The present invention relates to the field of electrochemical cells and
fuel cells, more specifically to polymer-electrolyte-membrane (PEM) fuel
cells and describes a process for the manufacture of
membrane-electrode-assemblies (MEAs) containing five layers. The
five-layer MEA is assembled together by means of a lamination process
involving an adhesive component. The anode gas diffusion layer, the
catalyst-coated membrane and the cathode gas diffusion layer are combined
together by a low temperature/low pressure lamination process. Handling
of the MEAs and assembly of the products into PEMFC and DMFC stacks is
simplified. Less damage and perforation of the catalyst-coated membrane
occurs and thus the performance of the five-layer MEAs is significantly
improved.