Thermally and electrochemically driven topotactical transformations in sodium layered oxides NaxVO2
| 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 | Advanced Photon Source | |
| dc.contributor.author | SUCHOMEL, Matthew | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CARLIER, Dany | |
| 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 | 2016 | |
| dc.identifier.issn | 0897-4756 | |
| dc.description.abstractEn | Phase diagrams and structural transformations in the complex NaxVO2 system have been studied using electrochemical (de)intercalation and in situ and operando high resolution synchrotron powder diffraction. Starting from O′3-Na1/2VO2 obtained by sodium electrochemical deintercalation of O3-NaVO2, the structural details of irreversible and reversible thermally driven transformations to P′3 and P3 type structures are presented. Subsequently, these P′3-NaxVO2 phases provide a platform for operando studies exploring the NaxVO2 phase diagram as a function of sodium electrochemical (de)intercalation. In this system, three single phase domains have been found: a line phase P′3-Na1/2VO2, one solid solution for 0.53 ≤ x ≤ 0.55 characterized by an incommensurate modulated structure, and a second solid solution for 0.63 ≤ x ≤ 0.65 with a defective structure resulting from a random stack of O′3 and P′3 layers. With further sodium intercalation (x > 0.65), the structure irreversibly transforms to the starting parent phase O3-NaVO2. This work reveals new details about the diverse structural polymorphs found in sodium layered oxides used as electrode battery materials and the transitional pathways between them as a function of temperature and composition. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.title.en | Thermally and electrochemically driven topotactical transformations in sodium layered oxides NaxVO2 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/acs.chemmater.5b04882 | |
| dc.subject.hal | Chimie/Matériaux | |
| dc.subject.hal | Chimie/Chimie inorganique | |
| bordeaux.journal | Chemistry of Materials | |
| bordeaux.page | 1462-1471 | |
| bordeaux.volume | 28 | |
| bordeaux.issue | 5 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01288011 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01288011v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemistry%20of%20Materials&rft.date=2016&rft.volume=28&rft.issue=5&rft.spage=1462-1471&rft.epage=1462-1471&rft.eissn=0897-4756&rft.issn=0897-4756&rft.au=DIDIER,%20Christophe&GUIGNARD,%20Marie&SUCHOMEL,%20Matthew&CARLIER,%20Dany&DARRIET,%20Jacques&rft.genre=article |
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