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Copper Iron Conversion Coating for Solid Oxide Fuel Cell Interconnects

Jan Gustav Grolig (Institutionen för kemi och kemiteknik, Oorganisk miljökemi) ; Patrik Alnegren (Institutionen för kemi och kemiteknik, Oorganisk miljökemi) ; Jan Froitzheim (Institutionen för kemi och kemiteknik, Oorganisk miljökemi) ; Jan-Erik Svensson (Institutionen för kemi och kemiteknik, Oorganisk miljökemi)
Journal of Power Sources (0378-7753). Vol. 297 (2015), p. 534-539.
[Artikel, refereegranskad vetenskaplig]

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 % H2O) 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.

Nyckelord: Area specific resistance, Chromium volatilization, Corrosion, Interconnect, Sanergy HT, SOFC, Chromium, Coatings, Copper, Evaporation, Fuel cells, Iron, Metal coatings, Scanning electron microscopy, Area-specific resistances, Chromia layers, Conversion coatings, Electrical resistances, Sofc interconnect, Spinel oxide, Solid oxide fuel cells (SOFC)



Denna post skapades 2015-09-30. Senast ändrad 2015-12-17.
CPL Pubid: 223397

 

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Institutioner (Chalmers)

Institutionen för kemi och kemiteknik, Oorganisk miljökemi

Ämnesområden

Oorganisk kemi

Chalmers infrastruktur