DAHÉRON, Laurence; DEDRYVÈRE, Rémi; MARTINEZ, Hervé; MÉNÉTRIER, Michel; DENAGE, Cathy; DELMAS, Claude; GONBEAU, Danielle

doi:10.1021/cm702546s

Metadatos

Mostrar el registro completo del ítem

Licencia de uso del documento

DAHÉRON, Laurence
Laboratoire de Chimie théorique et Physico-chimie moléculaire [LCTPCM]

DEDRYVÈRE, Rémi
Laboratoire de Chimie théorique et Physico-chimie moléculaire [LCTPCM]

MARTINEZ, Hervé
Laboratoire de Chimie théorique et Physico-chimie moléculaire [LCTPCM]

Idioma

Article de revue

Este ítem está publicado en

Chemistry of Materials. 2008, vol. 20, n° 2, p. 583-590

American Chemical Society

Resumen en inglés

Lithium deintercalation of LixCoO2 from x = 1 to x ≈ 0 has been carried out electrochemically. The changes in the electronic structure from LiCoO2 to CoO2 have been investigated by X-ray photoelectron spectroscopy (XPS) to bring some new developments about the electron transfer mechanisms upon lithium deintercalation. All available XPS core peaks (Co 2p, Co 3p, Co 3s, O 1s, F 1s, P 2p, C 1s) and valence spectra have been analyzed. The contributions of the electrode material and of the electrode/electrolyte interface have been clearly distinguished. We show that cobalt and oxygen simultaneously undergo a partial oxidation process and that the sole participation of oxygen atoms to the charge transfer process, as it is sometimes assumed, can be excluded. The surface film consists of organic and inorganic species resulting from degradation of the electrolyte.< Leer menos

Palabras clave en inglés

X-ray photoelectron spectroscopy

Electronic structure

Electron

Lithium deintercalation

Transfer mechanisms

Cobalt lithium oxide

Cobalt dioxide

Metadatos

Licencia de uso del documento

Electron transfer mechanisms upon lithium deintercalation from LiCoO2 to CoO2 investigated by XPS

Idioma

Este ítem está publicado en

Resumen en inglés

Palabras clave en inglés

DOI

Orígen

Centros de investigación