Patent ID: 8962127
Filing Date: 2015-02-24
Classification: C04B,D04H,H01M,Y02E,Y02P,Y10T

Abstract:
1. A nonwoven fabric suitable as a carrier material for separators in lithium batteries or in super capacitors, the nonwoven fabric having a thickness of less than or equal to 30 μm, a maximum tensile load in at least one direction of at least 15 N/5 cm, and a maximum extension in the direction at the maximum tensile load being 35%, a porosity of at least 40% and a mass per unit area of from 3 g/m wherein the nonwoven fabric includes fibers having a melting point greater than 200° C. selected from the group consisting of polyethylene terephthalate and polybutylene terephthalate, and wherein the nonwoven fabric is reinforced using a chemically and/or thermally bonded material selected from binding fibers, melting adhesives, and chemical binding agents.