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https://doi.org/10.21256/zhaw-22253| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Cycle behaviour of hydrogen bromine redox flow battery cells with bromine complexing agents |
| Autor/-in: | Küttinger, Michael Brunetaud, Ruben Włodarczyk, Jakub K. Fischer, Peter Tübke, Jens |
| et. al: | No |
| DOI: | 10.1016/j.jpowsour.2021.229820 10.21256/zhaw-22253 |
| Erschienen in: | Journal of Power Sources |
| Band(Heft): | 495 |
| Heft: | 229820 |
| Erscheinungsdatum: | 2021 |
| Verlag / Hrsg. Institution: | Elsevier |
| ISSN: | 0378-7753 1873-2755 |
| Sprache: | Englisch |
| Schlagwörter: | Stationary energy storage; Redox flow battery; Bromine; Safety; Bromine complexation; Cell performance |
| Fachgebiet (DDC): | 621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnik |
| Zusammenfassung: | Bromine complexing agents (BCA) are used to improve the safety of aqueous bromine electrolytes versus bromine outgassing in bromine electrolytes. In this work, cycling performance of hydrogen-bromine redox flow battery cells with 1-ethylpyridin-1-ium bromide ([C2Py]Br) as BCA in a bromine electrolyte with a theoretical capacity of 179.6 A h L−1 is investigated for the first time. The BCA leads to increased ohmic overvoltages. One cause of the ohmic drop can be attributed to [C2Py]+ cation interaction with the perfluorosulfonic acid (PFSA) membrane, which results in a drop of its conductivity. The BCA also interacts with bromine in the cell, by forming a non-aqueous fused salt second phase which exhibits a ten times lower conductivity compared to the aqueous electrolyte. A steep rise in cell voltage at the beginning of the charge curve followed by a regeneration of the cell voltage is attributed to this effect. Electrolyte crossover leads to an accumulation of [C2Py]+ in the electrolyte solution and intensifies both adverse processes. Under this condition only 30% of the theoretical electrolyte capacity of 179.6 A h L−1 is available under long term cycle conditions. However, electrolyte capacity is high enough to compete with other flow battery technologies. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/22253 |
| 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) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2021_Kuettinger-etal_Cylce-behaviour-hydrogen-bromine-redox-flow-battery-cells.pdf | 9.99 MB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Küttinger, M., Brunetaud, R., Włodarczyk, J. K., Fischer, P., & Tübke, J. (2021). Cycle behaviour of hydrogen bromine redox flow battery cells with bromine complexing agents. Journal of Power Sources, 495(229820). https://doi.org/10.1016/j.jpowsour.2021.229820
Küttinger, M. et al. (2021) ‘Cycle behaviour of hydrogen bromine redox flow battery cells with bromine complexing agents’, Journal of Power Sources, 495(229820). Available at: https://doi.org/10.1016/j.jpowsour.2021.229820.
M. Küttinger, R. Brunetaud, J. K. Włodarczyk, P. Fischer, and J. Tübke, “Cycle behaviour of hydrogen bromine redox flow battery cells with bromine complexing agents,” Journal of Power Sources, vol. 495, no. 229820, 2021, doi: 10.1016/j.jpowsour.2021.229820.
KÜTTINGER, Michael, Ruben BRUNETAUD, Jakub K. WŁODARCZYK, Peter FISCHER und Jens TÜBKE, 2021. Cycle behaviour of hydrogen bromine redox flow battery cells with bromine complexing agents. Journal of Power Sources. 2021. Bd. 495, Nr. 229820. DOI 10.1016/j.jpowsour.2021.229820
Küttinger, Michael, Ruben Brunetaud, Jakub K. Włodarczyk, Peter Fischer, and Jens Tübke. 2021. “Cycle Behaviour of Hydrogen Bromine Redox Flow Battery Cells with Bromine Complexing Agents.” Journal of Power Sources 495 (229820). https://doi.org/10.1016/j.jpowsour.2021.229820.
Küttinger, Michael, et al. “Cycle Behaviour of Hydrogen Bromine Redox Flow Battery Cells with Bromine Complexing Agents.” Journal of Power Sources, vol. 495, no. 229820, 2021, https://doi.org/10.1016/j.jpowsour.2021.229820.
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