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Electrochemical performances in temperature for a C-containing LiFePO4 composite synthesized at high temperature
| 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, F. | |
| 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 | 0378-7753 | |
| dc.description.abstractEn | C-LiFePO4 composite was synthesized by mechano-chemical activation using iron and lithium phosphates and also cellulose as carbon precursor; this mixture was heated at 800 °C under argon during a short time. Long-range cyclings at different temperatures (RT, 40 and 60 °C) and at C/20 rate between 2 and 4.5 V vs. Li+/Li were carried out with this C-LiFePO4 material as positive electrode material in lithium cells. Whatever the cycling conditions used, rather good electrochemical performances were obtained, with a capacity close to the theoretical one and a good cycle life, especially at RT – up to 100 cycles – and at 40 °C with not, vert, similar80% of the initial capacity maintained after 100 cycles. The electrodes recovered after long-range cyclings were characterized by X-ray diffraction; whatever the cycling temperature no significant structural changes (cell parameters, bond lengths, etc.) were shown to occur. Nevertheless, iron was found to be present at the negative electrode – as already observed by Amine et al. – after long-range cycling at 60 °C: other analyses have to be done to identify the origin of this iron (from an impurity or from LiFePO4 itself) and to quantify this amount vs. that of active C-LiFePO4 material using larger cells. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Lithium-ion batteries | |
| dc.subject.en | LiFePO4 | |
| dc.subject.en | Electrochemical properties | |
| dc.subject.en | Cycling in temperature | |
| dc.subject.en | Structural stability | |
| dc.subject.en | X-ray diffraction | |
| dc.title.en | Electrochemical performances in temperature for a C-containing LiFePO4 composite synthesized at high temperature | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.jpowsour.2008.05.045 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Power Sources | |
| bordeaux.page | 411-417 | |
| bordeaux.volume | 183 | |
| bordeaux.issue | 1 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00324671 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00324671v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Power%20Sources&rft.date=2008&rft.volume=183&rft.issue=1&rft.spage=411-417&rft.epage=411-417&rft.eissn=0378-7753&rft.issn=0378-7753&rft.au=MACCARIO,%20Magalie&CROGUENNEC,%20Laurence&LE%20CRAS,%20F.&DELMAS,%20Claude&rft.genre=article |
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