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A Multi-Process Cathode Model for MnO2-based Aqueous Zinc-Ion Batteries

Herrmann, Niklas und Horstmann, Birger (2022) A Multi-Process Cathode Model for MnO2-based Aqueous Zinc-Ion Batteries. 18th Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies, 14.-16. Mar. 2022, Hohenkammer.

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Kurzfassung

Rapidly rising electricity prices on the European energy market flared up an accompanying discus-sion about the revival of nuclear power and gas-fired power plants as bridging technologies. This situation emphasises the urgency of powerful and affordable electrochemical energy storage systems for a rapid energy transition. Next-generation storage technologies are in a tight race competing in energy density, environmental safety and cost per capacity. Zinc-based anodes are commercial highly success-ful for several decades, yet there is no commercialised zinc-insertion cathode yet. Manganese dioxide cathodes, which are widely used in alkaline cells, were shown to have a reversible zinc storage capacity in mild electrolytes. This increased the research interest in zinc-ion batteries in the last decade, and many successful systems were proposed. Aqueous metal batteries face a series of challenges. The dynamic electrolyte composition and pH profile heavily influence performance, and many side reactions occur. This contribution presents a thermodynamically consistent dynamic cell model, which considers the electrolyte's complex formation and related transport properties. Additionally, it implements a multi-process model for the MnO2 cathode, reflecting the most reported side reactions in literature, manganese dissolution, and proton co-insertion. We use this to identify well-known experimental characteristics, describe possible pitfalls, and identify goals for further optimising zinc-ion batteries.

elib-URL des Eintrags:https://elib.dlr.de/190922/
Dokumentart:Konferenzbeitrag (Poster)
Titel:A Multi-Process Cathode Model for MnO2-based Aqueous Zinc-Ion Batteries
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Herrmann, NiklasNiklas.Borchers (at) dlr.dehttps://orcid.org/0000-0002-9618-3723NICHT SPEZIFIZIERT
Horstmann, Birgerbirger.horstmann (at) dlr.dehttps://orcid.org/0000-0002-1500-0578NICHT SPEZIFIZIERT
Datum:2022
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Zinc-Ion Batteries, Aqueous Electrolyte, Electrolyte Complexation, Full-Cell Models, Manganese Dioxide Cathodes
Veranstaltungstitel:18th Symposium on Modeling and Experimental Validation of Electrochemical Energy Technologies
Veranstaltungsort:Hohenkammer
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:14.-16. Mar. 2022
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: Ulm
Institute & Einrichtungen:Institut für Technische Thermodynamik > Computergestützte Elektrochemie
Hinterlegt von: Herrmann, Niklas
Hinterlegt am:15 Dez 2022 11:06
Letzte Änderung:15 Dez 2022 11:06

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