비수계 이차 전지용 세퍼레이터 및 비수계 이차 전지

• Main Authors: MIURA MAI, KURATANI RIKA, NISHIKAWA SATOSHI
• Format: Patent
• Language: Korean
• Published: 21.02.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

비수계 이차 전지용 세퍼레이터는, 다공질 기재와, 폴리불화비닐리덴계 수지 및 필러를 포함하는 접착성 다공질층을 구비하고, 걸리값이 50초/100mL~200초/100mL이고, 접착성 다공질층에 포함되는 폴리불화비닐리덴계 수지 전체를 시료로 하여 시차 주사 열량 측정을 했을 때 흡열 피크가 2개 이상 및/또는 발열 피크가 2개 이상 관측된다. Provided is a separator for a non-aqueous secondary battery, the separator contains a porous substrate and an adhesive porous layer that contains a polyvinylidene fluoride type resin and a filler, in which a Gurley value of the separator is from 50 sec/100mL to 200 sec/100mL, and when differential scanning calorimetry is performed with all of the polyvinylidene fluoride type resin contained in the adhesive porous layer as a sample, two or more endothermic peaks and/or two or more exothermic peaks are observed.