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Area specific resistance of in-situ oxidized Mn-Cu and Mn-Co metal powders as contact layers for the solid oxide cell air side

Abstract

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.
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Category

Academic article

Language

English

Author(s)

  • Belma Talic
  • Claudia Goebel
  • Ilaria Ritucci
  • Åsa Helen Persson
  • Ragnar Kiebach
  • Henrik Lund Frandsen

Affiliation

  • SINTEF Industry / Sustainable Energy Technology
  • Technical University of Denmark

Year

2023

Published in

Journal of the European Ceramic Society

ISSN

0955-2219

Volume

44

Issue

3

Page(s)

1678 - 1687

View this publication at Norwegian Research Information Repository