Abstract: Provided is a separator for an electrochemical device, the separator having excellent denseness, resistance, and wettability by electrolytic solutions. A separator for an electrochemical device, the separator being interposed between a pair of electrodes and being capable of holding an electrolytic solution containing an electrolyte, wherein the separator for an electrochemical device comprises solvent-spun regenerated cellulose fibers in which the core portion has an average fiber diameter of 1-11 ?m, the separator having a thickness of from 5 to 100 ?m, a density of from 0.25 to 0.9 g/cm3, and a curvature rate of from 1.5 to 15.

Abstract: Provided is a separator having excellent tearing strength, denseness, and impedance performance, and an aluminum electrolytic capacitor provided with the separator. The present invention constitutes a separator including beatable regenerated cellulose fibers, the separator having a CSF value X[ml] and tear index Y[mN·m2/g] within the ranges satisfying the following formulae. The present invention also constitutes an aluminum electrolytic capacitor in which at least one of the separators is used, the capacitor feeing formed by interposing the separator between an anode and a cathode. 0?X?300 ??Formula 1 15?Y?100 ??Formula 2 Y?0.175X?2.

Abstract: A heat-resistant separator for an electrochemical element in which the thickness of the separator is reduced while maintaining the balance between the short circuit resistance, resistance, electrolyte impregnation performance, and electrolyte retention performance of the separator. A separator for an electrochemical element includes beaten cellulose fibers, wherein the value obtained by dividing the average value for the distance between the center point of a cellulose stem fiber constituting part of the separator and the center point of another cellulose stem fiber nearest to said cellulose stem fiber by the thickness of the separator is 0.80 to 1.35.

Abstract: Provided is a separator for aluminum electrolytic capacitors, in which the separator has both good short circuit resistance and good impedance characteristics. A separator for aluminum electrolytic capacitors is formed, in which the separator is interposed between a positive electrode and a negative electrode of an aluminum electrolytic capacitor, and the separator includes at least one layer that is formed from plant fibers and has a dielectric breakdown strength of greater than or equal to 20 kV/mm.

Abstract: Provided is a separator for an electrochemical element that suppresses capacitance drop and voltage drop after use for a long time in a high temperature environment. The separator for an electrochemical element is a separator interposed between a pair of electrodes for isolating both the electrodes from each other and holding an electrolytic solution, in which the separator contains a cellulose-based fiber, and the total content of chlorine in the separator is 30 ppm or less.

Abstract: Provided is a separator for an electrochemical element, the separator having improved tensile strength and short-circuit resistance while maintaining the impedance characteristics and denseness expected of a separator comprising highly beaten regenerated cellulose fibers. The separator for an electrochemical element is interposed between a pair of electrodes and capable of holding an electrolytic solution containing an electrolyte, the separator for an electrochemical element comprising: 20 to 80 mass % of natural cellulose fibers A in which the length weighted average fiber length is 0.30 to 1.19 mm and the CSF is 500 to 50 ml; 10 to 50 mass % of natural cellulose fibers B in which the length weighted average fiber length and the maximum distribution fiber length are 1.20 to 1.99 mm and the CSF is 500 to 50 ml; and 10 to 50 mass % of beaten regenerated cellulose fibers.

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

Abstract: A separator for an electrochemical element interposed between a pair of electrodes, capable of holding an organic electrolytic solution contains an electrolyte. The separator is a wet-laid nonwoven fabric containing 10-50 mass % of thermoplastic synthetic fibers and 50-90 mass % of beaten regenerated cellulose fibers having a mean fiber length of 0.2-2.0 mm, the separator has a thickness of 10-70 ?m and a density of 0.25-0.90 g/cm3, including two parts obtained by bisecting a cross-section of the separator in a thickness direction. Two A-parts with a small number of the thermoplastic synthetic fibers and B-part with a large number of the thermoplastic synthetic fibers, and the A and B parts are formed into a single layer in an integrated manner; a value obtained by dividing the number of thermoplastic synthetic fibers in the A part by the number of the thermoplastic synthetic fibers in the B part is 0.85 or less.

Abstract: A non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, and the separator contains polyphenylenesulfide fibers, aramid fibers, and cellulose fibers at ratios of 50 to 85 mass %, 10 to 30 mass %, and 5 to 35 mass %, respectively. This makes it possible to provide a non-aqueous electrolyte battery with characteristics that are less likely to deteriorate under a high-temperature environment and in which few defects occur during assembly.

Abstract: A separator for an electric double-layer capacitor is provided having a double-layer structure made of a fibrous layer A obtained by papermaking using a Fourdrinier net or a tanmo net, and a fibrous layer B obtained by papermaking using a cylinder net. The fibrous layer A is a layer that is refined until a CSF value decreases once to 0 ml (lower limit), and further refined until it turns to rise to 10 to 600 ml, the fibrous layer B is a layer that is refined until a CSF value of 700 to 0 ml, and the fibrous layer A and the fibrous layer B contain 70% by mass or more refinable, regenerated cellulose fibers. The density of the entire double-layer structure is 0.25 to 0.65 g/cm3, and the thickness of the same is 10 to 150 ?m.

Abstract: Provided is an electrochemical device separator that can reduce the amount of gas produced within a casing and can suppress an increase in pressure after said electrochemical device has been manufactured. The electrochemical device separator, which is interposed between a pair of electrodes and is capable of retaining an electrolytic solution containing an electrolyte, is configured such that the total chlorine content according to quartz tube combustion gas absorption ion chromatography is 10 ppm or less, the total sulfur content according to the abovementioned ion chromatography is 100 ppm or less, and the R18 value according to TAPPI T 235 cm-09 is 90% or higher.

Abstract: The present invention provides an electrolyte holder for a lithium secondary battery capable of holding an electrolytic solution inside electrodes or at an interface between the separator and each of the electrodes, preventing electrolyte shortage inside the electrodes, and restraining dendrite from precipitating and growing and also provide the lithium secondary battery, using the electrolyte holder, which is capable of achieving a cycle life to such an extent that the lithium secondary battery can be used for industrial application. An electrolyte holder (3) for use in the lithium secondary battery consists of a multi-layer structure having at least two hydrophilic fibrous layers (A, B) having different porosities. The electrolyte holder (3) is composed of an electrode group formed by winding a cathode (2) and an anode (1) or laminating the cathode (2) and the anode (1) one upon another with an electrolyte holder (3) serving as a separator interposed between the cathode (2) and the anode (1).

Abstract: Provided is a separator for alkaline batteries, which has low resistance, while exhibiting excellent strength in electrolyte solutions and excellent shielding properties. A separator for alkaline batteries, which is used for the purpose of separating a positive electrode active material and a negative electrode active material from each other and holding a electrolyte solution. This separator for alkaline batteries is composed of: a base layer that is formed only of alkali-resistant fibers; and an alkali-resistant resin layer that contains 0.1-25 g/m2 of an alkali-resistant resin. The alkali-resistant fibers of the base layer are configured to contain alkali-resistant cellulose fibers in an amount of 10 to 100% by mass.

Abstract: Provided is a separator having excellent tearing strength, denseness, and impedance performance, and an aluminum electrolytic capacitor provided with the separator. The present invention constitutes a separator including beatable regenerated cellulose fibers, the separator having a CSF value X[ml] and tear index Y[mN·m2/g] within the ranges satisfying the following formulae. The present invention also constitutes an aluminum electrolytic capacitor in which at least one of the separators is used, the capacitor feeing formed by interposing the separator between an anode and a cathode. 0?X?300 ??Formula 1 15?Y?100 ??Formula 2 Y?0.175 X?2.

Abstract: Provided is a separator for an electrochemical element having exceptional strength and shielding performance, a small thickness, and low resistance. A separator for an electrochemical element interposed between a pair of electrodes and capable of holding an electrolytic solution containing an electrolyte, wherein the separator for an electrochemical element comprises a regenerated cellulose fiber having an average fiber length of 0.25-0.80 mm and an average fiber width of 3-35 ?m, and in which the value calculated by dividing the average fiber length by the average fiber width is 15-70.

Abstract: Provided is a separator for an electrochemical element, the separator having improved tensile strength and short-circuit resistance while maintaining the impedance characteristics and denseness expected of a separator comprising highly beaten regenerated cellulose fibers. The separator for an electrochemical element is interposed between a pair of electrodes and capable of holding an electrolytic solution containing an electrolyte, the separator for an electrochemical element comprising: 20 to 80 mass % of natural cellulose fibers A in which the length weighted average fiber length is 0.30 to 1.19 mm and the CSF is 500 to 50 ml; 10 to 50 mass % of natural cellulose fibers B in which the length weighted average fiber length and the maximum distribution fiber length are 1.20 to 1.99 mm and the CSF is 500 to 50 ml; and 10 to 50 mass % of beaten regenerated cellulose fibers.

Abstract: Provided is a separator for an electrochemical device, the separator having excellent denseness, resistance, and wettability by electrolytic solutions. A separator for an electrochemical device, the separator being interposed between a pair of electrodes and being capable of holding an electrolytic solution containing an electrolyte, wherein the separator for an electrochemical device comprises solvent-spun regenerated cellulose fibers in which the core portion has an average fiber diameter of 1-11 ?m, the separator having a thickness of from 5 to 100 ?m, a density of from 0.25 to 0.9 g/cm3, and a curvature rate of from 1.5 to 15.

Abstract: This battery positive electrode active material contains at least one compound selected from nickel hydroxide, nickel oxyhydroxide and derivatives of these which cause a redox reaction during battery operation, or alternatively contains a metal oxide, or derivative thereof, which does not cause a redox reaction during battery operation, or an inorganic-organic hybrid compound formed by an organic polymer having a hydroxyl group chemically bonding with said metal oxide or derivative. In a diffraction intensity-angle diagram obtained by powder X-ray diffraction using CuK? radiation in a state in which the active material contains nickel hydroxide, the half-value width of the diffraction peak corresponding to the crystal 001 plane of the nickel hydroxide is greater than or equal to 2 (2?°) and preferably greater than or equal to 4 (2?°), or there is no diffraction peak.

Abstract: It is difficult to obtain a glassy, monolithic molded body of an inorganic oxide with a high melting point and softening point. Although molding by sintering is possible, it is hard to obtain a molded body which is transparent and has high barrier properties. Further, producing molded bodies with the sol-gel process is costly, and it is difficult to produce a molded bodies of large size. In this invention, a molded body principally composed of inorganic oxides is produced with a method that involves a step in which an inorganic-organic hybrid compound, formed by an organic polymer having a hydroxyl group chemically bonding with an inorganic oxide or a derivative thereof, is heated in an atmosphere in which oxygen is present, and the organic polymer component of the inorganic-organic hybrid compound is oxidized and removed.

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