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; J. Santamaria

doi:10.1039/b102918p

Na-Li exchange of Na_1+xTi_2-xAl_x(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
, J. Santamaria

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

Ion exchange reactions have been tested in sodium-containing NASICON materials in order to prepare Li_1+xAl_xTi_2-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.

Original language	English
Pages (from-to)	3258-3263
Number of pages	6
Journal	Journal of Materials Chemistry
Volume	11
Issue number	12
DOIs	https://doi.org/10.1039/b102918p
State	Published - 2001
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Materials Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1039/b102918p

Cite this

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title = "Na-Li exchange of Na1+xTi2-xAlx(PO4)3 (0.6 ≤ X ≤ 0.9) NASICON series: A Rietveld and impedance study",

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.",

author = "Mouahid, \{F. E.\} and M. Zahir and P. Maldonado-Manso and S. Bruque and Losilla, \{E. R.\} and Aranda, \{M. A.G.\} and A. Rivera and C. Leon and J. Santamaria",

year = "2001",

doi = "10.1039/b102918p",

language = "English",

volume = "11",

pages = "3258--3263",

journal = "Journal of Materials Chemistry",

issn = "0959-9428",

number = "12",

}

TY - JOUR

T1 - Na-Li exchange of Na1+xTi2-xAlx(PO4)3 (0.6 ≤ X ≤ 0.9) NASICON series

T2 - A Rietveld and impedance study

AU - Mouahid, F. E.

AU - Zahir, M.

AU - Maldonado-Manso, P.

AU - Bruque, S.

AU - Losilla, E. R.

AU - Aranda, M. A.G.

AU - Rivera, A.

AU - Leon, C.

AU - Santamaria, J.

PY - 2001

Y1 - 2001

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/0035655318

U2 - 10.1039/b102918p

DO - 10.1039/b102918p

M3 - Article

AN - SCOPUS:0035655318

SN - 0959-9428

VL - 11

SP - 3258

EP - 3263

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

IS - 12

ER -