Structural studies of NASICON material of different compositions by sol–gel method

The NASICON (Na 1 + x Zr 2Si x P 3 − x O 12) is a well known solid electrolyte material with high ionic conductivity. The ion conductivity can be improved by modifying the structure. The NASICON powders with different compositions (by varying x) have been prepared by sol–gel method. The structural a...

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Bibliographic Details
Published inCeramics international Vol. 38; no. 2; pp. 1731 - 1735
Main Authors Yadav, Parul, Bhatnagar, M.C.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.03.2012
Subjects
C. Ionic conductivity
Ceramics
Electrochemical cells
Impedance
Ionic conductivity
NASICON
Orientation
Planes
Selectivity
Sol gel process
Sol–gel
Sol–gel
C. Ionic conductivity
NASICON
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Summary:The NASICON (Na 1 + x Zr 2Si x P 3 − x O 12) is a well known solid electrolyte material with high ionic conductivity. The ion conductivity can be improved by modifying the structure. The NASICON powders with different compositions (by varying x) have been prepared by sol–gel method. The structural and conductivity measurements have been done by XRD, complex plane impedance analysis and electrochemical cell method. The results indicate that the ac conductivity and Na + ion selectivity are higher for x = 2.05 as compared to other compositions. The enhancement of Na + ion conductivity for x = 2.05 has been attributed to modifications in the orientations of tetrahedral structures which lead to change in the bottleneck size. The results have been confirmed by X-ray diffraction (XRD).
Bibliography:ObjectType-Article-1
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content type line 23
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2011.09.022