Abstract
Environmentally friendly Na2O–BaO–Nb2O5–SiO2 glass ceramics (GCs) with different vanadium pentoxide (V2O5) contents were successfully synthesized using the conventional melt-quenching method and heat treatment. The microstructure and dielectric energy storage properties of the GCs could be related to the addition of V2O5. When 1 mol% of V2O5 was added, the activation energy of crystallization decreased from 282 to 221 kJ/mol, and the GCs had the highest energy efficiency of 95.96% and breakdown strength of 1326 kV/cm. Moreover, the GCs could also achieve an ultrafast discharge time of 14 ns and an actual discharge energy density of 0.724 J/cm3. These results indicate that these environmentally friendly GCs can be used in energy storage devices.
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