MARTIN, Lucile; MARTINEZ, Hervé; ULLDEMOLINS, Michel; PECQUENARD, Brigitte; LE CRAS, Frédéric

doi:10.1016/j.ssi.2012.03.042

Metadatos

Licencia de uso del documento

MARTIN, Lucile
Institut pluridisciplinaire de recherche sur l'environnement et les matériaux [IPREM]
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]

MARTINEZ, Hervé
Institut pluridisciplinaire de recherche sur l'environnement et les matériaux [IPREM]

ULLDEMOLINS, Michel
Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

Idioma

Article de revue

Este ítem está publicado en

Solid State Ionics. 2012, vol. 215, p. 36-44

Elsevier

Resumen en inglés

The effect of vinylenecarbonate (VC) as electrolyteadditive on the properties of the silicon electrode / liquid electrolyteinterface was studied in this paper. Galvanostatic cycling, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used to investigate the SEI layer properties and the morphology at different stages of the cycling of thin film electrodes. The electrochemical performances were drastically improved by the introduction of a few per cent of VC additive. It was found that the SEI layer formed in VC-containing electrolyte has a different chemical composition and better resists to the stress caused by large volume variations associated with lithiation and delithiation reactions. The chemical and topographic modifications of the electrode surface at various stages of cycling are discussed in correlation with the evolution of the reversible capacity over cycling with and without VC. This study highlights the importance of the SEI which governs the electrochemical performances of Si thin film model electrodes.< Leer menos

Palabras clave en italiano

Li-ion batteries

Negative electrode

Surface film

SEI

Silicon thin film

Vinylene carbonate additive

AFM

XPS

Metadatos

Licencia de uso del documento

Evolution of the Si electrode/electrolyte interface in lithium batteries characterized by XPS and AFM techniques: The influence of vinylene carbonate additive

Idioma

Este ítem está publicado en

Resumen en inglés

Palabras clave en italiano

DOI

Orígen

Centros de investigación