X-Ray Photoelectron Spectroscopy investigations of carbon-coated Li<sub>x</sub>FePO<sub>4</sub> materials
| hal.structure.identifier | Institut pluridisciplinaire de recherche sur l'environnement et les matériaux [IPREM] | |
| dc.contributor.author | DEDRYVÈRE, Rémi | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MACCARIO, Magalie | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CROGUENNEC, Laurence | |
| hal.structure.identifier | Laboratoire Composants pour l?Energie | |
| dc.contributor.author | LE CRAS, Frédéric | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| hal.structure.identifier | Institut pluridisciplinaire de recherche sur l'environnement et les matériaux [IPREM] | |
| dc.contributor.author | GONBEAU, Danielle | |
| dc.date.issued | 2008 | |
| dc.identifier.issn | 0897-4756 | |
| dc.description.abstractEn | Because of its surface sensitivity, X-ray photoelectron spectroscopy allowed us to access the mechanisms at the very surface of 100 nm diameter carbon-coated LiFePO<sub>4</sub> nanoparticles. A continuous evolution of the Fe<sup>3+</sup>/Fe<sup>2+</sup> ratio was observed at the surface of the particles upon charge and discharge, in good agreement with the change in the average lithium content of Li<sub><i>x</i></sub>FePO<sub>4</sub> electrode material. These results support these models considering migration of a reaction front along the <i>a</i>-axis inside the cristallites vs. the shrinking-core model, to describe lithium (de)intercalation in LiFePO<sub>4</sub>. XPS analyses showed also that electrode/electrolyte interface phenomena are minimized using carbon-coated LiFePO<sub>4</sub> particles as positive electrode material vs LiCoO<sub>2</sub> for instance, despite the nanometric size of the particles. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.subject.en | Carbon | |
| dc.subject.en | Lithium batteries | |
| dc.subject.en | X-ray | |
| dc.subject.en | Photoelectron spectroscopy | |
| dc.title.en | X-Ray Photoelectron Spectroscopy investigations of carbon-coated Li<sub>x</sub>FePO<sub>4</sub> materials | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/cm801995p | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Chemistry of Materials | |
| bordeaux.page | 7164-7170 | |
| bordeaux.volume | 20 | |
| bordeaux.issue | 22 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00385661 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00385661v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20of%20Materials&rft.date=2008&rft.volume=20&rft.issue=22&rft.spage=7164-7170&rft.epage=7164-7170&rft.eissn=0897-4756&rft.issn=0897-4756&rft.au=DEDRYV%C3%88RE,%20R%C3%A9mi&MACCARIO,%20Magalie&CROGUENNEC,%20Laurence&LE%20CRAS,%20Fr%C3%A9d%C3%A9ric&DELMAS,%20Claude&rft.genre=article |
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