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Combined modeling and experimental study of the high-temperature behavior of a lithium-ion cell: Differential scanning calorimetry, accelerating rate calorimetry and external short circuit

  • In this article the high-temperature behavior of a cylindrical lithium iron phosphate/graphite lithium-ion cell is investigated numerically and experimentally by means of differential scanning calorimetry (DSC), accelerating rate calorimetry (ARC), and external short circuit test (ESC). For the simulations a multi-physics multi-scale (1D+1D+1D) model is used. Assuming a two-stepIn this article the high-temperature behavior of a cylindrical lithium iron phosphate/graphite lithium-ion cell is investigated numerically and experimentally by means of differential scanning calorimetry (DSC), accelerating rate calorimetry (ARC), and external short circuit test (ESC). For the simulations a multi-physics multi-scale (1D+1D+1D) model is used. Assuming a two-step electro-/thermochemical SEI formation mechanism, the model is able to qualitatively reproduce experimental data at temperatures up to approx. 200 °C. Model assumptions and parameters could be evaluated via comparison to experimental results, where the three types of experiments (DSC, ARC, ESC) show complementary sensitivities towards model parameters. The results underline that elevated-temperature experiments can be used to identify parameters of the multi-physics model, which then can be used to understand and interpret high-temperature behavior. The resulting model is able to describe nominal charge/discharge operation behavior, long-term calendaric aging behavior, and short-term high-temperature behavior during extreme events, demonstrating the descriptive and predictive capabilities of physicochemical models.show moreshow less

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Metadaten
Author:Christian Kupper, Svenja Spitznagel, Harry Döring, Michael A. Danzer, César Gutierrez, Andriy Kvasha, Wolfgang G. BesslerORCiDGND
Creating Corporation:International Society of Electrochemistry
Publisher:Elsevier Limited
Year of Publication:2019
Language:English
Parent Title (English):Electrochimica Acta
Volume:306
Issue:306
ISSN:0013-4686
First Page:209
Last Page:219
Document Type:Article (reviewed)
Institutes:Hochschule Offenburg / Bibliografie
Release Date:2020/01/13
Licence (German):License LogoEs gilt das UrhG
DOI:https://doi.org/10.1016/j.electacta.2019.03.079