Patent ID: 8003263
Filing Date: 2011-08-23
Classification: H01M,Y02E,Y02P

Abstract:
1. A separator for a battery, coated with a gel polymer over 40-60% of a total separator area based on a surface of the separator to be coated with the gel polymer, wherein the separator is partially coated with the gel polymer in which coated or non-coated areas form a pattern, the gel polymer coat has a thickness of from 1 to 2 micrometers, the gel polymer is coated on the separator by gravure coating, and the gel polymer is selected from the group consisting of polyvinylidene fluoride (PVDF); polyethylene glycol diacrylate; polyalkylene glycol diacrylates; polyalkylene glycol dimethacrylates; ether polymers; carbonate polymers; acrylonitrile polymers; copolymers and crosslinked polymers consisting of at least two of them; and fluoropolymers.