Effect of (Nb2/3Mg1/3)4+ complex on the dielectric and ferroelectric properties of (Ba0.3Sr0.7)0.35(Bi0.5Na0.5)0.65TiO3 ceramics for energy storage

Autor: Fusheng Song, Zhipeng Li, Zong-Yang Shen, Xingcai Wang, Zhumei Wang, Dongxu Li, Wen-Qin Luo, Yueming Li
Rok vydání: 2020
Předmět:
Zdroj: Journal of Materials Science: Materials in Electronics. 31:3648-3653
ISSN: 1573-482X
0957-4522
DOI: 10.1007/s10854-020-02922-w
Popis: Pure perovskite (Ba0.3Sr0.7)0.35(Bi0.5Na0.5)0.65[Ti1−x(Nb2/3Mg1/3)x]O3 (BSBNT-NM100x, x = 0, 0.01, 0.02, 0.03, 0.04, 0.06) ceramics were prepared to investigate the effect of (Nb2/3Mg1/3)4+ complex on the structure, dielectric, and ferroelectric properties. Introducing (Nb2/3Mg1/3)4+ complex can suppress the dielectric peak and improve the temperature stability of dielectric constant. The Ps and Pr of the BSBNT-NM100x ceramics were gradually decreased with the increase of x value, making the P–E hysteresis loops go slim which is suitable for pulsed power energy storage applications. A maximum value of Ps–Pr = 26.64 μC/cm2 was obtained for the composition of x = 0.02, at which a maximum recoverable energy density Wrec = 0.92 J/cm3 accompanied with moderate energy efficiency η = 70% was achieved under an applied electric field of 96 kV/cm. Furthermore, the BSBNT-NM100x ceramics with x = 0.02 display excellent fatigue properties, relatively high breakdown strength, and good temperature stability of P–E hysteresis loops, demonstrating that it possesses potential application for energy storage capacitors.
Databáze: OpenAIRE
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