at Google ScholarTitle data
Rüther, Tom ; Hileman, Wesley ; Plett, Gregory L. ; Trimboli, M. Scott ; Danzer, Michael A.:
Demystifying the Distribution of Relaxation Times : A Simulation-Based Investigation into the Limits and Possibilities of Interpretation for Lithium-Ion Batteries.
In: Journal of the Electrochemical Society.
Vol. 171
(2024)
Issue 6
.
- 060508.
ISSN 1945-7111
DOI: https://doi.org/10.1149/1945-7111/ad4fe5
Abstract in another language
Interpreting impedance spectra of electrochemical systems using the distribution of relaxation times analysis remains an incompletely solved task. This study carefully examines various challenges related to the interpretation of resulting distributions of relaxation times using a closed-form lumped Doyle-Fuller-Newman model. First, the physical and phenomenological interpretation of peaks in the distribution of relaxation times are analyzed through a global sensitivity analysis. Second, the assignment of processes to specific ranges of time constants is investigated. Third, the use of half cells for the characterization of full cells is examined, and the clear limitations associated with the use of lithium metal counter electrodes are pointed out. Furthermore, the study provides first insights into the effects of distributed processes such as charge transfer, double-layer effects, and solid-state diffusion. Several prevailing interpretations in the literature are challenged and new insights and guidelines for interpreting distributions of relaxation times are offered.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Electrical Energy Systems Faculties > Faculty of Engineering Science > Chair Electrical Energy Systems > Chair Electrical Energy Systems - Univ.-Prof. Dr. Michael Danzer Research Institutions Research Institutions > Central research institutes Research Institutions > Central research institutes > Bayerisches Zentrum für Batterietechnik - BayBatt |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 600 Technology, medicine, applied sciences 600 Technology, medicine, applied sciences > 620 Engineering |
| Date Deposited: | 12 Jun 2024 09:15 |
| Last Modified: | 12 Jun 2024 09:15 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/89740 |