Abstract: A cell seal for a fuel cell having a support portion and a seal portion. The seal portion includes a sealing material to prevent passage of a fluid. The support portion includes a porous material, for example a fabric, and is configured to impart a mechanical stability to the cell seal. The sealing material of the seal portion penetrates the porous material at least partially and thus connects the seal portion to the support portion. In one version, the support portion is also used to connect different sealing regions mechanically to one another. A fuel cell having such a cell seal, wherein the cell seal is between two bipolar plates, and a method for producing the cell seal, are disclosed.

Abstract: Various embodiments include a method for producing a structure with a cold gas spraying method comprising: providing a carrier with a carrier surface, to which the structure is to be attached by the cold gas spraying method by following a travel path; and providing an element with an element surface different from the carrier surface. The element is arranged in the travel path and/or the travel path is specified such that intersections of the travel path and/or interruptions of the structure are arranged on the element surface.

Abstract: An assembly for an electrochemical device is provided, including a gas diffusion layer and a sealing element produced on the gas diffusion layer. The sealing element includes an inner sealing region fixed to the gas diffusion layer and an outer sealing region connected to the gas diffusion layer via the inner sealing region. The assembly has minimal warpage without the temperature in the injection molding tool having to be lowered and/or a geometric pre-compensation of the warpage of the sealing element in the inner sealing region. The sealing element includes a relief region arranged between the inner and outer sealing regions and a) includes a relief opening extending through the sealing element and/or b) has a smallest height (he), which is smaller than both one fourth of the greatest height (HI) of the inner sealing region and one fourth of the greatest height (HA) of the outer sealing region.

Abstract: A seal with integrated support function for a static axial seal application in the secondary force flux, for a resulting sealing gap, and with variable height. The seal includes a first structure with a first material, and a second structure with a second material. The first and second structures are connected. The first structure has a higher hardness, or Shore A hardness, than the second structure. The first structure has an elongate form, a first and second end, and is insertable lengthwise into a sealing groove. The second structure at least partially encloses the second end and forms a flexible region adjoining the second end, where the seal is compressible in the flexible region and can compensate for differences in height. The seal provides functional integration with integrated support function with a flexible region for bridging large and variable sealing gaps and a sealing function relating to contacting parts.

Abstract: In order to provide an electrochemically active unit for an electrochemical device including a membrane electrode assembly, at least one gas diffusion layer and a seal that is linked to at least one of the at least one gas diffusion layers, in the manufacture whereof as even as possible a construction of the penetration region in which the gas diffusion layer of the electrochemically active unit is penetrated by the sealing material of the seal over the periphery of the gas diffusion layer is achievable, the seal includes a linking region, a distribution region and a connection region that connects the linking region and the distribution region to one another, wherein the connection region has a minimum height that is less than a quarter of the maximum height of the distribution region and less than a quarter of the maximum height of the linking region.

Abstract: An assembly for an electrochemical device is provided, including a gas diffusion layer and a sealing element produced on the gas diffusion layer. The sealing element includes an inner sealing region fixed to the gas diffusion layer and an outer sealing region connected to the gas diffusion layer via the inner sealing region. The assembly has minimal warpage without the temperature in the injection molding tool having to be lowered and/or a geometric pre-compensation of the warpage of the sealing element in the inner sealing region. The sealing element includes a relief region arranged between the inner and outer sealing regions and a) includes a relief opening extending through the sealing element and/or b) has a smallest height (he), which is smaller than both one fourth of the greatest height (H1) of the inner sealing region and one fourth of the greatest height (HA) of the outer sealing region.

Abstract: In order to provide an electrochemically active unit for an electrochemical device including a membrane electrode assembly, at least one gas diffusion layer and a seal that is linked to at least one of the at least one gas diffusion layers, in the manufacture whereof as even as possible a construction of the penetration region in which the gas diffusion layer of the electrochemically active unit is penetrated by the sealing material of the seal over the periphery of the gas diffusion layer is achievable, the seal includes a linking region, a distribution region and a connection region that connects the linking region and the distribution region to one another, wherein the connection region has a minimum height that is less than a quarter of the maximum height of the distribution region and less than a quarter of the maximum height of the linking region.