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https://doi.org/10.21256/zhaw-26051| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Modeling the impedance response and steady state behaviour of porous CGO-based MIEC anodes |
| Autor/-in: | Marmet, Philip Holzer, Lorenz Grolig, Jan G. Bausinger, Holger Mai, Andreas Brader, Joseph M. Hocker, Thomas |
| et. al: | No |
| DOI: | 10.1039/D1CP01962G 10.21256/zhaw-26051 |
| Erschienen in: | Physical Chemistry Chemical Physics |
| Band(Heft): | 23 |
| Heft: | 40 |
| Seite(n): | 23042 |
| Seiten bis: | 23074 |
| Erscheinungsdatum: | 2021 |
| Verlag / Hrsg. Institution: | Royal Society of Chemistry |
| ISSN: | 1463-9076 1463-9084 |
| Sprache: | Englisch |
| Schlagwörter: | SOFC; Multiphysics modeling; MIEC; CGO; Electrochemical impedance spectroscopy; Chemical capacitance |
| Fachgebiet (DDC): | 621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnik |
| Zusammenfassung: | Mixed ionic and electronic conducting (MIEC) materials recently gained much interest for use as anodes in solid oxide fuel cell (SOFC) applications. However, many processes in MIEC-based porous anodes are still poorly understood and the appropriate interpretation of corresponding electrochemical impedance spectroscopy (EIS) data is challenging. Therefore, a model which is capable to capture all relevant physico-chemical processes is a crucial prerequisite for systematic materials optimization. In this contribution we present a comprehensive model for MIEC-based anodes providing both the DC-behaviour and the EIS-spectra. The model enables one to distinguish between the impact of the chemical capacitance, the reaction resistance, the gas impedance and the charge transport resistance on the EIS-spectrum and therewith allows its appropriate interpretation for button cell conditions. Typical MIEC-features are studied with the model applied to gadolinium doped ceria (CGO) anodes with different microstructures. The results obtained for CGO anodes reveal the spatial distribution of the reaction zone and associated transport distances for the charge carriers and gas species. Moreover, parameter spaces for transport limited and surface reaction limited situations are depicted. By linking bulk material properties, microstructure effects and the cell design with the cell performance, we present a way towards a systematic materials optimization for MIEC-based anodes. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/26051 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | CC BY 4.0: Namensnennung 4.0 International |
| Departement: | School of Engineering |
| Organisationseinheit: | Institute of Computational Physics (ICP) |
| Publiziert im Rahmen des ZHAW-Projekts: | Versatile oxide fuel cell microstructures employing WGS active titanate anode current collectors compatible to ferritic stainless steel interconnects (VOLTA) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2021_Marmet-etal_Impedance-repsonse-steady-state-behaviour-modeling.pdf | 8.27 MB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Marmet, P., Holzer, L., Grolig, J. G., Bausinger, H., Mai, A., Brader, J. M., & Hocker, T. (2021). Modeling the impedance response and steady state behaviour of porous CGO-based MIEC anodes. Physical Chemistry Chemical Physics, 23(40), 23042–23074. https://doi.org/10.1039/D1CP01962G
Marmet, P. et al. (2021) ‘Modeling the impedance response and steady state behaviour of porous CGO-based MIEC anodes’, Physical Chemistry Chemical Physics, 23(40), pp. 23042–23074. Available at: https://doi.org/10.1039/D1CP01962G.
P. Marmet et al., “Modeling the impedance response and steady state behaviour of porous CGO-based MIEC anodes,” Physical Chemistry Chemical Physics, vol. 23, no. 40, pp. 23042–23074, 2021, doi: 10.1039/D1CP01962G.
MARMET, Philip, Lorenz HOLZER, Jan G. GROLIG, Holger BAUSINGER, Andreas MAI, Joseph M. BRADER und Thomas HOCKER, 2021. Modeling the impedance response and steady state behaviour of porous CGO-based MIEC anodes. Physical Chemistry Chemical Physics. 2021. Bd. 23, Nr. 40, S. 23042–23074. DOI 10.1039/D1CP01962G
Marmet, Philip, Lorenz Holzer, Jan G. Grolig, Holger Bausinger, Andreas Mai, Joseph M. Brader, and Thomas Hocker. 2021. “Modeling the Impedance Response and Steady State Behaviour of Porous CGO-Based MIEC Anodes.” Physical Chemistry Chemical Physics 23 (40): 23042–74. https://doi.org/10.1039/D1CP01962G.
Marmet, Philip, et al. “Modeling the Impedance Response and Steady State Behaviour of Porous CGO-Based MIEC Anodes.” Physical Chemistry Chemical Physics, vol. 23, no. 40, 2021, pp. 23042–74, https://doi.org/10.1039/D1CP01962G.
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