TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The barrier layer consists of cerium dioxide. The barrier layer is endowed with yttrium, gadolinium, niobium or samarium. The barrier layer covers at least on one side of the ferritic component, as thin, preferably thick film. The barrier layer is not thicker than 10 mu m, preferably thinner than 2 mu m. The ferritic component is a porous metallic substrate and the nickel component is an anode. The ferritic component is an inter-connector and the nickel component is a nickel network. The barrier layer consists of: (calcium, strontium, barium)1-3x/2 (yttrium, lanthanide (ln))x titanium oxide (where Xy is 0-0.1 and/or Xln is 0-0.67); chromium oxide and/or chromium(II, III) oxide, manganese(II, III) oxide; iron(II) oxide and/or iron(II, III) oxide; cerium1-x-y (yttrium, lanthanide)x (titanium, niobium)yO2 (where x is 0-0.5 and y is 0-0.2); lanthanide1-x(strontium, calcium)x (magnesium oxide (mgO3)) aluminum oxide (AlO3), chromium oxide (CrO3) (where x is 0.1-0.5). EXAMPLE - A cerium oxide diffusion barrier layer with a ferritic metal substrate and a sintered nickel yttrium stabilized zirconia anode was manufactured by preparing a powder metallurgical ferritic metal substrate and sintering the metal substrate at 1000degrees C in argon atmosphere for 3 hours and coating the metal substrate with cerium oxide by physical vapor deposition and coating with a sintered nickel yttrium stabilized zirconia screen printing layer and sintering the composite material at 1250degrees C in argon atmosphere for 3 hours and providing a thermally injected electrolytes and providing a screen printed cathode to produce a fuel cell with a 1 mm thick metal substrate from ferritic chromium steel, a 5 mu m thick cerium oxide barrier layer, a 20 mu m thick anode consists of nickel yttrium stabilized zirconia anode, a 60 mu m electrolytes consists of yttrium stabilized zirconia and 60 mu m thick cathode consists of (lanthanum strontium) (cobalt oxide-iron oxide).