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Electron Transfer Mechanisms upon Lithium Deintercalation from LiCoO2 to CoO2 Investigated by XPS

Open access
Dahéron, L., Dedryvère, R., Martinez, H., Ménétrier, M., Denage, C., Delmas, C., Gonbeau, D.·2008·Chemistry of Materials

Abstract

Lithium deintercalation of Li x CoO 2 from x = 1 to x ≈ 0 has been carried out electrochemically. The changes in the electronic structure from LiCoO 2 to CoO 2 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.

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Metadata

Authors
Dahéron, L., Dedryvère, R., Martinez, H., Ménétrier, M., Denage, C., Delmas, C., & Gonbeau, D.
Venue
Chemistry of Materials
Published
2007-12-15
Volume
20
Issue
2
Pages
583-590
ISSN
  • 0897-4756 (ISSN-L)
  • 1520-5002
OpenAlex
W2071247948
Cited by
533
References
2
FWCI
6.93
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Electron Transfer Mechanisms upon Lithium Deintercalation from LiCoO2 to CoO2 Investigated by XPS. https://app.cochat.ai/papers/10.1021/cm702546s
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Dahéron, L., Dedryvère, R., Martinez, H., Ménétrier, M., Denage, C., Delmas, C., & Gonbeau, D. (2008). Electron Transfer Mechanisms upon Lithium Deintercalation from LiCoO2 to CoO2 Investigated by XPS. Chemistry of Materials. https://doi.org/10.1021/cm702546s

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