Two bipolar plates (2) have reshaping areas (4) in an edge area. A sealing device fits between the plates, one of which has a sealing link (7) running parallel to the edge. The sealing link has an outer area with parallel sides and an inner connecting area...

A channel structure sheet (6) is made with surrounding projections (2). In plan view, auxiliary bridging sections (8, 9) connect the channel structures. The sheet is laid onto a gas-impermeable layer, to bond them together. Before or after bonding, the aux...

An electrochemical fuel cell is provided for converting a fuel reactant stream and an oxidant reactant stream to a reaction product and electrical energy. The fuel cell comprises a membrane electrode assembly comprising a first electrode layer and a second...