CROSS-LINKING POLYMER-SUPPORTED POROUS FILM FOR BATTERY SEPARATOR AND METHOD FOR PRODUCING BATTERY USING THE SAME

• Main Authors: KII KEISUKE, UETANI YOSHIHIRO, NISHIKAWA SATOSHI
• Format: Patent
• Language: English; Korean
• Published: 09.06.2004
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; 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; WORKING-UP

PURPOSE: Provided is a surface-treated porous film for production of a battery and a battery having high rate performance and lower internal resistance together with sufficient adhesiveness using the porous film. CONSTITUTION: The porous film supported with cross-linking polymer useful for the separator of a battery includes the porous film having a plurality of anion polymerization groups. The film is prepared by the steps of: preparing porous film/electrode laminate supported by cross-linking polymer; locating the laminate on a battery chamber; pouring electrolyte solution containing anion polymerization catalyst into the battery container to derive anion polymerization and cross-linking reaction of the cross-linking polymer and to partially conduct gelation of the electrolyte; and attaching the porous film to the electrode.