O'3-Na(x)VO(2) System: A Superstructure for Na(1/2)VO(2).
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DIDIER, Christophe | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GUIGNARD, Marie | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DARRIET, Jacques | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DELMAS, Claude | |
| dc.date.issued | 2012-10-15 | |
| dc.identifier.issn | 0020-1669 | |
| dc.description.abstractEn | The electrochemical cycling in a sodium battery of the lamellar oxide NaVO(2) is reversible in the Na(x)VO(2) composition range 1/2 ≤ x ≤ 1. The complex electrochemical curve reveals the presence of several transitions taking place during deintercalation. With the help of in situ X-ray diffraction, we observed the structural transitions taking place between Na(2/3)VO(2) and Na(1/2)VO(2). The diffractograms show the presence of several monophasic domains separated by biphasic domains. All phases present a monoclinic distortion of the α-NaFeO(2) structure in the composition range 1/2 ≤ x ≤ 2/3. Moreover the presence of a superstructure is evidenced for Na(1/2)VO(2). It is the first time that an ordered structure is reported at the Na(1/2)MO(2) composition with an O'3 oxygen stacking. A thorough investigation of electrochemically obtained O'3-Na(1/2)VO(2) was performed. The structure refinement reveals the existence of a sodium/vacancy ordering, with a peculiar arrangement of the V-V distances hinting at a pairing of vanadium atoms. Our first measurements of the physical properties of O'3-Na(1/2)VO(2) show a semiconductor behavior and a complex thermal dependence of the magnetic susceptibility related to the pairing of the vanadium atoms. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.subject.en | Electrochemistry | |
| dc.subject.en | Batteries | |
| dc.subject.en | Inorganic compounds | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/ic301505e | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Inorganic Chemistry | |
| bordeaux.page | 11007-11016 | |
| bordeaux.volume | 51 | |
| bordeaux.issue | 20 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00745833 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| dc.title.pt | O'3-Na(x)VO(2) System: A Superstructure for Na(1/2)VO(2). | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00745833v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inorganic%20Chemistry&rft.date=2012-10-15&rft.volume=51&rft.issue=20&rft.spage=11007-11016&rft.epage=11007-11016&rft.eissn=0020-1669&rft.issn=0020-1669&rft.au=DIDIER,%20Christophe&GUIGNARD,%20Marie&DARRIET,%20Jacques&DELMAS,%20Claude&rft.genre=article |
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