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Article Dans Une Revue Journal of Applied Electrochemistry Année : 2023

A quantitative and qualitative study of gas generation observed in LiFePO$_4$-TiNb$_2$O$_7$ cells

Résumé

Since 20 years, titanium oxide materials, and in particular lithium titanate spinel Li$_4$Ti$_5$O$_{12}$ (LTO), were considered as promising negative electrode materials for lithium-ion cells. In the case of the TiNb$_2$O$_7$ compound (TNO), which has a larger theoretical lithiation capacity of 388 mAh g$^{-1}$, few studies have focused on the outgassing of the material. In this work, we quantified the volume produced as a function of different cycling parameters and then characterized the produced species and show a prevalence of H$_2$ gas. The use of carbon coating as a mitigation strategy and its limitation is also discussed.
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Dates et versions

cea-04337313 , version 1 (12-12-2023)

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Benjamin Mercier-Guyon, Jean-François Colin, Irina Profatilova, Sebastien Martinet. A quantitative and qualitative study of gas generation observed in LiFePO$_4$-TiNb$_2$O$_7$ cells. Journal of Applied Electrochemistry, 2023, ⟨10.1007/s10800-023-02007-6⟩. ⟨cea-04337313⟩
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