New layered vanadium oxides MyH1-yV3O8 center dot nH(2)O (M = Li, Na, K) obtained by oxidation of the precursor H2V3O8

Authors
Legagneur, V La Salle, AL Verbaere, A Piffard, Y Guyomard, D
Citation
V. Legagneur et al., New layered vanadium oxides MyH1-yV3O8 center dot nH(2)O (M = Li, Na, K) obtained by oxidation of the precursor H2V3O8, J MAT CHEM, 10(12), 2000, pp. 2805-2810
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS CHEMISTRY
ISSN journal
09599428 → ACNP
Volume
10
Issue
12
Year of publication
2000
Pages
2805 - 2810
Database
ISI
SICI code
0959-9428(2000)10:12<2805:NLVOMC>2.0.ZU;2-E
Abstract
New layered vanadium oxides were prepared at room temperature via either el ectrochemical or chemical topotactic oxidation in aqueous media of the laye red, solid precursor H2V3O8. Their formula MyH1 - yV3O8. nH(2)O (M = Li, Na , K) shows the oxidation of vanadium to occur with the removal of one hydro gen atom and with a partial exchange of the remaining proton. A structural study by powder X-ray diffraction, including a Rietveld analysis, clearly i ndicated that the structure of the anionic covalent layers, V3O8, are prese rved in going from H2V3O8 to MyH1 - yV3O8. nH(2)O. In the latter compounds, all the water molecules occupy the interlayer space along with the M+ ions .