Improved energy storage properties of Bi(Mg2/3Nb1/3)O3-modified 0.8Bi0.5Na0.5TiO3–0.2SrTiO3 ceramics

The pursuit of lead-free ceramic capacitors with superior energy storage properties has garnered increasing attention. The energy storage properties of Bi 0.5 Na 0.5 TiO 3 (BNT) can be feasibly adjusted by forming solid solutions with other components. Herein, 0.8Bi 0.5 Na 0.5 TiO 3 –0.2SrTiO 3 – x...

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Veröffentlicht in:	Journal of materials science. Materials in electronics 2024-08, Vol.35 (23), p.1595
Hauptverfasser:	Deng, Lingyun, Qiang, Hua, Xu, Zunping
Format:	Artikel
Sprache:	eng
Schlagworte:	Bismuth titanate Ceramics Characterization and Evaluation of Materials Chemistry and Materials Science Dielectric properties Dielectric relaxation Efficiency Electric fields Electric properties Energy storage Frequency stability Grain size Hysteresis loops Lead free Materials Science Optical and Electronic Materials Scanning electron microscopy Solid solutions
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Zusammenfassung:	The pursuit of lead-free ceramic capacitors with superior energy storage properties has garnered increasing attention. The energy storage properties of Bi 0.5 Na 0.5 TiO 3 (BNT) can be feasibly adjusted by forming solid solutions with other components. Herein, 0.8Bi 0.5 Na 0.5 TiO 3 –0.2SrTiO 3 – x Bi(Mg 2/3 Nb 1/3 )O 3 (BNT–ST– x BMN) ceramics were synthesized via citrate combustion technology. The results show that BMN-doped BNT–ST ceramics induce dielectric relaxation behavior and slim hysteresis loops are realized. An optimized recoverable energy storage density ( W re of 2.85 J/cm 3 ) and efficiency ( η of 83%) are obtained in 1.5 mol% BMN-doped BNT–ST ceramic under relatively low electric field of 200 kV/cm. The ceramics show excellent frequency stability ( W re varies
ISSN:	0957-4522 1573-482X
DOI:	10.1007/s10854-024-13358-x