ELECTROLYTIC CELL FOR POLYMER ELECTROLYTE MEMBRANE ELECTROLYSIS AND METHOD FOR THE PRODUCTION THEREOF

The invention relates to an electrolytic cell (1) for polymer electrolyte membrane electrolysis with a cathode half-cell (2) and an anode half-cell (3), the cathode half-cell (2) and the anode half-cell (3) being separated from one another by means of a polymer electrolyte membrane (4). The anodic half-cell (3) has a gas diffusion layer (9b). The gas diffusion layer (9b) is made from a fine-meshed metallic carrier material (10). An anodic catalyst layer (12) with an anodic catalyst material (18) is applied onto the polymer electrolyte membrane (4). The anodic catalyst layer (12) is arranged adjacent to the gas diffusion layer (9b), wherein a thin protective layer (14) is applied in each case locally and selectively onto the fine-meshed carrier material (10) in the area of the contact points between the gas diffusion layer (9b) and the adjoining anodic catalyst layer (12). The thin protective layer (14) comprises iridium and/or iridium oxide so that the input of anodic catalyst material (18) into the gas diffusion layer (9b) is inhibited. The invention also relates to a method (100) for producing an electrolytic cell (1) for polymer electrolyte membrane electrolysis.