Issue 12, 2001
From the journal:

Journal of Materials Chemistry

F. E. Mouahid,a   M. Zahir,a   P. Maldonado-Manso,b   S. Bruque,*b   E. R. Losilla,b   M. A. G. Aranda,b   A. Rivera,c   C. Leonc  and  J. Santamariac  

* Corresponding authors

a L.P.C.M. Département de Chimie, Faculté des Sciences, Université Chouaib Doukkali, El Jadida, Morocco

b Departamento de Química Inorgánica, Cristalografía y Mineralogía, Universidad de Málaga, Málaga, Spain
E-mail: bruque@uma.es

c Departamento de Física Aplicada III, Universidad Complutense de Madrid, Madrid, Spain

Abstract

Ion exchange reactions have been tested in sodium-containing NASICON materials in order to prepare Li1 + xAlxTi2 − x(PO4)3 compounds with high lithium content, x ≥ 0.6. However, the studied lithium exchange reactions are not complete and the final solids have an appreciable sodium content. Structural characterisation by the Rietveld method reveals that sodium partially remains at the M1 site and the M2 site is fully exchanged by Li+ cations. The electrical properties have been characterised by an impedance study. The Li-exchanged NASICONs have lower dc conductivities and higher activation energies than the pure sodium analogues. This is likely due to the mixed alkali effect and because some percolation pathways are disabled.

Graphical abstract: Na–Li exchange of Na1 + xTi2 − xAlx(PO4)3 (0.6 ≤ x ≤ 0.9) NASICON series: a Rietveld and impedance study

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Article information

DOI
https://doi.org/10.1039/B102918P
Article type
Paper
Submitted
01 Mar 2001
Accepted
24 Aug 2001
First published
17 Oct 2001

J. Mater. Chem., 2001,11, 3258-3263

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Na–Li exchange of Na1 + xTi2 − xAlx(PO4)3 (0.6 ≤ x ≤ 0.9) NASICON series: a Rietveld and impedance study

F. E. Mouahid, M. Zahir, P. Maldonado-Manso, S. Bruque, E. R. Losilla, M. A. G. Aranda, A. Rivera, C. Leon and J. Santamaria, J. Mater. Chem., 2001, 11, 3258 DOI: 10.1039/B102918P

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