Abstract: The invention relates to a membrane-electrode assembly for a fuel cell with a proton-conducting membrane two catalyst layers adjoining both sides of the membrane, wherein the catalyst layers have an electrically conductive base material and at least one catalytic material deposited on the base material, and two gas diffusion layers adjoining the catalyst layers. The membrane and/or at least one of the catalyst layers and/or at least one of the gas diffusion layers includes at least one hydrogenatable material capable of binding hydrogen in a reversible exothermic hydrogenation operation by forming a hydride, depending on the temperature and/or pressure. The hydrogenatable material can be distributed in the gas diffusion layer and/or in the catalyst layer or can be present as a separate layer on at least one side of the gas diffusion electrode or the membrane.

Abstract: The invention relates to a membrane-electrode assembly (14) for a fuel cell (10) with (a) a proton-conducting membrane (16), (b) two catalyst layers (20a, 20b) adjoining both sides of the membrane (16), wherein the catalyst layers have an electrically conductive base material and at least one catalytic material deposited on the base material, and (c) two gas diffusion layers (22a, 22b) adjoining the catalyst layers. The membrane (16) and/or at least one of the catalyst layers (20a, 20b) and/or at least one of the gas diffusion layers (22a, 22b) includes at least one hydrogenatable material capable of binding hydrogen in a reversible exothermic hydrogenation operation by forming a hydride, depending on the temperature and/or pressure. The hydrogenatable material can be distributed in the gas diffusion layer (22a, 22b) and/or in the catalyst layer (20a, 20b) or can be present as a separate layer (32, 34) on at least one side of the gas diffusion electrode (18a, 18b) or the membrane (16).

Abstract: An electrode paste for manufacturing a catalyst layer for an electrochemical cell, in particular a high-temperature fuel cell having a polymer fuel cell membrane, includes a catalyst material and a polymer solution. In addition to the catalyst material and the polymer solution, the electrode paste includes a solvent and at least one pore-forming material.