Crystal chemistry and ion conductivity of the Na(1+x)Ti(2-x)Al(x)(PO4)3 (0 ≤ x ≤ 0.9) NASICON series

F. E. Mouahid; M. Bettach; M. Zahir; P. Maldonado-Manso; S. Bruque; E. R. Losilla; M. A.G. Aranda

doi:10.1039/b004837m

Crystal chemistry and ion conductivity of the Na(1+x)Ti(2-x)Al(x)(PO₄)₃ (0 ≤ x ≤ 0.9) NASICON series

F. E. Mouahid, M. Bettach, M. Zahir, P. Maldonado-Manso, S. Bruque^*, E. R. Losilla, M. A.G. Aranda

^*Corresponding author for this work

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

57 Scopus citations

Abstract

The Na(1+x)Ti(2-x)Al(x)(PO₄)₃ (0.0 ≤ x ≤ 0.9) solid solution has been prepared as a polycrystalline powder. These compounds crystallise in the NASICON type structure, R3̄c space group, and the crystal structures have been characterised by the Rietveld method with laboratory powder diffraction data. The Ti/Al atoms are randomly distributed over the octahedral site of the NASICON framework. The negatively charged framework is neutralised by the Na⁺ cations which are distributed over the M1 site, fully occupied, and M2 site, partly occupied. The cell parameter evolution along the series agrees with the substitution of larger Ti⁴⁺ by smaller Al³⁺ cations. The thermal expansion coefficients were determined from a thermodiffractometric study of Na_1.8Ti_1.2Al_0.8(PO₄)₃. The ion conductivity of the samples rises as the charge carrier number (x) increases. The activation energies deduced from the Arrhenius plots are close to 0.50 eV. The overall conductivities are near to 10^-5 S cm^-1 at 200 °C.

Original language	English
Pages (from-to)	2748-2753
Number of pages	6
Journal	Journal of Materials Chemistry
Volume	10
Issue number	12
DOIs	https://doi.org/10.1039/b004837m
State	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Materials Chemistry

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10.1039/b004837m

Cite this

@article{326492378ffc45dc96e5dc089d9beb44,

title = "Crystal chemistry and ion conductivity of the Na(1+x)Ti(2-x)Al(x)(PO4)3 (0 ≤ x ≤ 0.9) NASICON series",

abstract = "The Na(1+x)Ti(2-x)Al(x)(PO4)3 (0.0 ≤ x ≤ 0.9) solid solution has been prepared as a polycrystalline powder. These compounds crystallise in the NASICON type structure, R{\=3}c space group, and the crystal structures have been characterised by the Rietveld method with laboratory powder diffraction data. The Ti/Al atoms are randomly distributed over the octahedral site of the NASICON framework. The negatively charged framework is neutralised by the Na+ cations which are distributed over the M1 site, fully occupied, and M2 site, partly occupied. The cell parameter evolution along the series agrees with the substitution of larger Ti4+ by smaller Al3+ cations. The thermal expansion coefficients were determined from a thermodiffractometric study of Na1.8Ti1.2Al0.8(PO4)3. The ion conductivity of the samples rises as the charge carrier number (x) increases. The activation energies deduced from the Arrhenius plots are close to 0.50 eV. The overall conductivities are near to 10-5 S cm-1 at 200 °C.",

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

year = "2000",

doi = "10.1039/b004837m",

language = "English",

volume = "10",

pages = "2748--2753",

journal = "Journal of Materials Chemistry",

issn = "0959-9428",

number = "12",

}

TY - JOUR

T1 - Crystal chemistry and ion conductivity of the Na(1+x)Ti(2-x)Al(x)(PO4)3 (0 ≤ x ≤ 0.9) NASICON series

AU - Mouahid, F. E.

AU - Bettach, M.

AU - Zahir, M.

AU - Maldonado-Manso, P.

AU - Bruque, S.

AU - Losilla, E. R.

AU - Aranda, M. A.G.

PY - 2000

Y1 - 2000

N2 - The Na(1+x)Ti(2-x)Al(x)(PO4)3 (0.0 ≤ x ≤ 0.9) solid solution has been prepared as a polycrystalline powder. These compounds crystallise in the NASICON type structure, R3̄c space group, and the crystal structures have been characterised by the Rietveld method with laboratory powder diffraction data. The Ti/Al atoms are randomly distributed over the octahedral site of the NASICON framework. The negatively charged framework is neutralised by the Na+ cations which are distributed over the M1 site, fully occupied, and M2 site, partly occupied. The cell parameter evolution along the series agrees with the substitution of larger Ti4+ by smaller Al3+ cations. The thermal expansion coefficients were determined from a thermodiffractometric study of Na1.8Ti1.2Al0.8(PO4)3. The ion conductivity of the samples rises as the charge carrier number (x) increases. The activation energies deduced from the Arrhenius plots are close to 0.50 eV. The overall conductivities are near to 10-5 S cm-1 at 200 °C.

AB - The Na(1+x)Ti(2-x)Al(x)(PO4)3 (0.0 ≤ x ≤ 0.9) solid solution has been prepared as a polycrystalline powder. These compounds crystallise in the NASICON type structure, R3̄c space group, and the crystal structures have been characterised by the Rietveld method with laboratory powder diffraction data. The Ti/Al atoms are randomly distributed over the octahedral site of the NASICON framework. The negatively charged framework is neutralised by the Na+ cations which are distributed over the M1 site, fully occupied, and M2 site, partly occupied. The cell parameter evolution along the series agrees with the substitution of larger Ti4+ by smaller Al3+ cations. The thermal expansion coefficients were determined from a thermodiffractometric study of Na1.8Ti1.2Al0.8(PO4)3. The ion conductivity of the samples rises as the charge carrier number (x) increases. The activation energies deduced from the Arrhenius plots are close to 0.50 eV. The overall conductivities are near to 10-5 S cm-1 at 200 °C.

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U2 - 10.1039/b004837m

DO - 10.1039/b004837m

M3 - Article

AN - SCOPUS:0034532359

SN - 0959-9428

VL - 10

SP - 2748

EP - 2753

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

IS - 12