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Communication Dans Un Congrès Année : 2022

Modeling the non-linearities of charge-transfers and solid electrolyte interphase resistances for a sodium-ion battery with a hard carbon electrode

Houssam Rabab
  • Fonction : Auteur
Nicolas Damay
  • Fonction : Auteur
Christophe Forgez
  • Fonction : Auteur
Asmae El Mejdoubi
  • Fonction : Auteur

Résumé

Sodium-ion batteries are a promising technology whose performance are getting closer to those of lithium-ion batteries. The electrochemical phenomena are mostly the same for these two technologies, but the sodium-ion battery studied in this paper has a negative electrode made of hard carbon "HC" in which different phenomenon occurs when state of charge "SoC" decreases. In this paper, we characterized this sodium-ion battery thanks to a physic-based model that can represent the non-linearities of the charge transfers and solid electrolyte interphase "SEI" resistances. In this initial study, we found that this model represented accurately the battery non-linearities for high SoC, making it able to characterize its charge transfers and SEI (eg. for diagnosis purpose). However, the model failed to represent the cell behavior below SoC 40-50%, suggesting that it should be improved for batteries with HC electrodes.
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Dates et versions

hal-03758564 , version 1 (23-08-2022)

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  • HAL Id : hal-03758564 , version 1

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Houssam Rabab, Nicolas Damay, Fernanda Vendrame, Christophe Forgez, Asmae El Mejdoubi. Modeling the non-linearities of charge-transfers and solid electrolyte interphase resistances for a sodium-ion battery with a hard carbon electrode. Electrimacs, May 2022, Nancy, France. ⟨hal-03758564⟩
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