Electrochemical Modeling of Fast Charging in Batteries
Date
2024-04-18
Journal Title
Journal ISSN
Volume Title
Publisher
Advanced Energy Materials
Abstract
The acceleration of fast charging capabilities has emerged as a pivotal objective within the realms of the battery, electric vehicle, and energy storage sectors. However, the classical electrochemical models are not able to describe voltages of the cell (Ucell), anode (Ua), and cathode (Uc) at high C-rates. Herein, Ucell, Ua,, and Uc are experimentally obtained under various C-rates (0.1–2C) and identified the charge transfer resistance of the cathode (RCT,c) as the primary rate-limiting factor. Thus, the anode is established as a multi-scale coupling model with Fick's law and phase separation model applied, to discuss their effect on Ua and Li-ion concentration prediction. 2D reconstruction structures for the cathode is established with RCT,c effect considered. Finally, the Ua, Uc, and Ucell are successfully predicted at different C-rates. Results propose an accurate and versatile electrochemical model and highlight the importance of considering limiting factors in electrochemical modeling for fast charging.
Description
This is the peer reviewed version of the following article: X. Duan, D. Hu, W. Chen, J. Li, L. Wang, S. Sun, J. Xu, Electrochemical Modeling of Fast Charging in Batteries. Adv. Energy Mater. 2024, 2400710. https://doi.org/10.1002/aenm.202400710, which has been published in final form at https://doi.org/10.1002/aenm.202400710. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. © 2024 Wiley-VCH GmbH. This article will be embargoed until 04/18/2025.
Keywords
charge transfer resistance, electrochemical model, fast charging, lithium-ion battery, phase separation
Citation
X. Duan, D. Hu, W. Chen, J. Li, L. Wang, S. Sun, J. Xu, Electrochemical Modeling of Fast Charging in Batteries. Adv. Energy Mater. 2024, 2400710. https://doi.org/10.1002/aenm.202400710