C-containing LiFePO4 materials - Part II: Electrochemical characterization
| 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 | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| hal.structure.identifier | Centre de Ressources en Microscopie Electronique et Microanalyse | |
| dc.contributor.author | WEILL, François | |
| 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 | |
| dc.date.issued | 2008 | |
| dc.identifier.issn | 0167-2738 | |
| dc.description.abstractEn | A series of carbon-coated olivine phase (C-LiFePO4) was synthesized under argon by mechano-chemical activation, with two thermal-treatments ("slow" or "fast") and two temperatures (575 °C or 800 °C). In spite of similar chemical and structural properties, they showed rather good, but very different, electrochemical behaviors in long range cycling or high rate conditions. All the studied C-LiFePO4 materials were characterized by an inhomogeneous agglomerates size distribution with small primary particles around 100 nm in diameter and by specific surface areas around 20 m2/g. The electronic properties were shown to be highly dependant on the synthesis conditions: as expected the higher the thermal-treatment temperature and the longer the thermal treatment were, the better the degradation of the carboneous precursor and thus the higher the electronic conductivity of the C-LiFePO4 material. This study suggests that good electrochemical performances at high rate and during a long range cycling at constant rate imply, for a given composite, a good coating with high electronic conductivity and small primary particles (here around 100 nm in diameter). The material obtained at 800 °C with the short thermal-treatment synthesis (15 min) satisfies these requirements. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Electrochemical characterization | |
| dc.subject.en | Electronic conductivity | |
| dc.subject.en | LiFePO4 | |
| dc.subject.en | Lithium-ion batteries | |
| dc.subject.en | Mechano-chemical synthesis | |
| dc.subject.en | Olivine | |
| dc.subject.en | Phosphates | |
| dc.subject.en | Scanning and transmission electron microscopy | |
| dc.title.en | C-containing LiFePO4 materials - Part II: Electrochemical characterization | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.ssi.2008.09.005 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Solid State Ionics | |
| bordeaux.page | 2383-2389 | |
| bordeaux.volume | 179 | |
| bordeaux.issue | 40 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00353289 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00353289v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Solid%20State%20Ionics&rft.date=2008&rft.volume=179&rft.issue=40&rft.spage=2383-2389&rft.epage=2383-2389&rft.eissn=0167-2738&rft.issn=0167-2738&rft.au=MACCARIO,%20Magalie&CROGUENNEC,%20Laurence&WEILL,%20Fran%C3%A7ois&LE%20CRAS,%20Fr%C3%A9d%C3%A9ric&DELMAS,%20Claude&rft.genre=article |
Fichier(s) constituant ce document
| Fichiers | Taille | Format | Vue |
|---|---|---|---|
|
Il n'y a pas de fichiers associés à ce document. |
|||