LiCoO2 with double porous structure obtained by electrospray deposition and its evaluation as an electrode for lithium-ion batteries - Physico-chimie des Matériaux et des Electrolytes pour l'Energie Laboratoire - - EA 6299 Accéder directement au contenu
Article Dans Une Revue Journal of Alloys and Compounds Année : 2019

LiCoO2 with double porous structure obtained by electrospray deposition and its evaluation as an electrode for lithium-ion batteries

Résumé

An in-situ temperature-controlled Raman spectroscopy aided unique electrode fabrication technique has been developed for Li-ion battery applications, ensuring superior electrochemical quality of the multi-porous LiCoO2 films with higher stoichiometric purity of high temperature (HT)-LiCoO2 phase, by observing the structural changes during the fabrication process and thus confirming the transformation from the low temperature (LT)-LiCoO2 phase. This much desired simple process is not only free of any sort of binders or carbon additives but also works at atmospheric pressure, leading to a very simple deposition technique using a homemade and inexpensive set-up. Also, the time of depositions were varied and resultant films we investigated for their electrochemical performance. The high-resolution scanning electron microscope (SEM) observation has revealed not only a μm-size porous structure but also three-dimensional cross-link with 10 nm-level pores of the material, which ensured the much-desired porosity for high-performance cathodes.
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Dates et versions

hal-02267978 , version 1 (25-10-2021)

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Paternité - Pas d'utilisation commerciale

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Ilham Bezza, Erwann Luais, Fouad Ghamouss, Mustapha Zaghrioui, François Tran-Van, et al.. LiCoO2 with double porous structure obtained by electrospray deposition and its evaluation as an electrode for lithium-ion batteries. Journal of Alloys and Compounds, 2019, 805, pp.19-25. ⟨10.1016/j.jallcom.2019.07.062⟩. ⟨hal-02267978⟩
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