NMR studies of modified nasicon-like, lithium conducting solid electrolytes*1

Forsyth, M., Wong, S., Nairn, K. M., Best, A. S., Newman, P. J. and MacFarlane, D. R. 1999, NMR studies of modified nasicon-like, lithium conducting solid electrolytes*1, Solid state ionics, vol. 124, no. 3-4, pp. 213-219.

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Title NMR studies of modified nasicon-like, lithium conducting solid electrolytes*1
Formatted title NMR studies of modified nasicon-like, lithium conducting solid electrolytes*1
Author(s) Forsyth, M.
Wong, S.
Nairn, K. M.
Best, A. S.
Newman, P. J.
MacFarlane, D. R.
Journal name Solid state ionics
Volume number 124
Issue number 3-4
Start page 213
End page 219
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 1999-09-02
ISSN 0167-2738
1872-7689
Keyword(s) lithium conductor
NASICON
solid electrolyte
solid state NMR
ionic conductivity
Summary 27Al, 31P and 7Li NMR measurements have been performed on lithium conducting ceramics based on the LiTi2(PO4)3 structure with Al, V and Nb metal ions substituted for either Ti or P within the framework NASICON structure. The 27Al magic angle spinning NMR measurements have revealed that, although Al is intended to substitute for octahedral Ti sites, additional substitution into tetrahedral environments (presumably phosphorous sites) occurs with increasing amount of Al addition. This tetrahedral substitution appears to occur more readily in the presence of vanadium, in Li1+xAlxTi2−x(PO4)2.9(VO4)0.1, whereas similar niobium additions (in place of vanadium) appear to stifle tetrahedral substitution. 7Li static NMR spectra reveal quadrupolar structure with Cq approximately 42 kHz, largely independent of substitution. Measurement of the 7Li central transition linewidth at room temperature reveals a relatively mobile lithium species (300–900 Hz) with linewidth tending to decrease with Al substitution and increase with increasing V or Nb. This new structural information is discussed in the context of ionic conduction in these ceramics.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©1999, Elsevier Science B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030151

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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