Area specific resistance of in-situ oxidized Mn-Cu and Mn-Co metal powders as contact layers for the solid oxide cell air side
Talic, Belma; Goebel, Claudia; Ritucci, Ilaria; Persson, Åsa Helen; Kiebach, Ragnar; Frandsen, Henrik Lund
Peer reviewed, Journal article
Published version
Permanent lenke
https://hdl.handle.net/11250/3126169Utgivelsesdato
2023Metadata
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Originalversjon
Journal of the European Ceramic Society. 2023, 44 (3), 1678-1687. 10.1016/j.jeurceramsoc.2023.10.055Sammendrag
Stacking of solid oxide cells (SOC) requires that a robust and durable electrical contact is established between the cell and the interconnect. In this work, we present a contact layer solution for the SOC air side based on the concept of reactive oxidative bonding in which metallic Mn-Co and Mn-Cu particles are oxidized in-situ during stack initiation or operation to form robust well-conductive spinel oxides. The long-term (3000 h) stability of the new contact layers is evaluated by measuring the area specific resistance (ASR) during aging in air at 750 °C and 850 °C, and during thermal cycling. Both Mn-Co and Mn-Cu layers are found to be well compatible with a CeCo coated 441 steel interconnect material, and do not significantly contribute to the resistance across the stack element. The resistance is dominated by the coated steel.