MEMBRANE-ELEKTRODE UNIT OF A FUEL CELL AND A METHOD FOR THE MANUFACTURE THEREOF

A membrane for a membrane electrode assembly of a fuel cell has a quadrangular shape with two parallel longitudinal sides and two opposite short sides. The membrane can be produced by providing an endless membrane, wherein edges of the endless membrane form the longitudinal sides of the membrane, and processing the endless membrane by making two cuts: a first cut at a first angle to an extension direction and forming a first cut edge, and a second cut at a second angle to the extension direction and forming a second cut edge. The first cut edge and the second cut edge form the short sides of the membrane and at least one of the first and second angles are different from 90°. At least one angle enclosed by one of the short sides and an adjacent longitudinal side is different from 90°.