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Seng Chan, Hoon ; Bläubaum, Lars ; Vijayshankar, Dandapani ; Röder, Fridolin ; Nowak, Christine ; Weber, André ; Kwade, Arno ; Krewer, Ulrike:
Revealing the Impact of Particle Size Distribution on Ageing of Lithium‐Ion Batteries with Frequency Response Analysis.
In: Batteries & Supercaps.
Bd. 6
(2023)
Heft 10
.
- e202300203.
ISSN 2566-6223
DOI: https://doi.org/10.1002/batt.202300203
Abstract
In-depth analyses, including discharge behaviour, electrochemical impedance analysis, and for the first time, nonlinear frequency response analysis, are conducted on the ageing of negative electrodes with varying particle size distribution. The electrode-resolved analysis is used to distinguish the kinetic and transport losses at the respective electrodes. For fine to medium-sized particles at the negative electrode, ageing impacts are found more on the positive electrode: the impedance and nonlinear responses increase, suggesting that the charge transfer process at the positive electrode is worsened. Meanwhile, for coarse and broad negative particles, the impedance and nonlinear responses at negative electrodes decrease due to improved kinetics from micro-cracking. The second harmonic reveals a change in the nature of the charge transfer during ageing: the charge transfer process at the positive electrode becomes asymmetric for fine and medium-sized negative particles. Vice versa, the charge transfer process at the negative electrode becomes symmetric for coarse and broad negative particles.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Juniorprofessur Methoden des Batteriemanagements > Juniorprofessur Methoden des Batteriemanagements - Juniorprof. Dr.-Ing. Fridolin Röder Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayerisches Zentrum für Batterietechnik - BayBatt |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 15 Mär 2024 07:10 |
| Letzte Änderung: | 15 Mär 2024 07:10 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/88877 |