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<p>In this work, (1-<i>x</i>)(0.9Ba<sub>0.97</sub>Ca<sub>0.03</sub>TiO<sub>2.97</sub>-0.1Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>)-xBiMg<sub>2/3</sub>Ta<sub>1/3</sub>O<sub>3</sub> (abbreviated as (1-<i>x</i>)BCBNT-xBMT, <i>x</i>&#xa0;=&#xa0;0.03–0.15) ceramics were fabricated, and the phase structure, microstructure, and ESPs of the ceramics after introducing BMT were systematically studied. The addition of BMT causes a tetragonal–cubic transition in the phase structure, and restrains grain growth. The reducing of grain size and the weakening of tetragonal properties lead to the enhancement of relaxation performance and the generation of slender ferroelectric hysteresis loops. The sample doped with 0.09BMT achieved high values of 3.81&#xa0;J/cm<sup>3</sup> and 84.26% in recoverable energy storage density and the energy storage efficiency at 210&#xa0;kV/cm, respectively. The ceramic with <i>x</i>&#xa0;=&#xa0;0.09 exhibits <i>C</i><sub>D</sub> (164.3&#xa0;A/cm<sup>2</sup>) and <i>P</i><sub>D</sub> (9.859&#xa0;MW/cm<sup>3</sup>) at 120&#xa0;kV/cm, as well as ultra-low <i>t</i><sub>0.9</sub> (~&#xa0;52&#xa0;ns) and high <i>W</i><sub>dis</sub> (0.3&#xa0;J/cm<sup>3</sup>). These superior properties make the 0.91BCBNT-0.09BMT a competitive energy storage dielectric ceramic material.</p>

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Energy Storage Performance of BaTi0.97Ca0.03O2.97-Based Ceramics Reinforced with BiMg2/3Ta1/3O3 -Doped Relaxor End-Member

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • Zhongmou Ma,
  • Zhiwei Li,
  • Zhihui Chen

摘要

In this work, (1-x)(0.9Ba0.97Ca0.03TiO2.97-0.1Bi0.5Na0.5TiO3)-xBiMg2/3Ta1/3O3 (abbreviated as (1-x)BCBNT-xBMT, x = 0.03–0.15) ceramics were fabricated, and the phase structure, microstructure, and ESPs of the ceramics after introducing BMT were systematically studied. The addition of BMT causes a tetragonal–cubic transition in the phase structure, and restrains grain growth. The reducing of grain size and the weakening of tetragonal properties lead to the enhancement of relaxation performance and the generation of slender ferroelectric hysteresis loops. The sample doped with 0.09BMT achieved high values of 3.81 J/cm3 and 84.26% in recoverable energy storage density and the energy storage efficiency at 210 kV/cm, respectively. The ceramic with x = 0.09 exhibits CD (164.3 A/cm2) and PD (9.859 MW/cm3) at 120 kV/cm, as well as ultra-low t0.9 (~ 52 ns) and high Wdis (0.3 J/cm3). These superior properties make the 0.91BCBNT-0.09BMT a competitive energy storage dielectric ceramic material.