NOVELTY - The separator plate comprises an electrolyte membrane (3), which is formed by the formation of a material based on carbonated carbon-containing material reinforced with carbon fibers, a structure, and channels (6) for supplying and/or removing of gases and/or fluids, which are applied on a plate surface side. The material comprises metallic and/or semi-metallic component portion and/or particles. The carbon-containing material partially consists of silicon carbide. The carbon fibers present in the material for strengthening are short fibers with an average length of 50 mm.    USE - Separator plate useful as monopolar plate or bipolar plate in a stack of a polymer electrolyte membrane-fuel cell (claimed).    ADVANTAGE - The separator plate can be simply and economically manufactured with good chemical resistance and good stability.    DETAILED DESCRIPTION - The separator plate comprises an electrolyte membrane (3), which is formed by the formation of a material based on carbonated carbon-containing material reinforced with carbon fibers, a structure, and channels (6) for supplying and/or removing of gases and/or fluids, which are applied on a plate surface side. The material comprises metallic and/or semi-metallic component portion and/or particles. The carbon-containing material partially consists of silicon carbide. The carbon fibers present in the material for strengthening are short fibers with an average length of 50 mm and a diameter of 4-12 mu m. The part area of the surface comprises a coating on the plate surface side. The coating consists of chemically resistant and good electrical conductive material and is applied so that it completely seals the surface equipped with the coating. The structure has a cavity (7) and a channel between both surfaces of the plate surface side. An INDEPENDENT CLAIM is included for a method for the production of a separator plate.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of a fuel cell stack.    Electrolyte membrane (3)    Gas diffusion electrode (4)    Monopolar plate (5)    Channel (6)    Cavity. (7)