Sebastian, Litty ; Piffard, Y. ; Shukla, A. K. ; Taulelle, F. ; Gopalakrishnan, J. (2003) Synthesis, structure and lithium-ion conductivity of Li2-2x Mg2+x (MoO4)3 and Li3 M(MoO4)3(MIII= Cr, Fe) Journal of Materials Chemistry, 13 (7). pp. 1797-1802. ISSN 0959-9428
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Official URL: http://www.rsc.org/Publishing/Journals/JM/article....
Related URL: http://dx.doi.org/10.1039/b301189e
Abstract
Lithium magnesium molybdates of the general formula Li2-2xMg2+x(MoO4)3, for 0 ≤ x ≤ 0.3, have been synthesized and their structure and lithium ion conductivity investigated. Determination of crystal structure of one of the members, Li2Mg2(MoO4)3, has revealed a three-dimensional framework consisting of metal-oxygen octahedra and trigonal prisms (where Li and Mg reside) which are interconnected by MoO4 tetrahedra. Although the framework is three-dimensional, lithium-ion conductivity appears to be restricted to the onedimensional channels formed by interconnected trigonal prisms. Isotypic molybdates, Li3M(MoO4)3 (M = Cr, Fe), where lithium ions occupy exclusively the trigonal prismatic channels, exhibit a higher lithium ion conductivity than Li2-2xMg2+x(MoO4)3, lending support to the idea that the conductivity is one-dimensional in these materials. 7Li NMR spectral data are consistent with this interpretation.
Item Type: | Article |
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Source: | Copyright of this article belongs to Royal Society of Chemistry. |
ID Code: | 12928 |
Deposited On: | 11 Nov 2010 08:24 |
Last Modified: | 16 May 2016 22:10 |
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