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Iron doped manganese cobaltite spinel coatings produced by electrophoretic co-deposition on interconnects for solid oxide cells: Microstructural and electrical characterization
Abstract
We report a systematic microstructural and electrical characterization of iron doped Mn–Co spinel coatings processed by electrophoretic co-deposition of Mn1.5Co1.5O4 and Fe2O3 powders on Crofer 22 APU and AISI 441 steel substrates. Iron addition to Mn–Co spinel coating leads to a reduction of the area specific resistance on both substrates, after 3200 h at 750 °C. The Fe doped Mn–Co coating both leads to a thinner oxide scale and reduces the sub scale oxidation for the Crofer 22 APU substrate. Fe doped Mn–Co on AISI 441 shows both a thicker oxide scale and low area specific resistance values, likely due to a doping effect of the oxide scale by minor alloying elements. The different mechanisms by which iron doping of Mn–Co spinels can influence elemental interdiffusion at the steel-oxide scale-coating interfaces and relative contributions to the overall area specific resistance are evaluated by means of advanced electron microscopy. The promising results are further confirmed in a cell test, where the Fe doped MnCo coated interconnect does not induce any degradation of the oxygen electrode, proving its efficiency.
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Authors (7)
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Elisa Zanchi
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A Sabato
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B Talic
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Grzegorz Cempura dr inż.
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A Boccaccini
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F Smeacetto
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
JOURNAL OF POWER SOURCES
no. 455,
ISSN: 0378-7753 - Language:
- English
- Publication year:
- 2020
- Bibliographic description:
- Zanchi E., Molin S., Sabato A., Talic B., Cempura G., Boccaccini A., Smeacetto F.: Iron doped manganese cobaltite spinel coatings produced by electrophoretic co-deposition on interconnects for solid oxide cells: Microstructural and electrical characterization// JOURNAL OF POWER SOURCES -Vol. 455, (2020), s.22791-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jpowsour.2020.227910
- Verified by:
- Gdańsk University of Technology
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