SEPARATOR FOR ELECTROCHEMICAL ELEMENT AND ELECTROCHEMICAL ELEMENT

• Main Authors: WADA NORIHIRO, ICHIMURA TAKUMI, IKAWA ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 15.11.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a separator for an electrochemical element having heat resistance and a thinned body while maintaining a balance between short circuit resistance, resistance property, electrolytic solution impregnation property, and electrolytic solution holding property of the separator.SOLUTION: In a separator for an electrochemical element including beaten cellulosic fibers, a value obtained by dividing an average value of a distance between the center point of the cellulose stem fiber constituting the separator and the center point of the other cellulose stem fiber closest to the cellulose stem fiber by the thickness of the separator is 0.80 to 1.35.SELECTED DRAWING: Figure 1 【課題】セパレータの耐ショート性、抵抗、電解液含浸性、電解液保持性のバランスを維持しつつ薄葉化した、耐熱性を有する電気化学素子用セパレータを提供する。【解決手段】叩解セルロース系繊維からなる電気化学素子用セパレータであって、セパレータを構成するセルロース幹繊維の中心点と、該セルロース幹繊維に最も近い他のセルロース幹繊維の中心点とを結んだ距離の平均値を、該セパレータの厚さで除した値が、０．８０〜１．３５である電気化学素子用セパレータを構成する。【選択図】図１