001037841 001__ 1037841
001037841 005__ 20250203103251.0
001037841 0247_ $$2datacite_doi$$a10.34734/FZJ-2025-00987
001037841 0247_ $$2URN$$aurn:nbn:de:0001-2501281150356.973657649657
001037841 020__ $$a978-3-95806-797-4
001037841 037__ $$aFZJ-2025-00987
001037841 1001_ $$0P:(DE-Juel1)188581$$aAyhan, Yavuz Selim$$b0$$eCorresponding author$$ufzj
001037841 245__ $$aIntegration of a rib-channel design to improve air-side contacting in solid oxide cell (SOC) stacks$$f- 2024
001037841 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2024
001037841 300__ $$a82
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001037841 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1738049502_7569
001037841 3367_ $$2DRIVER$$adoctoralThesis
001037841 4900_ $$aSchriften des Forschungszentrums Jülich Reihe Energie & Umwelt / Energy & Environment$$v651
001037841 502__ $$aDissertation, RWTH Aachen University, 2024$$bDissertation$$cRWTH Aachen University$$d2024
001037841 520__ $$aEnergy transition worldwide can be realized with the contribution of promising and advanced technologies such as solid oxide cells (SOCs). Although commercial products are on the market, this ceramic-based technology can still be improved to increase both operating efficiency and lifetime, and reduce the cost of the end product. Non-optimal air-side contacting in SOC stacks causes performance loss compared to single-cell measurements and may be avoided by a novel design, which is the direct printing of an air-side electrode contact layer in a rib-channel form. This ceramic layer also provides gas distribution, eliminating the need for machined or stamped gas channels on the metallic interconnect. Since the machining/pressing process is costly and time-consuming, printing this ceramic layer with a novel design might be advantageous in terms of performance enhancement and cost-effectiveness in SOC stacks. To realize the novel idea, stencil printing was used to print ribs from pastes with different recipes and preparation routes. Two different perovskite materials, developed and used in-house, were utilized in the paste preparation. It is observed that changing solid content and binder content by keeping the type of ingredients and the particle size distribution (PSD) within the paste batch the same did not change the rheological behavior. It has been observed that the reason was the lack of a three-dimensional (3D) network within the paste structure which provides structural recovery after the printing. It led to an undesired shape on the printed design because the paste flows and does not retain its printed shape. However, by adding a dispersant and varying the PSD of the powders, the pastes became more controllable, and the influence was directly seen in the shape of printed ribs with sharper edges and flatter surfaces. In addition, rheology results were applied to the printing process to achieve successful printing results, i.e. a delay before separation of the substrate from the stencil was applied according to the timedependent behavior plot obtained from rheology measurements. Thus, ribs with a thickness of about 500 μm with an appropriate surface flatness were successfully printed and characterized by electron microscopy, 3D confocal microscopy, and white light topography. As an outlook, the best-performing design, microstructure, and material combination for the rib-channel form will be investigated. In addition, a stack test consisting of cells with this rib-channel design of the cathode contact layer will be performed and evaluated.
001037841 536__ $$0G:(DE-HGF)POF4-1231$$a1231 - Electrochemistry for Hydrogen (POF4-123)$$cPOF4-123$$fPOF IV$$x0
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001037841 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)188581$$aForschungszentrum Jülich$$b0$$kFZJ
001037841 9131_ $$0G:(DE-HGF)POF4-123$$1G:(DE-HGF)POF4-120$$2G:(DE-HGF)POF4-100$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-1231$$aDE-HGF$$bForschungsbereich Energie$$lMaterialien und Technologien für die Energiewende (MTET)$$vChemische Energieträger$$x0
001037841 9141_ $$y2024
001037841 920__ $$lyes
001037841 9201_ $$0I:(DE-Juel1)IMD-2-20101013$$kIMD-2$$lWerkstoffsynthese und Herstellungsverfahren$$x0
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