Copper Iron Conversion Coating for Solid Oxide Fuel Cell Interconnects
Journal article, 2015
A conversion coating of iron and copper was investigated with the purpose of increasing the performance of Sanergy HT as a potential SOFC interconnect material. Samples were exposed to a simulated cathode atmosphere (air, 3 % H
2
O) for durations of up to 1000 h at 850 °C. Their performance in terms of corrosion, chromium evaporation and electrical resistance (ASR) was monitored and compared to uncoated and cobalt-coated Sanergy HT samples. The copper iron coating had no negative effects on corrosion protection and decreased chromium evaporation by about 80%. An Area Specific Resistance (ASR) of 10 mΩcm2 was reached after 1000 h of exposure. Scanning Electron Microscopy revealed well adherent oxide layers comprised of an inner chromia layer and an outer spinel oxide layer.
Metal coatings
Electrical resistances
Evaporation
Solid oxide fuel cells (SOFC)
Corrosion
Chromia layers
Sanergy HT
Chromium volatilization
Conversion coatings
Coatings
Copper
Scanning electron microscopy
Chromium
Interconnect
SOFC
Area-specific resistances
Area specific resistance
Spinel oxide
Sofc interconnect
Fuel cells
Iron
Author
Jan Gustav Grolig
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Patrik Alnegren
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Jan Froitzheim
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Jan-Erik Svensson
Chalmers, Chemistry and Chemical Engineering, Energy and Material
Journal of Power Sources
0378-7753 (ISSN)
Vol. 297 534-539Subject Categories
Inorganic Chemistry
DOI
10.1016/j.jpowsour.2015.06.139