Patent ID: 6596440
Filing Date: 2003-07-22
Classification: H01M,Y02E

Abstract:
A polymer electrolyte comprising a polymer, a metal salt, and optionally at least one plasticizer or solvent, characterized in that the polymer is an amphiphilic graft copolymer comprising a backbone carrying hydrophilic and hydrophobic grafts attached to different carbon atoms in the backbone, wherein the polymer has the following structure: wherein: z, y and v refer to the composition given as weight percent of the total weight of the polymer, the value of z may vary from 5 to 90 weight percent, y is in the range of 5 to 95 weight percent, and v is in the range of 0 to 90 weight percent; n is an integer with a value in the range of 5 to 35, and R1 is selected from the group consisting of an alkyl group, preferably C1-5 alkyl. R2 is selected from the group consisting of a fluorinated C1-20 alkyl.