Patent ID: 7147959
Filing Date: 2006-12-12
Classification: H01M,Y02E,Y02P

Abstract:
1. A process for manufacturing a five-layer membrane-electrode-assembly, wherein said membrane-electrode-assembly comprises an anode gas diffusion layer, an anode catalyst layer, an ionomer membrane, a cathode catalyst layer and a cathode gas diffusion layer, wherein said anode catalyst layer, said ionomer membrane and said cathode catalyst layer are each part of a catalyst-coated membrane and wherein each of the diffusion layers and the catalyst-coated membrane have an active area, said process comprising: a. applying an adhesive component to at least one of the components selected from the group consisting of said anode gas diffusion layer, said cathode gas diffusion layer and said catalyst-coated membrane, in a manner so that the adhesive component occupies between 1 and 20% of the active area of the anode gas diffusion layer, the cathode gas diffusion layer, or the catalyst-coated membrane; and b. laminating said anode gas diffusion layer, said cathode gas diffusion layer and said catalyst-coated membrane.