BATTERY SEPARATOR, BATTERY, AND BATTERY SEPARATOR COATING LIQUID

• Main Authors: YAMAMOTO HIROKI, YAMANE NORIO, SUZUKI KATSUTO
• Format: Patent
• Language: English; Japanese
• Published: 19.04.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a battery separator coating liquid which has both of superior fine particle dispersibility and excellent coatability, and which enables the formation of a battery separator having an excellent mechanical strength.SOLUTION: The present invention relates to a battery separator comprising a base material, and a fiber-containing layer. The fiber-containing layer comprises a fibrous cellulose having a fiber width of 1000 nm or less and including an ionic substituent group, fine particles, and a binder resin.SELECTED DRAWING: None 【課題】本発明は、優れた微粒子分散性と、塗工性を兼ね備えた電池用セパレータ塗液であって、優れた機械的強度を有する電池用セパレータを形成し得る電池用セパレータ塗液を提供することを課題とする。【解決手段】本発明は、基材と、繊維含有層とを有し、繊維含有層は、繊維幅が１０００ｎｍ以下であって、イオン性置換基を有する繊維状セルロースと、微粒子と、バインダー樹脂と、を含む電池用セパレータに関する。【選択図】なし