Lee, Wooseok und Lang, Michael und Costa, Rémi und Lee, In-sung und Lee, Young-Sang und Hong, Jongsup (2025) Enhancing uniformity and performance in Solid Oxide Fuel Cells with double symmetry interconnect design. Applied Energy, 381 (125178), Seiten 1-19. Elsevier. doi: 10.1016/j.apenergy.2024.125178. ISSN 0306-2619.
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Kurzfassung
This study presents a novel interconnect design for planar solid oxide fuel cells (SOFCs) to improve the uniformity of operating environments, particularly in temperature, species, and electrochemical reaction distributions. Traditional cross-flow design suffers from asymmetries that lead to non-uniform temperature distributions and uneven fuel distribution, which can degrade stack performance over time. A new design with enhanced symmetry is introduced to address these challenges by positioning gas manifold holes along two diagonal axes. Also, flow and species distribution uniformity are achieved by implementing a flow resistance strategy that adjusts channel widths across the interconnect. Computational simulations using a highly reliable, experimentally validated numerical model confirm that the new design reduces the difference between maximum and minimum values in temperature by 34 %, hydrogen molar fraction in fuel by 13.3 %, and current density (i.e., electrochemical reaction) by 8.7 % compared to the traditional cross-flow design. The design improvements are achieved solely through geometric modifications, without altering material properties or introducing new components, maintaining manufacturability. This design offers the potential for expanding the operational window and improving the overall efficiency of SOFC stacks, contributing to more stable and high-performance energy systems.
elib-URL des Eintrags: | https://elib.dlr.de/211467/ | ||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | Enhancing uniformity and performance in Solid Oxide Fuel Cells with double symmetry interconnect design | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 1 März 2025 | ||||||||||||||||||||||||||||
Erschienen in: | Applied Energy | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 381 | ||||||||||||||||||||||||||||
DOI: | 10.1016/j.apenergy.2024.125178 | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 1-19 | ||||||||||||||||||||||||||||
Verlag: | Elsevier | ||||||||||||||||||||||||||||
ISSN: | 0306-2619 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Solid oxide fuel cell (SOFC) Interconnect design Symmetry enhancement Thermal management Flow distribution Electrochemical uniformity | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||||||
HGF - Programm: | Materialien und Technologien für die Energiewende | ||||||||||||||||||||||||||||
HGF - Programmthema: | Chemische Energieträger | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | E SP - Energiespeicher | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Elektrochemische Prozesse | ||||||||||||||||||||||||||||
Standort: | Stuttgart | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Technische Thermodynamik > Elektrochemische Energietechnik | ||||||||||||||||||||||||||||
Hinterlegt von: | Lang, Dr. Michael | ||||||||||||||||||||||||||||
Hinterlegt am: | 10 Jan 2025 14:09 | ||||||||||||||||||||||||||||
Letzte Änderung: | 10 Jan 2025 14:09 |
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