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<p>Ceramic-based capacitors for energy storage devices require simultaneously high energy density and efficiency. In order to meet the production requirements of high performance lead-free dielectric capacitor, we design (1−<i>x</i>)CaTiO<sub>3</sub>–BiMgSb((1−<i>x</i>)CT-BMS) (<i>x</i> = 0.05, 0.10, 0.15, and 0.20) ceramics in this study. According to research, 0.90CT-0.10BMS ceramic exhibit excellent total energy density (<i>W</i><sub>total</sub> = 2.56&#xa0;J/cm<sup>3</sup>), great recyclable energy storage density (<i>W</i><sub>rec</sub> = 2.28&#xa0;J/cm<sup>3</sup>) and high efficiency (<i>η</i> = 89%) under the breakdown strength (<i>E</i><sub>b</sub>) of 536&#xa0;kV/cm. What is more, 0.90CT-0.10BMS ceramic achieved excellent current density (<i>C</i><sub>D</sub> = 598.4 A/cm<sup>2</sup>), power density <i>(P</i><sub>D</sub> = 53.56&#xa0;MW/cm<sup>3</sup>). In addition, 0.90CT-0.10BMS ceramic has excellent temperature range (20–160&#xa0;°C) and frequency (1–100&#xa0;Hz) stability. 0.90CT-0.10BMS ceramic highly perspective in high-power electronic devices due to the excellent energy storage properties.</p>

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Enhanced energy-storage density and efficiency of lead-free CaTiO3–Bi(Mg1/2Sb2/3)O3 linear dielectric ceramics

  • 期刊论文

  • 发表日期：

    2025年4月3日

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  • Chenggeng Yao,
  • Baolin Zhang

摘要

Ceramic-based capacitors for energy storage devices require simultaneously high energy density and efficiency. In order to meet the production requirements of high performance lead-free dielectric capacitor, we design (1−x)CaTiO3–BiMgSb((1−x)CT-BMS) (x = 0.05, 0.10, 0.15, and 0.20) ceramics in this study. According to research, 0.90CT-0.10BMS ceramic exhibit excellent total energy density (Wtotal = 2.56 J/cm3), great recyclable energy storage density (Wrec = 2.28 J/cm3) and high efficiency (η = 89%) under the breakdown strength (Eb) of 536 kV/cm. What is more, 0.90CT-0.10BMS ceramic achieved excellent current density (CD = 598.4 A/cm2), power density (PD = 53.56 MW/cm3). In addition, 0.90CT-0.10BMS ceramic has excellent temperature range (20–160 °C) and frequency (1–100 Hz) stability. 0.90CT-0.10BMS ceramic highly perspective in high-power electronic devices due to the excellent energy storage properties.