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Crystallization and sodium-ion conduction properties of glass-ceramic solid solutions of Na5FeSi4O12 and Na4ZrSi4O12

    https://doi.org/10.1142/S1793604721410010Cited by:3 (Source: Crossref)
    This article is part of the issue:

    This study focused on the effect of Zr-inclusion on Na+ conduction properties of the newly developed glass–ceramic solid solutions of Na5FeSi4O12 and Na4ZrSi4O12. We experimentally confirmed formation of an all proportional solid solution in the range of x= 0 and 1.0 with the composition Na5xFe1xZrxSi4O12. Glass–ceramic with a fast Na+-conducting Na5YSi4O12-type single phase was obtained in all the solid solutions. The conduction properties of the glass–ceramics were improved with increasing content of Zr, and Na4ZrSi4O12 was the most conductive glass–ceramic. The ionic conductivities were as high as 1.9 × 105 S cm1 and 9.3 × 103 S cm1 at temperatures of 25C and 300 C, respectively. The improved conductivity was attributed to the expansion of the conduction path by larger Zr ions replacing FeO6 octahedra.