Topotactic insertion of lithium in the layered structure Li{sub 4}VO(PO{sub 4}){sub 2}: The tunnel structure Li{sub 5}VO(PO{sub 4}){sub 2}
- Laboratoire de Cristallographie et Sciences des Materiaux, ENSICAEN, Universite de Caen, CNRS, 6 Bd Marechal Juin, F-14050 Caen 4 (France)
- Materials Science Research Centre, Indian Institute of Technology Madras, Chennai 6000036 (India)
A new V(III) lithium phosphate Li{sub 5}VO(PO{sub 4}){sub 2} has been synthesized by electrochemical insertion of lithium into Li{sub 4}VO(PO{sub 4}){sub 2}. This phase, which crystallizes in the space group I4/mcm, exhibits a tunnel structure closely related to the layered structure of Li{sub 4}VO(PO{sub 4}){sub 2} and to the tunnel structure of VO(H{sub 2}PO{sub 4}){sub 2}. The topotactic reactions that take place during lithium exchange and intercalation, starting from VO(H{sub 2}PO{sub 4}){sub 2} and going to the final phase Li{sub 5}VO(PO{sub 4}){sub 2} are explained on the basis of the flexible coordinations of V{sup 4+} and V{sup 3+} species. The electrochemical and magnetic properties of this new phase are also presented and explained on the basis of the structure dimensionality. - Graphical abstract: Electrochemical synthesis of a new 3D V(III) lithium phosphate, Li{sub 5}VO(PO{sub 4}){sub 2}. Starting from the 2D Li{sub 4}VO(PO{sub 4}){sub 2}, the topotactic reaction that take place during lithium intercalation is explained on the basis of the flexible coordinations of V{sup 4+} and V{sup 3+} species.
- OSTI ID:
- 21128272
- Journal Information:
- Journal of Solid State Chemistry, Vol. 181, Issue 4; Other Information: DOI: 10.1016/j.jssc.2008.01.044; PII: S0022-4596(08)00056-X; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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