Nonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterization
In this work we analyze the local nonlinear electrochemical impedance spectroscopy (NLEIS) response of a lithium-ion battery and estimate model parameters from measured NLEIS data. The analysis assumes a single-particle model including nonlinear diffusion of lithium within the electrode particles an...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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IOP Publishing
2023
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| _version_ | 1826309785955336192 |
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| author | Kirk, TL Lewis-Douglas, A Howey, D Please, CP Chapman, SJ |
| author_facet | Kirk, TL Lewis-Douglas, A Howey, D Please, CP Chapman, SJ |
| author_sort | Kirk, TL |
| collection | OXFORD |
| description | In this work we analyze the local nonlinear electrochemical impedance spectroscopy (NLEIS) response of a lithium-ion battery and estimate model parameters from measured NLEIS data. The analysis assumes a single-particle model including nonlinear diffusion of lithium within the electrode particles and asymmetric charge transfer kinetics at their surface. Based on this model and assuming a moderately-small excitation amplitude, we systematically derive analytical formulae for the impedances up to the second harmonic response, allowing the meaningful interpretation of each contribution in terms of physical processes and nonlinearities in the model. The implications of this for parameterization are explored, including structural identifiability analysis and parameter estimation using maximum likelihood, with both synthetic and experimentally measured impedance data. Accurate fits to impedance data are possible, however inconsistencies in the fitted diffusion timescales suggest that a nonlinear diffusion model may not be appropriate for the cells considered. Model validation is also demonstrated by predicting time-domain voltage response using the parameterized model and this is shown to have excellent agreement with measured voltage time-series data (11.1 mV RMSE). |
| first_indexed | 2024-03-07T07:40:56Z |
| format | Journal article |
| id | oxford-uuid:6c1f4450-6e30-4086-ae14-f81aa6ec2977 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:40:56Z |
| publishDate | 2023 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | oxford-uuid:6c1f4450-6e30-4086-ae14-f81aa6ec29772023-04-28T12:04:14ZNonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterizationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6c1f4450-6e30-4086-ae14-f81aa6ec2977EnglishSymplectic ElementsIOP Publishing2023Kirk, TLLewis-Douglas, AHowey, DPlease, CPChapman, SJIn this work we analyze the local nonlinear electrochemical impedance spectroscopy (NLEIS) response of a lithium-ion battery and estimate model parameters from measured NLEIS data. The analysis assumes a single-particle model including nonlinear diffusion of lithium within the electrode particles and asymmetric charge transfer kinetics at their surface. Based on this model and assuming a moderately-small excitation amplitude, we systematically derive analytical formulae for the impedances up to the second harmonic response, allowing the meaningful interpretation of each contribution in terms of physical processes and nonlinearities in the model. The implications of this for parameterization are explored, including structural identifiability analysis and parameter estimation using maximum likelihood, with both synthetic and experimentally measured impedance data. Accurate fits to impedance data are possible, however inconsistencies in the fitted diffusion timescales suggest that a nonlinear diffusion model may not be appropriate for the cells considered. Model validation is also demonstrated by predicting time-domain voltage response using the parameterized model and this is shown to have excellent agreement with measured voltage time-series data (11.1 mV RMSE). |
| spellingShingle | Kirk, TL Lewis-Douglas, A Howey, D Please, CP Chapman, SJ Nonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterization |
| title | Nonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterization |
| title_full | Nonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterization |
| title_fullStr | Nonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterization |
| title_full_unstemmed | Nonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterization |
| title_short | Nonlinear electrochemical impedance spectroscopy for lithium-ion battery model parameterization |
| title_sort | nonlinear electrochemical impedance spectroscopy for lithium ion battery model parameterization |
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