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Investigating the intrinsic properties of cathode active material for Li-ion cells by combining single particle measurements with simulations

Agrawal, Ashutosh und Wiedemann, Johannes und Danner, Timo und Latz, Arnulf und Kopljar, Dennis und Friedrich, Andreas K. (2023) Investigating the intrinsic properties of cathode active material for Li-ion cells by combining single particle measurements with simulations. ADVANCED BATTERY POWER CONFERENCE, 2023-04-26 - 2023-04-28, Aachen, Germany.

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Kurzfassung

A detailed understanding of the intrinsic electrochemical properties of cathode active material is imperative for improving current and developing next-generation Li-ion batteries (LIBs). Conventional methods of electrochemical analysis of novel or optimized active materials involve the study of composite electrodes which contain a mixture of active material, binder, and conductive additive on a metallic current collector (CC) foil. The resulting electrochemical response is convoluted and is a function of various factors such as electrode thickness, porosity and composition, making it difficult to assess the intrinsic nature of the active material [1]. To accurately measure intrinsic material properties, the aforementioned matrix effect needs to be removed. This can be achieved by the development of localized electrochemical probes with which single particle measurements (SPMs) can be performed. Thereby, SPM facilitates the determination of the impact of particle size, shape etc. on electrochemical behavior of a given material. Here, we employ a pipette-based measurement technique called scanning micropipette contact method (SMCM) [2] to study the kinetic and transport properties of active materials. Various electrochemical measurements, such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and rate capability tests, were successfully obtained using the SPM set-up. Similar measurements will be performed on an electrode scale to complement SPM. Parameters derived from these experiments will be used as input for 3D electrochemical simulations on a particle level and subsequently on an electrode level, providing a more thorough insight into the underlying phenomena. Hence, SPM coupled with simulations can serve as a powerful tool to investigate the performance of different types of active materials. References: [1] C. Heubner, U. Langklotz, C. Lämmel, M. Schneider, and A. Michaelis, Electrochimica Acta, vol. 330, p. 135160, 2020. [2] M. E. Snowden, M. Dayeh, N. A. Payne, S. Gervais, J. Mauzeroll, and S. B. Schougaard, Journal of Power Sources, vol. 325, pp. 682–689, 2016.

elib-URL des Eintrags:https://elib.dlr.de/198615/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Investigating the intrinsic properties of cathode active material for Li-ion cells by combining single particle measurements with simulations
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Agrawal, Ashutoshashutosh.agrawal (at) dlr.dehttps://orcid.org/0000-0002-3277-5041NICHT SPEZIFIZIERT
Wiedemann, Johannesjohannes.wiedemann (at) dlr.dehttps://orcid.org/0000-0002-4955-1896NICHT SPEZIFIZIERT
Danner, Timotimo.danner (at) dlr.dehttps://orcid.org/0000-0003-2336-6059NICHT SPEZIFIZIERT
Latz, Arnulfarnulf.latz (at) dlr.dehttps://orcid.org/0000-0003-1449-8172NICHT SPEZIFIZIERT
Kopljar, Dennisdennis.kopljar (at) dlr.dehttps://orcid.org/0000-0002-2228-2016NICHT SPEZIFIZIERT
Friedrich, Andreas K.andreas.friedrich (at) dlr.dehttps://orcid.org/0000-0002-2968-5029NICHT SPEZIFIZIERT
Datum:2023
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Li-ion battery, Single particle measurements, Scanning micropipette contact method, Active material
Veranstaltungstitel:ADVANCED BATTERY POWER CONFERENCE
Veranstaltungsort:Aachen, Germany
Veranstaltungsart:nationale Konferenz
Veranstaltungsbeginn:26 April 2023
Veranstaltungsende:28 April 2023
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, E - Materialen für die elektrochemische Energiespeicherung
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Thermodynamik > Elektrochemische Energietechnik
Institut für Technische Thermodynamik > Computergestützte Elektrochemie
Hinterlegt von: Agrawal, Ashutosh
Hinterlegt am:28 Nov 2023 18:36
Letzte Änderung:24 Apr 2024 20:59

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