Direct observation of important morphology and composition changes at the surface of the CuO conversion material in lithium batteries
| hal.structure.identifier | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM] | |
| hal.structure.identifier | Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN] | |
| dc.contributor.author | MARTIN, Lucile | |
| hal.structure.identifier | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM] | |
| dc.contributor.author | MARTINEZ, Hervé | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| hal.structure.identifier | Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN] | |
| dc.contributor.author | POINOT, Delphine | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | PECQUENARD, Brigitte | |
| hal.structure.identifier | Laboratoire d'Innovation pour les Technologies des Energies Nouvelles et les nanomatériaux [LITEN] | |
| dc.contributor.author | LE CRAS, F. | |
| dc.date.issued | 2014 | |
| dc.identifier.issn | 0378-7753 | |
| dc.description.abstractEn | Morphology and composition changes occurring at the surface of CuO thin film electrode, used as conversion material for lithium-ion battery, were investigated at different stages of the electrochemical cycling by atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). Analyses were performed on samples obtained in LiPF6 containing carbonate-based electrolyte and prepared by linear sweep voltammetry. The formation/partial dissolution of a solid electrolyte interphase (SEI) was evidenced by XPS analyses. The SEI layer formed on lithiated CuO thin film during the first reduction between [3.5-0.8] V/Li+/Li is characterized by a LiF-rich inner layer and a Li2CO3-rich outer layer. Furthermore, reduction/oxidation cycles induced important surface morphology modifications. In particular, the growth and then the vanishing of large spherical nodules (∼400 nm in diameter) were observed during the lithium insertion and the subsequent deinsertion. During the twenty first cycles performed, even if a stable electrochemical behavior was shown, breathing of the thin film was also clearly evidenced by AFM images with the appearance and disappearance of numerous cracks as a function of Li removal and Li insertion processes. © 2013 Elsevier B.V. All rights reserved. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Lithium batteries | |
| dc.subject.en | Copper oxide | |
| dc.subject.en | Thin film | |
| dc.subject.en | SEI | |
| dc.subject.en | XPS | |
| dc.subject.en | AFM | |
| dc.title.en | Direct observation of important morphology and composition changes at the surface of the CuO conversion material in lithium batteries | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jpowsour.2013.10.015 | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | Journal of Power Sources | |
| bordeaux.page | 861-873 | |
| bordeaux.volume | 248 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01503976 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01503976v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Power%20Sources&rft.date=2014&rft.volume=248&rft.spage=861-873&rft.epage=861-873&rft.eissn=0378-7753&rft.issn=0378-7753&rft.au=MARTIN,%20Lucile&MARTINEZ,%20Herv%C3%A9&POINOT,%20Delphine&PECQUENARD,%20Brigitte&LE%20CRAS,%20F.&rft.genre=article |
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