Abstract: A method for producing membrane-electrode assemblies (6) for a fuel cell unit (1) as a fuel cell stack (1), comprising the following steps: providing in each case one proton exchange membrane (5), providing in each case one first subgasket (53) as sealing layer (41), providing in each case one second subgasket (54) as sealing layer (41), arranging the in each case one proton exchange membrane (5) between the in each case first and in each case second subgasket (53, 54), connecting the in each case one proton exchange membrane (5) to the in each case first and/or in each case second subgasket (53, 54), such that in each case one layered inner region (38) of the in each case one proton exchange membrane (5) is enclosed by the in each case one first and second subgasket (53, 54) as sealing layers (41), wherein the proton exchange membranes (5), the first subgaskets (53), and the second subgaskets (54) are provided in that they are removed as proton exchange membrane strip (65), first subgasket strip (63), and se

Abstract: The invention relates to a method for producing a multi-layer, in particular five-or six-layer, membrane-electrode arrangement (1) comprising a polymer membrane (2), which arrangement has, in order to form an anode (3) and a cathode (4), a catalyst layer (5, 6) and a gas diffusion layer (7, 8) on both sides. According to the invention, the anode-side catalyst layer (5) is applied to the anode-side gas diffusion layer (7) in a wet-chemical coating method, is initially dried, and is joined to the polymer membrane (2) prior to complete drying.

Abstract: A method for producing membrane-electrode assemblies (6) for a fuel cell unit (1) as a fuel cell stack (1), comprising the following steps: providing in each case one proton exchange membrane (5), providing in each case one first subgasket (53) as sealing layer (41), providing in each case one second subgasket (54) as sealing layer (41), arranging the in each case one proton exchange membrane (5) between the in each case first and in each case second subgasket (53, 54), connecting the in each case one proton exchange membrane (5) to the in each case first and/or in each case second subgasket (53, 54), such that in each case one layered inner region (38) of the in each case one proton exchange membrane (5) is enclosed by the in each case one first and second subgasket (53, 54) as sealing layers (41), wherein the proton exchange membranes (5), the first subgaskets (53), and the second subgaskets (54) are provided in that they are removed as proton exchange membrane strip (65), first subgasket strip (63), and se

Abstract: A battery system includes at least one apparatus configured to increase safety when using at least one component of the battery system. The at least one apparatus is configured to degas the at least one component. The at least one component has a degassing opening. The at least one apparatus is configured to be attached to the at least one component by joining, and the at least one apparatus is configured to cover the degassing opening.

Abstract: A battery system includes at least one apparatus configured to increase safety when using at least one component of the battery system. The at least one apparatus is configured to degas the at least one component. The at least one component has a degassing opening. The at least one apparatus is configured to be attached to the at least one component by joining, and the at least one apparatus is configured to cover the degassing opening.