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Optimization of Material Contrast for Efficient FIB‐SEM Tomography of Solid Oxide Fuel Cells

Meffert, M.; Wankmüller, F.; Störmer, H.; Weber, A.; Lupetin, P.; Ivers‐Tiffée, E.; Gerthsen, D.

Abstract:
Focused ion beam (FIB) – scanning electron microscopy (SEM) serial sectioning tomography has become an important tool for three‐dimensional microstructure reconstruction of solid oxide fuel cells (SOFC) to obtain an understanding of fabrication‐related effects and SOFC performance. By sequential FIB milling and SEM imaging a stack of cross‐section images across all functional SOFC layers was generated covering a large volume of 3.5·10$^{4}$ μm$^{3}$. One crucial step is image segmentation where regions with different image intensities are assigned to different material phases within the SOFC. To analyze all relevant SOFC materials, it was up to now mandatory to acquire several images by scanning the same region with different imaging parameters because sufficient material contrast could otherwise not be achieved. In this work we obtained high‐contast SEM images from a single scan to reconstract all functional SOFC layers consisting of a Ni/Y$_{2}$O$_{3}$‐doped ZrO$_{2}$ (YDZ) cermet anode, YDZ electrolyte and (La,Sr)MnO$_{3}$/YDZ cathode. This was possible by using different, simultaneous read‐out detectors installed in a state‐of‐the‐art scanning electron microscope. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000125532
Veröffentlicht am 30.10.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Werkstoffe der Elektrotechnik (IAM-WET)
Laboratorium für Elektronenmikroskopie (LEM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2020
Sprache Englisch
Identifikator ISSN: 1615-6846, 1615-6854
KITopen-ID: 1000125532
Erschienen in Fuel cells
Band 20
Heft 5
Seiten 580–591
Schlagwörter Backscattered Electron, Detectors, FIB-SEM Tomography, Material Contrast, Secondary Electron, Solid Oxide Fuel Cell
Nachgewiesen in Scopus
Web of Science
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