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<p>(1–<i>x</i>)(0.76Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>–0.24SrTiO<sub>3</sub>)-<i>x</i>(Ag<sub>0.5</sub>Ba<sub>0.5</sub>)(Zr<sub>0.5</sub>Nb<sub>0.5</sub>)O<sub>3</sub> (BNST–100<i>x</i>ABZN, <i>x</i> = 0.00–0.12) were prepared using a conventional solid-state synthesis technique, and the ABZN was introduced to enhance the energy storage, fast charge/discharge and thermal stability of BNST-based ceramics. The impact of doping on permittivity properties, microstructure, energy storage and thermal stability were systematically investigated. It was found that a moderate amount of ABZN doping did not significantly change the phase structure but resulted in refined grain size. Additionally, it improved the material's insulation, reduced the permittivity, and broadened the temperature stability range of permittivity, thus improving the breakdown strength of the samples. Meanwhile, due to the increase in polar nanoregions, a slender <i>P-E</i> curve was obtained. Consequently, the BNST-9ABZN ceramic's energy storage capabilities were significantly improved, achieving recoverable energy storage of 4.6&#xa0;J/cm<sup>3</sup> and efficiency of 82% at 250&#xa0;kV/cm, along with excellent stability in frequency (1–100&#xa0;Hz) and temperature (20–120&#xa0;°C). More importantly, the sample achieves a substantial power density of 54.3&#xa0;MW/cm<sup>3</sup> under 160&#xa0;kV/cm, along with a discharge time (<i>t</i><sub>0.9</sub>) of 0.21&#xa0;μs. The results suggest that this BNST-9ABZN ceramic holds substantial promise for use in high-temperature pulse power devices.</p>

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Enhanced energy storage and fast charge–discharge properties of (Ag0.5Ba0.5)(Zr0.5Nb0.5)O3 modified (Bi0.5Na0.5)0.76Sr0.24TiO3-based ceramics

  • 期刊论文

  • 发表日期：

    2025年1月7日

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  • Nianshun Zhao,
  • Lifeng Jiang,
  • Xiaofan Zheng,
  • Qin Gao,
  • Li Wang,
  • Juan Hu,
  • Sha Lu,
  • Xuzheng Qian,
  • Taiming Sun

摘要

(1–x)(0.76Bi0.5Na0.5TiO3–0.24SrTiO3)-x(Ag0.5Ba0.5)(Zr0.5Nb0.5)O3 (BNST–100xABZN, x = 0.00–0.12) were prepared using a conventional solid-state synthesis technique, and the ABZN was introduced to enhance the energy storage, fast charge/discharge and thermal stability of BNST-based ceramics. The impact of doping on permittivity properties, microstructure, energy storage and thermal stability were systematically investigated. It was found that a moderate amount of ABZN doping did not significantly change the phase structure but resulted in refined grain size. Additionally, it improved the material's insulation, reduced the permittivity, and broadened the temperature stability range of permittivity, thus improving the breakdown strength of the samples. Meanwhile, due to the increase in polar nanoregions, a slender P-E curve was obtained. Consequently, the BNST-9ABZN ceramic's energy storage capabilities were significantly improved, achieving recoverable energy storage of 4.6 J/cm3 and efficiency of 82% at 250 kV/cm, along with excellent stability in frequency (1–100 Hz) and temperature (20–120 °C). More importantly, the sample achieves a substantial power density of 54.3 MW/cm3 under 160 kV/cm, along with a discharge time (t0.9) of 0.21 μs. The results suggest that this BNST-9ABZN ceramic holds substantial promise for use in high-temperature pulse power devices.