CATALYST LAYER FOR USE IN A FUEL CELL, AND METHOD FOR THE PRODUCTION THEREOF

摘要

The method involves applying a layer with a thickness greater than 5 micrometers and a catalyst material charge of less than 0.1 milligram per square centimeter on a gas diffusion layer. The layer is loaded with catalyst e.g. platinum particles. Another layer with a thickness less than 5 micrometer and catalyst material charge of greater than 1 milligram per square centimeter is attached to the former layer. The latter layer is loaded with the catalyst and is applied on a polymer membrane. The gas diffusion layer is pressed on the membrane. An independent claim is also included for a gas diffusion electrode comprising layers.