Oxidation and electrical conductivity Behavior of spinel coatings for metallic interconnects of solid oxide fuel cells

Spinel coatings of Cu-Mn-O and Co-Mn-O were obtained on UNS S43000 stainless steel by oxidation of electroplated metal coatings. It was demonstrated that the coatings can effectively provide a conductive path to the metallic substrate. The area-specific resistance of both Cu-Mn and Co-Mn spinels; was 0.003 Omega.cm(2) after oxidation at 750 degrees C for 1,500 h, compared to 0.189 Omega.cm(2) for the uncoated UNS S43000 sample.