Process and apparatus for continuously coating a solid electrolyte with a catalytically active metal

A process for continuously coating a solid electrolyte with a catalytically active metal, wherein a solid electrolyte in the form of a sheet having opposite sides is dried, treated in a solution which contains the metal as a salt, then rinsed in distilled water and finally subjected to an electrolysis step in a cell which is fed with distilled water of constant temperature and to which a constant current density is applied, comprising:

• providing a pair of opposed cathode and anode rolls respectively serving as cathode and anode electrodes;
• interposing a felt of cabon between said cathode and anode rolls;
• and
• passing the solid electrolyte through, in a water bath, between said cathode and anode rolls with the felt of carbon interposed between said cathode roll and said electrolyte and the opposite sides of said electrolyte contacting the felt of carbon and the anode roll, respectively.