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Frequency domain non-linear characterisation and analysis of lithium-ion battery electrodes
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Fan, Chuanxin, O'Regan, K., Li, Liuying, Kendrick, E. and Widanage, Widanalage Dhammika (2021) Frequency domain non-linear characterisation and analysis of lithium-ion battery electrodes. Journal of Energy Storage, 36 . 102371. doi:10.1016/j.est.2021.102371
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WRAP-Frequency-domain-non-linear-characterisation-analysis-lithium-ion-electrodes-2021.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only until 31 January 2022. Contact author directly, specifying your specific needs. - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (7Mb) |
Official URL: https://doi.org/10.1016/j.est.2021.102371
Abstract
As an electrochemical system, the current voltage relationship of a lithium-ion battery is non-linear. The accuracy of conventional models for lithium-ion cells always suffer from non-linear dynamic behavior, especially at low SoC levels and high current levels, which limits practical applications of battery models in reality. In-depth understanding and characterization of the non-linear relationship can provide valuable insight to improve the accuracy of battery modeling. In this paper, a frequency domain non-linearity characterization approach using odd random-phase multisines signals is performed on a three-electrode experimental set-up of a commercial 5Ah cylindrical 21700 cell. This allowed the distortions towards the full-cell voltage to be separated into the corresponding electrodes and identify the nature of non-linearity as odd or even order. The results demonstrate that the even order non-linearity from the cathode is the main contributor towards the full-cell voltage of the lithium-ion battery while the non-linearity from the anode starts to dominate at very low (
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | |||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | |||||||||
| Library of Congress Subject Headings (LCSH): | Lithium ion batteries , Storage batteries , Electric batteries -- Electrodes | |||||||||
| Journal or Publication Title: | Journal of Energy Storage | |||||||||
| Publisher: | Elsevier | |||||||||
| ISSN: | 2352-152X | |||||||||
| Official Date: | April 2021 | |||||||||
| Dates: |
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| Volume: | 36 | |||||||||
| Article Number: | 102371 | |||||||||
| DOI: | 10.1016/j.est.2021.102371 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| RIOXX Funder/Project Grant: |
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