aqueous electrolyte solution absorber is inexpensive and has a high safety, a broad applicable range and a good handling property upon transportation or storage. Thus, a large amount of aqueous electrolyte solution absorbers can be rapidly conveyed at one time even to a risky place where persons are endangered to convey the absorbers.

Abstract: Active metal and active metal intercalation electrode structures and battery cells having ionically conductive protective architecture including an active metal (e.g., lithium) conductive impervious layer separated from the electrode (anode) by a porous separator impregnated with a non-aqueous electrolyte (anolyte). This protective architecture prevents the active metal from deleterious reaction with the environment on the other (cathode) side of the impervious layer, which may include aqueous or non-aqueous liquid electrolytes (catholytes) and/or a variety electrochemically active materials, including liquid, solid and gaseous oxidizers. Safety additives and designs that facilitate manufacture are also provided.

Abstract: An electrochemical cell for a secondary battery is provided, which includes a positive electrode having an intercalation cathode material of bentonite; a negative electrode material having an anode material containing one of magnesium and sodium; an electrolyte positioned in contact with at least one of the positive electrode and the negative electrode; wherein, when the anode material contains magnesium, the electrolyte is a solid gel polymeric electrolyte; and wherein, when the anode material is sodium, the electrolyte is a salt electrolyte, both the anode material and the electrolyte are molten at the operating temperature of the battery, and the cell further comprises a beta alumina solid electrolyte separator between the negative electrode and the electrolyte. To increase its conductivity, the bentonite material is treated, before cell assembly, with an acid and/or intercalated with an anilinium ion, which is then polymerized to form a polyaniline within the bentonite framework.

Abstract: Provided herein is an electrochemical cell for a secondary battery, which includes a positive electrode having an active intercalation cathode material of treated bentonite; a negative electrode material having an active anode material containing one of magnesium and sodium; an electrolyte positioned in contact with at least one of the positive electrode and the negative electrode; wherein, when the active anode material contains magnesium, the electrolyte is a solid gel polymeric electrolyte; and wherein, when the active anode material is sodium, the electrolyte is a salt electrolyte, both the anode material and the electrolyte are molten at the operating temperature of the battery, and the cell further comprises a beta alumina solid electrolyte separator between the negative electrode and the electrolyte.

Abstract: A lithium-ion rechargeable cell is described which contains an electrolyte comprising a pyrazolium cation, an imidazolium cation, or a combination thereof, as well as lithium ion, and at least one non-Lewis acid derived counter-ion and which has a ratio of cathode capacity to anode capacity of 1 or less, 1 or greater, and preferably about 1.3 or greater. Electrochemical cells containing an anode, a cathode, and the ionic liquid electrolytes preferably have effective charge/discharge capacity and charging efficiency at low temperatures and at high temperatures.

Abstract: A method of forming an electrochemical cell is disclosed. The method comprises contacting a negative pole layer and a positive pole layer one with the other or with an optional layer interposed therebetween. The pole layers and the optional layer therebetween are selected to self-form an interfacial separator layer between the pole layers upon such contacting.

Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazole block polymers which, owing to their outstanding chemical and thermal properties, can be used widely and are suitable in particular as polymer electrolyte membrane (PEM) for producing membrane electrode units or so-called PEM fuel cells.

Abstract: Disclosed is an electrolyte for a secondary battery, comprising an eutectic mixture consisting of: (a) am amide group-containing compound with at least one EDG introduced into the N-position thereof; and (b) an ionizable lithium salt. Also, provided are a secondary battery comprising such an electrolyte, and a method of adjusting an electrochemical stability window of an eutectic mixture consisting of an amide group-containing compound and a lithium salt by regulating electron donating properties of at least one substituent group introduced into the N-position of the amide group-containing compound.

Abstract: A solid polymer electrolyte produced using a layer-by layer (LBL) assembly process. The solid electrolyte is assembled on a substrate by alternating exposure to dilute solutions of polycation and polyanion or hydrogen-bonding donor and hydrogen-bonding acceptor. Ethylene oxide content is introduced into the LBL film by 1) covalent grafting onto a polyionic species, 2) inclusion of an ethylene oxide (e.g. PEO) polymer as one of the two component species of a LBL assembly, or 3) the addition of ethylene oxide-containing small molecule, oligomer, or polymer to a fully assembled LBL polymer matrix. The prepared films were to be ultrathin SPE films with sound mechanical properties and ion conductivity to meet the needs of current applications, such as batteries, fuels cells, sensors and electrochromic devices.

Abstract: A battery separator for a lithium battery is disclosed. The separator has a microporous membrane and a coating thereon. The coating is made from a mixture of a gel forming polymer, a first solvent, and a second solvent. The first solvent is more volatile than the second solvent. The second solvent acts as a pore former for the gel-forming polymer.

Abstract: Provided is a method of producing a nanoparticle-filled phase inversion polymer electrolyte. The method includes mixing a nanoparticle inorganic filler and a polymer with a solvent to obtain a slurry; casting the obtained slurry to form a membrane; obtaining an inorganic nanoparticle-filled porous polymer membrane by developing internal pores in the cast membrane using a phase inversion method; and impregnating the inorganic nanoparticle-filled porous polymer membrane with an electrolytic solution. The polymer electrolyte produced using the method can be used in a small lithium secondary battery having a high capacity, thereby providing an excellent battery property.

Abstract: The present invention has its object to provide a gelling agent for a battery, which forms a paste gel in a short period of time on dissolution in an alkaline electrolyte. The gel has less bubbles and a high gel density. The present invention is a gelling agent for a battery, which comprises granular carboxyl group-containing polymer particles having a median particle diameter of 100 to 800 ?m and a bulk density of 0.30 g/ml or more, and has a gel turbidity of 200 ppm or less and a gel density of 1.37 g/ml or more in a gel, the gel being prepared by adding 2 parts by mass of the granular carboxyl group-containing polymer particles to 98 parts by mass of 40% by mass of an aqueous potassium hydroxide solution.

Abstract: The present invention uses a mixture of spherical carbonaceous materials having different average particle sizes as an anode active material in an anode composite mixture layer of an anode. The spherical carbonaceous material of large particle size decreases the reaction with non-aqueous electrolyte solution to suppress the decrease in battery capacity, form clearances having suitable sizes in the anode composite mixture layer, and retain the non-aqueous electrolyte solution. The clearances in the anode composite mixture layer are efficiently filled with the carbonaceous material of small particle size while spaces capable of suitably retaining the non-aqueous electrolyte solution are left unfilled. Thus, the volume density of the anode composite mixture layer is improved and the battery capacity is increased. Accordingly, energy density can be increased without deteriorating battery characteristics.

Abstract: A non-aqueous solvent is provided that includes ethylene carbonate in a range from 5% or more to less than 60%, propylene carbonate of 40% or less, and diethyl carbonate of 40% or more, as mass ratios. The non-aqueous electrolyte compositions are formed by further adding an electrolytic salt and, if necessary, unsaturated cyclic carbonic ester and a high molecular compound into the non-aqueous solvent. A non-aqueous electrolyte secondary battery is formed by using the non-aqueous electrolyte compositions.

Abstract: This invention relates to non-aqueous electrolytes, in particular, a non-aqueous electrolyte for lithium-ion secondary batteries. The electrolyte comprises regular organic solvents and electrolyte saline. The special characteristics are: the electrolyte also comprises mixed additives, said mixed additives comprising at least one of those of compound group A, at least one of those of compound group B, and one of those of compound group C wherein: compound group A are selected from inorganic saline including Li2CO3, Li2SO4, Li2SO3, LiNO3; compound group B are selected from vinylene carbonate, propylene carbonate; and compound group C are selected from ES, PS, DMS, DES, DMSO. The weight ratio can be A:B:C=0.1%-3.0%:0.5%-4.0%:1.0%-5.0%.

Abstract: Disclosed is a secondary battery including (i) a cathode; (ii) an anode; (iii) a separator; and (iv) a gel polymer electrolyte composition including an electrolyte solvent, an electrolyte salt, and a polymerizable monomer, wherein a polymerization initiator is coated or added on at least one battery device element in contact with the gel polymer electrolyte composition. Also, the secondary battery including a cathode, an anode, a separator, and a gel polymer electrolyte is manufactured by the steps of: coating or adding a polymerization initiator on/to at least one battery device element in contact with the gel polymer electrolyte; inserting the cathode, the anode, and the separator into a battery case; and forming the gel polymer electrolyte by injecting a gel polymer electrolyte composition including an electrolyte solvent, an electrolyte salt, and a polymerizable monomer into the battery case, and carrying out polymerization.

Abstract: The battery includes an electrolyte activating one or more cathodes and one or more anodes. The electrolyte includes one or more mono[bidentate]borate salts in a solvent. The solvent includes a silane or a siloxane. The mono[bidentate]borate salt can include a lithium dihalo mono[bidentate]borate such as lithium difluoro oxalatoborate (LiDfOB).

Abstract: A polymer electrolyte including: a lithium salt; an organic solvent; a fluorine compound; and a polymer of a monomer represented by Formula 1 below. H2C?C—(OR)n—OCH?CH2??Formula 1 In Formula 1, R is a C2-C10 alkylene group, and n is in a range of about 1 to about 1000.

Abstract: The present invention is concerned with novel polar solvents and novel electrolytic compositions comprising such solvents, and having a high range of stability, as required for applications in the field of electrochemistry. The present solvents have a highly polar amide function, and preferably combine with a salt soluble in the solvent and having an anion with a delocalized charge, and at least one polymer, to form an electrolytic composition.

Abstract: The present invention provides a multi-component composite film comprising a) polymer support layer; and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.

Abstract: A process for preparing membranes formed by (per) fluorinated ionomeric electrolytes salified with the lithium ion, comprising the following steps: a) obtaining of (per) fluorinated polymer membranes, containing —SO2F groups; b) partial or complete salification of (per)fluorinated polymer membranes containing —SO2F groups with basic lithium compounds and final washing with water; c) swelling and contemporaneous drying process of membranes by dipping in a heterogeneous biphasic system of a dipolar aprotic solvent wherein insoluble solid drying agents are dispersed.

Abstract: To provide high energy density, good cycle properties and rate characteristics and long-term safety of a lithium ion battery containing at least an ionic liquid and a lithium salt. The above problems are solved by suppressing reduction and decomposition of the ionic liquid on an anode by using a graphite coated with an amorphous carbon or onto which an amorphous carbon is deposited as an anode active material.

Abstract: A polymerizable composition for electrochemical devices contains a polymerizable compound of Formula 1 and a polymerizable compound of Formula 2, wherein “x” is an integer of 4 to 6; “m” is an integer of 1 to 10; and R is a lower alkyl group. The composition is polymerized to provide a polymer, and the polymer is used in an electrolyte to provide a gel electrolyte. The gel electrolyte has a high degree of swelling with electrolytic solution and thereby shows a high ionic conductivity.

Abstract: A battery in which the relative positions of a cathode, an anode and a separator are maintained with high precision is provided. A cathode and an anode face each other with a polymer electrolyte including a polymer and a separator in between. In each of the cathode and the anode, an active material layer is disposed on a current collector. Exposed regions where the active material layers are not disposed on the current collectors and the separator are adhered to each other with the polymer electrolyte in between. Thereby, even under a high-temperature environment, the heat shrinkage of the separator can be prevented, and heat generation due to the generation of a short-circuit current can be prevented.

Abstract: A gel electrolyte and a gel electrolyte battery are provided. The gel electrolyte includes a matrix polymer; a nonaqueous solvent; and an electrolytic solution having an electrolyte salt containing lithium dissolved in the nonaqueous solvent, in which the matrix polymer is swollen with the electrolytic solution. The matrix polymer comprises polyvinylidene fluoride copolymerized with at least hexafluoropropylene in an amount of 3 wt % or more and 7.5 wt % or less. The nonaqueous solvent comprises ethylene carbonate; and at least one solvent selected from the group consisting of dimethyl carbonate, ethylmethyl carbonate, diethyl carbonate, ethylpropyl carbonate, ethyl butyl carbonate, and dipropyl carbonate. The content of the ethylene carbonate in the nonaqueous solvent is 15 wt % or more and 55 wt % or less, and the total content of the at least one solvent in the nonaqueous solvent is 30 wt % or more and 85 wt % or less.

Abstract: A composite ion exchange membrane having a high swelling resistance and being superior in mechanical strength and ion conductivity can be provided by means of an composite ion exchange membrane including an ion exchange resin composition and a support membrane having a continuous pore penetrating the support membrane, wherein the support membrane is one which accepts the ion exchange resin composition within the pore, and wherein the ion exchange resin composition is one which contains an ion exchange resin containing, as a main component, an aromatic polyether and/or its derivative, the aromatic polyether being obtained by mixing a compound having a specific structure, an aromatic dihalogenated compound and a bisphenol compound with a carbonate and/or a bicarbonate of an alkali metal and polymerizing the mixture in an organic solvent.

Abstract: An electrolyte whose battery capacity, cycle characteristics, load characteristics, and low temperature characteristics are all excellent, and a battery using it. A cathode and an anode are layered and wound with a separator and electrolyte layer in between. The electrolyte layer contains an electrolytic solution containing at least one from the group consisting of vinylethylene carbonate and its derivatives in the range of 0.05 wt % to 5 wt % in total and a polymer. Therefore, chemical stability of the electrolyte layer is improved. It is preferable that the electrolytic solution further contains ethylene carbonate and propylene carbonate with a mass ratio of ethylene carbonate to propylene carbonate ranging from about 15/85 to about 75/25.