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<p>Na<sub>0.35</sub>Bi<sub>0.35</sub>Sr<sub>0.3</sub>TiO<sub>3</sub>–0.07La modified BaSn<sub>0.07</sub>Ti<sub>0.93</sub>O<sub>3</sub> ((1−<i>x</i>)BST-<i>x</i>NBSTL, <i>x</i> = 0.3–0.6) ceramics were fabricated using citrate combustion method. (1−<i>x</i>)BST-<i>x</i>NBSTL solid solution exhibits typical relaxor characteristics. The remanent polarization is effectively decreased, the grain size is reduced, and enhanced breakdown strength is obtained after the addition of NBSTL into BST. As a result, 0.5BST-0.5NBSTL ceramics exhibit an optimal energy-storage density of 3.6&#xa0;J/cm<sup>3</sup> with high efficiency of 88% under 300&#xa0;kV/cm. The superior properties can be maintained at a wide frequency and temperature range. Furthermore, 0.5BST-0.5NBSTL sample exhibits fast discharge time (<i>t</i><sub>0.9</sub> ~ 79.5&#xa0;ns) at 100&#xa0;kV/cm.</p>

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Enhancement of energy storage properties in BT-NBST relaxor ceramics

  • 期刊论文

  • 发表日期：

    2025年11月7日

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  • Ling-yun Deng,
  • Hua Qiang,
  • Zun-ping Xu

摘要

Na0.35Bi0.35Sr0.3TiO3–0.07La modified BaSn0.07Ti0.93O3 ((1−x)BST-xNBSTL, x = 0.3–0.6) ceramics were fabricated using citrate combustion method. (1−x)BST-xNBSTL solid solution exhibits typical relaxor characteristics. The remanent polarization is effectively decreased, the grain size is reduced, and enhanced breakdown strength is obtained after the addition of NBSTL into BST. As a result, 0.5BST-0.5NBSTL ceramics exhibit an optimal energy-storage density of 3.6 J/cm3 with high efficiency of 88% under 300 kV/cm. The superior properties can be maintained at a wide frequency and temperature range. Furthermore, 0.5BST-0.5NBSTL sample exhibits fast discharge time (t0.9 ~ 79.5 ns) at 100 kV/cm.