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Multi-scale characterization of ceramic inert-substrate-supported and co-sintered solid oxide fuel cells

Wankmüller, Florian 1; Meffert, Matthias 2; Russner, Niklas 1; Weber, André 1; Schmieg, Johannes 1,2; Störmer, Heike 2; Dickel, Thorsten; Lupetin, Piero; Maier, Nicolas; Gerthsen, Dagmar 2; Ivers-Tiffée, Ellen 1
1 Institut für Angewandte Materialien - Werkstoffe der Elektrotechnik (IAM-WET), Karlsruher Institut für Technologie (KIT)
2 Laboratorium für Elektronenmikroskopie (LEM), Karlsruher Institut für Technologie (KIT)


Understanding cell performance is essential for selecting cell components and the processing parameters for solid oxide fuel cells. The scale of relevant microstructural features in electrodes, electrolyte and supporting substrate covers several orders of magnitude. This contribution will demonstrate how advanced correlative multi-scale tomography can be used to identify those parameters: ranging from millimeter to nanometer scale. We employ optical microscopy, X-ray computed tomography (μ-CT), focused ion beam-scanning electron microscopy tomography and energy-dispersive X-ray spectroscopy– scanning transmission electron microscopy. Additional investigations by selected area electron diffraction allow a determination of the underlying crystal structures. An SOFC design based on the co-sintering of an inert substrate with various functional layers on top is used as a blueprint, allowing further methodological development. The effect of interdiffusion between phases and development of secondary phases on microstructure and chemical composition will be shown. Furthermore, porosity and tortuosity extracted individually from all porous layers will allow modeling of gas diffusion loss contributions within the co-fired cell structure. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000120629
Veröffentlicht am 28.06.2020
DOI: 10.1007/s10853-020-04873-3
Zitationen: 6
Web of Science
Zitationen: 5
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Elektrochemische Technologien (IAM-ET1)
Institut für Angewandte Materialien - Werkstoffe der Elektrotechnik (IAM-WET)
Laboratorium für Elektronenmikroskopie (LEM)
Universität Karlsruhe (TH) – Zentrale Einrichtungen (Zentrale Einrichtungen)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2020
Sprache Englisch
Identifikator ISSN: 0022-2461, 1573-4803
KITopen-ID: 1000120629
Erschienen in Journal of materials science
Verlag Springer
Band 55
Heft 25
Seiten 11120–11136
Vorab online veröffentlicht am 03.06.2020
Nachgewiesen in Dimensions
Web of Science
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