Working Paper Article Version 1 This version is not peer-reviewed

Manganese Cobalt-Based Spinel Coatings Processed by Electro-Phoretic Deposition Method: The Influence of Sintering on Degadation Issues of Solid Oxide Cell Oxygen Electrodes at 750 °C

Version 1 : Received: 31 May 2021 / Approved: 1 June 2021 / Online: 1 June 2021 (12:00:27 CEST)

How to cite: Zanchi, E.; Ignaczak, J.; Kamecki, B.; Jasinski, P.; Molin, S.; Boccaccini, A.R.; Smeacetto, F. Manganese Cobalt-Based Spinel Coatings Processed by Electro-Phoretic Deposition Method: The Influence of Sintering on Degadation Issues of Solid Oxide Cell Oxygen Electrodes at 750 °C. Preprints 2021, 2021060031 Zanchi, E.; Ignaczak, J.; Kamecki, B.; Jasinski, P.; Molin, S.; Boccaccini, A.R.; Smeacetto, F. Manganese Cobalt-Based Spinel Coatings Processed by Electro-Phoretic Deposition Method: The Influence of Sintering on Degadation Issues of Solid Oxide Cell Oxygen Electrodes at 750 °C. Preprints 2021, 2021060031

Abstract

This paper seeks to examine how the Mn-Co spinel interconnect coating microstructure can in-fluence the Cr contamination in an oxygen electrode of intermediate temperature Solid Oxide Cells at the operating temperature of 750 °C. A Mn-Co spinel coating is processed on Crofer 22 APU substrates by electrophoretic deposition and subsequently sintered following both the one-step and two-step sintering, in order to obtain significantly different densification levels. The electrochemical characterization is performed on anode supported cells with a LSCF cathode. The cells were aged prior to the electrochemical characterization in contact with the spinel coated Crofer 22 APU at 750 °C for 250 hours. Current-voltage and impedance spectra of the cells were measured after the exposure with the interconnect. Post-mortem analysis of the interconnect and the cell was carried out in order to assess the Cr retention capability of coatings with different microstructures.

Subject Areas

electrophoretic deposition; manganese cobalt spinel; Solid Oxide Cell; chromium poisoning

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