Ac complex impedance, dc resistivity, 7Li and 23Na NMR studies of the layered Li(Na)xMo2O4 system

S. Colson, S. P. Szu, L. C. Klein, J. M. Tarason

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Abstract

Layered lithium molybdates of formula LixMo2O4 have been shown earlier to be promising cathode materials for secondary batteries. Nevertheless, a better understanding of the evolution of their transport properties as a function of Li composition and water intercalation is still required. This paper reviews the recent progress towards this understanding. ac and dc measurements have been used to describe the transport properties of the following compositions: Li1.3Mo2O4, Li2Mo2O4, Li0.5(H2O) 1.3Mo2O4. A combined analysis of the Arrhenius plots of conductivity and NMR spectra for the above samples suggests only one type of atomic site, between the MoO2 layers, for the Li ions, in agreement with the results obtained by X-ray crystallographic studies. A similar study of the corresponding sodium phases: Na0.5mo2O4, Na0.9Mo2O4, Na1.3Mo2O4 and Na0.4(H2O)1.2 Mo2O4, is also presented.

Original languageEnglish (US)
Pages (from-to)283-289
Number of pages7
JournalSolid State Ionics
Volume46
Issue number3-4
DOIs
StatePublished - Jul 1991

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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