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Composite carbone/SnO2 fluoré comme matériau d’électrode négative pour les accumulateurs lithium-ion

Abstract : This thesis work proposes solutions to stabilize the electrochemical performances of SnO2-based negative electrodes for lithium-ion batteries. First of all, the influence of SnO2 nanostructuration and inherent defects on electrochemical performances are studied. Then, carbon/SnO2 composites are synthesized to contain the volume expansion and the influence of the dimensionality of the carbonaceous matrix (1D, 2D, 3D) on the electrochemical performances is demonstrated. Finally, the surface of the material is fluorinated using either molecular fluorination by F2(g) or radical fluorination by thermal decomposition of XeF2(s). The stability of the interface between the material and the electrolyte is then improved and excellent electrochemical properties are obtained.
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https://pastel.archives-ouvertes.fr/tel-03105309
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Submitted on : Monday, January 11, 2021 - 8:51:07 AM
Last modification on : Wednesday, January 13, 2021 - 3:15:26 AM

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2020UPSLM021_archivage.pdf
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  • HAL Id : tel-03105309, version 1

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Charlotte Gervillie. Composite carbone/SnO2 fluoré comme matériau d’électrode négative pour les accumulateurs lithium-ion. Energie électrique. Université Paris sciences et lettres, 2020. Français. ⟨NNT : 2020UPSLM021⟩. ⟨tel-03105309⟩

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