Lightweight needle-fabricated fabric and method for its production and its use in diffusion layers for fuel cells

摘要

The present invention relates to a fabric comprising carbon fibers, wherein the fabric is 40 to 100 g / ^{m 2,} preferably 40 and 80 g / ^{m 2,} in particular having a mass per unit area in the range of 60~80g / ^{m 2} And the fabric includes staple fibers, and the staple fibers extend from a yarn constituting the starting fabric and extend in a direction not parallel to the direction of the starting yarn, and / or The fabric is needled. The invention also relates to the use of this fabric in a diffusion layer for fuel cells and to a method for producing this diffusion layer.