Study of NaxVO2 layered oxides : electrochemistry, structure and physical properties
type: Dataset
contact point: Organization
  fn: CCSD
keyword: desintercalation-du-sodium
keyword: oxydes-lamellaires
keyword: ordering
keyword: layered-oxides
keyword: naxvo2
keyword: theses
keyword: infoeu-reposemanticsdoctoralthesis
keyword: mise-en-ordre
keyword: chimmatechemical-sciencesmaterial-chemistry
keyword: sodium-deintercalation
landing page: https://theses.hal.science/tel-00860738
description: This thesis is about the study of the lamellar oxides NaxVO2. Several phases have been obtained with different stacking of the [VO2] sheets: O3-NaVO2, P’3-Na0.56VO2 and P2-Na0.73VO2. These three materials have been the subject of an electrochemical study in sodium batteries coupled with in situ X-ray diffraction in order to understand the structural transitions taking place as a function of the composition. A superstructure appears at Na1/2VO2 for the three stackings. This composition has been obtained by potentiostatic synthesis. The structural characterization shows that at this composition the three polytypes present a Na+/vacancy ordering and suggests the presence of clusters of vanadium ions. An unusual behaviour of the physical properties is observed as a result of this peculiar organization. This work demonstrates the important electronic correlations in this family of materials and paves the path to future studies in solid-state chemistry and physics.
identifier: NNT: 2013BOR14784
issued: 2026-05-09T19:03:24.269203
language: fr
modified: 2026-05-09T19:03:24.269208

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type: Agent

Study of NaxVO2 layered oxides : electrochemistry, structure and physical properties
type: Distribution
access URL: https://theses.hal.science/tel-00860738
format: HTML
issued: 2026-05-09T19:03:24.275852
modified: 2026-05-09T19:03:24.259060