Patent ID: 7455934
Filing Date: 2008-11-25
Classification: C08J,G02B,H01B,H01M,H01S,Y02E

Abstract:
1. A material for a solid polyelectrolyte, comprising a multi-segmented fluoropolymer that comprises a block copolymer and/or a graft copolymer, wherein the copolymer contains one or more blocks essentially consisting of segment A and one or more blocks essentially consisting of segment B, the segment A combines with the segment B, wherein the segment A has a molecular weight of 5,000 to 1,000,000, and the Segment A is a copolymer chain comprising: the segment B is a fluoropolymer containing no sulfonic acid functional groups, has a molecular weight of 3,000 to 1,200,000, and has a crystalline melting point of 100° C. or higher or a glass transition point of 100° C. or higher, wherein the ratio of segment A:segment B in the segmented fluoropolymer is 30:70 to 90:10 wt. %.