Method for producing a green paper for producing a gas diffusion layer for a fuel cell

摘要

The invention relates to a method for producing a green paper for producing a gas diffusion layer (GDL) for a fuel cell. The invention additionally relates to a use of an accordingly produced gas diffusion layer (GDL) in a fuel cell. According to the invention, a first paper web preferably loaded with metal powder and/or metal fibers is produced, and a microporous layer (MPL) in the form of at least one coating is applied onto the paper web. The paper web is then subjected to a binder removal process, a sintering process, a coating process, atomic layer deposition (ALD) using thermal ALD methods, and optionally additional process steps in order to obtain the final GDL. After the sintering process, all of the organic components of the green paper are pyrolyzed and thus no longer contained in the GDL, and the GDL consists virtually exclusively of a metal framework.