Optimization of Electrical Properties of Nanocrystallized Na3M2(PO4)2F3 NASICON-like Glasses (M = V, Ti, Fe)

Recently, an interest in NASICON-type materials revived, as they are considered potential cathode sodium–ion batteries used large-scale energy storage. We applied a facile technique of thermal nanocrystallization glassy analogs these compounds to enhance their electrical parameters. Six nanomaterials the Na3M2(PO4)2F3 (M = V, Ti, Fe) system were studied. Samples with nominal compositions Na3V2(PO4)2F3, Na3Ti2(PO4)2F3, Na3Fe2(PO4)2F3, Na3TiV(PO4)2F3, Na3FeV(PO4)2F3 and Na3FeTi(PO4)2F3 have been synthesized glasses using melt-quenching method. X-ray diffraction measurements conducted for as-synthesized samples after heating at elevated temperatures investigate structure. Extensive impedance allowed us optimize process conductivity nanomaterials. Such procedure resulted room temperature ranging from 1×10−9 up 8×10−5 S/cm. carried out situ spectroscopy (in ultra-high-frequency range 10 GHz) compared them events observed differential analysis studies.