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, Environmental Inorganic Chemistry

Patrik Alnegren

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Jan Froitzheim

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Jan-Erik Svensson

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Environmental Inorganic Chemistry

Journal of Power Sources

0378-7753 (ISSN)

Vol. 297 534-539

Subject Categories

Inorganic Chemistry

DOI

10.1016/j.jpowsour.2015.06.139

More information

Created

10/8/2017