Procedure for making solid electrolyte as thin layer on porous electrode for fuel-cell

A procedure for making a thin electrolytic layer on a porous electrode includes the of pouring a suspension with electrode particles as the solid component over the electrode. Then the electrode is dried. The diameter of the particles is then chosen so that the layer arising after sintering on the electrode has a medium pore size which is smaller by a factor of at least two than the medium pore size of the electrode. A further identical suspension is poured over the electrode, followed by drying and further sintering. The layer thickness is between one and twenty microns, preferably five microns.