PROCESS FOR PRODUCING THE CATHODE LAYER OF MOLTEN CARBONATE FUEL CELLS
In order to produce the cathode layer of a molten carbonate fuel cell in which the cathode layer is part of a sandwich structure also comprising a matrix layer and an anode layer, a porous cobalt or iron layer is filled with lithium carbonate, the cobalt or iron layer is oxidized at a temperature below the melting point of the lithium carbonate in an oxidizing atmosphere, so that a cobalt or iron oxide layer is produced, and after the temperature is increased above the lithium carbonate melting point, the cobalt or iron oxide reacts with the molten lithium carbonate, producing lithium cobaltide or lithium ferrite. The thus produced cathode layer allows high current densities with insignificant voltage losses and has an extremely low solubility in molten electrolytes.