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Current Effect on the Performances of All-Solid-State Lithium-Ion Batteries—Peukert’s Law
- Source :
- Batteries, Vol 9, Iss 7, p 370 (2023)
- Publication Year :
- 2023
- Publisher :
- MDPI AG, 2023.
-
Abstract
- The results from measuring the capacity of thin-film solid-state lithium-ion batteries (SSLIBs) Ti|Si@O@Al|LiPON|LiCoO2|Ti, Ti|Si@O@Al|LiPON|LixV2O5|Ti, and Ti|LiPON|LiCoO2|Ti at different charge currents are reported. It is shown that the dependence of the capacity on the current density Q(j) follows Peukert’s law, which is characterized by a low value of Peukert’s exponents in the region of low currents and a high value of the exponents in the region of high currents. Peukert’s exponent for the anode-free cell remains constant through the entire range of current density variation. A model for SSLIB capacity based on the balance of ion (diffusion and drift) and electron currents is proposed. The model predicts a Q(j) dependence well approximating the experimental results and fitting Peukert’s law. The model allows a qualitative interpretation of the change in the Peukert exponent with increasing current density, based on the effect of the charge current saturation.
Details
- Language :
- English
- ISSN :
- 23130105
- Volume :
- 9
- Issue :
- 7
- Database :
- Directory of Open Access Journals
- Journal :
- Batteries
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.65095aa8a2ec4f45a18d4821ed975462
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/batteries9070370