SEPARATOR FOR NONAQUEOUS ELECTROLYTE POWER STORAGE DEVICES, NONAQUEOUS ELECTROLYTE POWER STORAGE DEVICE, AND MANUFACTURING METHOD THEREOF

• Main Authors: GOTO CHISATO, YANO MASAYA, IKENAGA AKIE, ITO SATOSHI, NOMI SHUNSUKE
• Format: Patent
• Language: English; Japanese
• Published: 30.04.2015
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a separator for nonaqueous electrolyte power storage devices which can contribute to the enhancement of a performance of a nonaqueous electrolyte power storage device, and is arranged by use of an epoxy resin composition.SOLUTION: A method for manufacturing a separator for nonaqueous electrolyte power storage devices which has a film thickness in a range of 5-50 μm comprises the steps of: preparing an epoxy resin composition including an epoxy resin having two epoxy groups, an epoxy resin having three or more epoxy groups, and an epoxy equivalent of 160 g/eq. or less, a hardening agent, and a porogen; shaping a hardened material of the epoxy resin composition into a sheet form or hardening a sheet-like mold of the epoxy resin composition so as to produce an epoxy resin sheet; and removing the porogen from the epoxy resin sheet. 【課題】非水電解質蓄電デバイスの性能の向上に寄与できるエポキシ樹脂組成物を用いた非水電解質蓄電デバイス用セパレータを提供することを目的とする。【解決手段】膜厚が５〜５０μｍの範囲にある非水電解質蓄電デバイス用セパレータを製造する方法であって、エポキシ基を２個有するエポキシ樹脂、エポキシ基を３個以上有するとともにエポキシ当量が１６０ｇ/ｅｑ．以下であるエポキシ樹脂、硬化剤及びポロゲンを含むエポキシ樹脂組成物を調製する工程と、エポキシ樹脂シートが得られるように、エポキシ樹脂組成物の硬化体をシート状に成形する又はエポキシ樹脂組成物のシート状成形体を硬化させる工程と、エポキシ樹脂シートからポロゲンを除去する工程と、を含む、非水電解質蓄電デバイス用セパレータの製造方法を提供する。【選択図】図１