Phase transition and energy storage properties of Bi0.5Na0.5TiO3–Bi(Mg2/3Nb1/3)O3 lead-free ceramics

Innovative Design of BNKT-xSLZT Ceramics: Maximizing the Polarization Difference for Enhanced Energy Storage

“…As x increases, the two peaks gradually merge to form a permittivity plateau, shifting toward lower temperatures. In Figure h, the location of T m decreases from 283 to 175 °C and T s decreases from 116 to 84 °C, contributing to enhanced ER behavior, improved temperature stability, and the potential for enhancing the ESP of ceramics. , …”

“…Figure2h, the location of T m from 283 to 175 °C and T s decreases from 116 to 84 °C, contributing to enhanced ER behavior, improved temperature stability, and the potential for enhancing the ESP of ceramics.43,54 Figure3a−3d showcases scanning electron microscopy (SEM) images and grain size distributions of BNKT-xSLZT ceramics postchemical etching, revealing densely packed grains with minimal porosity, an indicative trait of their compact structure. The average grain size (AGS) demonstrates a gradual decrease as x increases, as depicted in Figure3e.…”

Enhanced electrical properties of BNKT–BMN lead-free ceramics by CaSnO3 doping and their bioactive properties

“…For example, the BNKT solid solution can be modied by modier substances such as Sr(Hf 0.5 Zr 0.5 )O 3 (improved the electrostrain), 7 Bi(Mg 0.5 Ti 0.5 )O 3 (enhanced normalized strain), 8 Bi(Zn 0.5 Ti 0.5 )O 3 (bettered both electro-strain and normalized strain), 9 Ba(Zr 0.04 Ti 0.96 )O 3 (enhanced piezoelectric properties), 10 BiAlO 3 (improved electro-strain), 11 (Bi 0.5 La 0.5 )AlO 3 (enhanced the electro-strain), 12 BiFeO 3 (bettered piezoelectric properties), 13,14 Ag 2 O (improved dielectric and piezoelectric properties), 15 SrTiO 3 (improved the electro-strain), 16 K 0.5 Na 0.5 NbO 3 (bettered electro-strain and normalized strain), 17 and Bi(Mg 2/ 3 Nb 1/3 )O 3 (BMN) (exhibited good piezoelectric and electromechanical properties). 3 However, it should be noted that BMN can be used as a modier for several Bi-based piezoelectric ceramic systems such as BNKT-BMT (improved electro-strain), 18 BT-BMN (exhibited good dielectric/temperature/frequency dependent stability and good energy storage density), 19 BNT-BMN (presented good energy storage properties), 20 Bi 1.05 FeO 3 -BT-BMN (showed large strain with low hysteresis strain), 21 and Ba 0.55 Sr 0.45 TiO 3 -BMN (improved breakdown strength and energy storage behavior). 22 Lately, CaSnO 3 (CSO) has attracted a growing interest because of its various applications in objects, such as gas sensors, 23 capacitor components, 24 anode materials for lithiumion batteries, 25 and catalysts.…”

The Influence of BaTiO3 Content on the Energy Storage Properties of Bi0.5Na0.5TiO3-Bi(Mg2/3Nb1/3)O3 Lead-Free Ceramics

“…Evidently, in order to enhance the energy storage properties, the key issue to be solved is to reduce P r and E c , which guides researchers to design BNT-based energy storage materials with the characteristic of slim polarization hysteresis loops. Correspondingly, a series of BNT-based solid solutions have been designed by forming relaxor ferroelectrics (RFE) [21][22][23][24][25][26][27][28][29][30]. Chandrasekhar et al reported the energy storage performance of BNT-BaTiO 3 (BNT-BT) binary system ceramics [21].…”

“…Obviously, these studies selected BNT-BT as the matrix and included additional elements/compositions to increase the energy storage properties, but they paid little attention to the influence of BT content on the energy storage properties. Furthermore, the introduction of Bi(Mg 2/3 Nb 1/3 )O 3 in BNT ceramics would induce the phase transition and optimize the energy storage density of the system [26].…”