Fast Charging of Lithium-Ion Batteries While Accounting for Degradation and Cell-to-Cell Variability
Name
Kim_2024_J._Electrochem._Soc._171_090517.pdf
Description
Published version
Size
2.1 MB
Format
Adobe PDF
Checksum (MD5)
a30049f4dce41f29b2acd20c80ff51ec
Author(s)
Kim, Minsu
Schaeffer, Joachim
Berliner, Marc D
Pedret Sagnier, Berta
Bazant, Martin Z
Findeisen, Rolf
Braatz, Richard D
Date Issued
September 2, 2024
Journal
Journal of The Electrochemical Society
Publisher
The Electrochemical Society
Citation
Minsu Kim et al 2024 J. Electrochem. Soc. 171 090517
Version
Final published version
Abstract
Safety and maintaining high performance are key considerations during the operation of lithium-ion batteries. Battery degradation, in particular lithium plating and loss of active material, is often accelerated by fast charging. This study explores a strategy for the design of fast charging protocols that takes into account the influence of the variability between battery cells on factors that can impact degradation. We employ a non-intrusive polynomial chaos expansion to identify the key parameters for each degradation condition. We explore the reduction of battery degradation by adjusting constraints such as the maximum C-rate and voltage. Tight control of the key adjustable parameters contributes significantly to reducing the confidence interval of the degradation factors, allowing reduced charging time with minimal degradation. The application of our approach to two state-dependent fast charging protocols for a LiC6/LiCoO2 battery indicates the value in explicitly accounting for uncertainties when designing charging protocols that minimize degradation.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1149/1945-7111/ad76dd
