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Single Particle Measurement to Determine the Intrinsic Properties of Cathode Active Material in Li-Ion Batteries

Agrawal, Ashutosh und Kopljar, Dennis und Wagner, Norbert und Friedrich, Kaspar Andreas (2022) Single Particle Measurement to Determine the Intrinsic Properties of Cathode Active Material in Li-Ion Batteries. IMLB 2022, 2022-06-26 - 2022-07-01, Sydney, Australia.

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Kurzfassung

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 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 the material. Here, we employ a pipette-based technique called scanning micropipette contact method (SMCM) [2] to study the kinetic and transport properties of active materials through various electrochemical measurement techniques. As a first step, for validation of the experimental set-up, cyclic voltammetry (CV) measurements with different active materials were performed. Figure 1-B shows exemplary CV data for Li(Ni1/3Mn1/3Co1/3)O2 (NMC) and LiFePO4 (LFP) micro-particles, where the redox peaks represent typical potential values for the respective material. Subsequently, lithium nickel manganese oxide (LNMO) with varying particle properties will be characterized to derive the relationship between synthesis parameters, material properties and electrochemical behavior. The measurements will serve as input for single particle simulations at a later stage providing insights into the underlying phenomena. 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/189822/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Single Particle Measurement to Determine the Intrinsic Properties of Cathode Active Material in Li-Ion Batteries
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Agrawal, AshutoshAshutosh.Agrawal (at) dlr.dehttps://orcid.org/0000-0002-3277-5041NICHT SPEZIFIZIERT
Kopljar, DennisDennis.Kopljar (at) dlr.dehttps://orcid.org/0000-0002-2228-2016NICHT SPEZIFIZIERT
Wagner, NorbertNorbert.Wagner (at) dlr.dehttps://orcid.org/0000-0002-2596-8689NICHT SPEZIFIZIERT
Friedrich, Kaspar AndreasAndreas.Friedrich (at) dlr.dehttps://orcid.org/0000-0002-2968-5029NICHT SPEZIFIZIERT
Datum:2022
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
Veranstaltungstitel:IMLB 2022
Veranstaltungsort:Sydney, Australia
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:26 Juni 2022
Veranstaltungsende:1 Juli 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, E - Materialen für die elektrochemische Energiespeicherung
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Thermodynamik > Elektrochemische Energietechnik
Hinterlegt von: Agrawal, Ashutosh
Hinterlegt am:18 Nov 2022 11:42
Letzte Änderung:24 Apr 2024 20:51

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