Kube, Alexander und Meyer, Jens und Kopljar, Dennis und Wagner, Norbert und Friedrich, Kaspar Andreas (2021) A segmented cell measuring technique for current distribution measurements in batteries, exemplified by the operando investigation of a Zn-Air battery. Journal of The Electrochemical Society, 168 (120530). Electrochemical Society, Inc.. doi: 10.1149/1945-7111/ac4059. ISSN 0013-4651.
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Offizielle URL: https://iopscience.iop.org/article/10.1149/1945-7111/ac4059
Kurzfassung
A transimpedance amplifier circuit as well as an instrumental amplifier circuit were used to measure current densities of a zinc-air battery with an integrated segmented current collector foil. Error calculation showed that the transimpedance amplifier is superior to the used instrumental amplifier, but both methods provide valuable and consistent results. They both showed comparable results with operando insight into the current distribution of the battery. The knowledge about those distributions is essential to avoid fast degradation of battery materials and irreversible capacity loss due to heterogeneous dissolution of the anode during discharge. In this work we showed that oxygen starvation as well as gas flow rate leads to large current gradients. It was also demonstrated that heterogeneous current distributions on cathode side induces also a heterogenous dissolution behavior on the anode, resulting in irreversible capacity loss.
elib-URL des Eintrags: | https://elib.dlr.de/148425/ | ||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||
Titel: | A segmented cell measuring technique for current distribution measurements in batteries, exemplified by the operando investigation of a Zn-Air battery | ||||||||||||||||||||||||
Autoren: |
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Datum: | 20 Dezember 2021 | ||||||||||||||||||||||||
Erschienen in: | Journal of The Electrochemical Society | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||
Band: | 168 | ||||||||||||||||||||||||
DOI: | 10.1149/1945-7111/ac4059 | ||||||||||||||||||||||||
Verlag: | Electrochemical Society, Inc. | ||||||||||||||||||||||||
ISSN: | 0013-4651 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | Battery, electrochemistry, segmented cell technology, Zn–air battery | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||||||||||||||
HGF - Programm: | Materialien und Technologien für die Energiewende | ||||||||||||||||||||||||
HGF - Programmthema: | Elektrochemische Energiespeicherung | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | E SP - Energiespeicher | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Elektrochemische Speicher | ||||||||||||||||||||||||
Standort: | Stuttgart | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Technische Thermodynamik > Elektrochemische Energietechnik | ||||||||||||||||||||||||
Hinterlegt von: | Kube, Alexander | ||||||||||||||||||||||||
Hinterlegt am: | 11 Mär 2022 09:51 | ||||||||||||||||||||||||
Letzte Änderung: | 16 Mär 2022 09:06 |
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