Scholarlink

<p>NaNbO<sub>3</sub> (NN) has potential applications in energy storage devices due to its antiferroelectricity and environmentally friendly characteristics, but its low dielectric breakdown field strength (<i>E</i><sub><i>b</i></sub>) and energy storage efficiency (<i>ƞ</i>) limit practical applications. In this study, the structure and electrical characteristics of NaNbO<sub>3</sub> were modulated by introducing Sr(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> (SMN) to optimize its energy storage performance. The (1-<i>x</i>)NN-<i>x</i>SMN solid solution was synthesized using a classic solid-state reaction approach. According to X-ray diffraction analysis results, the prepared ceramics exhibit a pure phase when <i>x</i> is less than or equal to 0.15. With the increment of <i>x</i>, SMN disturbs the long-range polar order, induces pronounced relaxation ferroelectric phase (RFE) with reduced remnant polarization (<i>P</i><sub><i>r</i></sub>), and enhances <i>E</i><sub><i>b</i></sub>, leading to significant increases in recoverable energy storage density (<i>W</i><sub><i>rec</i></sub>) and <i>η</i>. The optimized composition 0.875NN-0.125SMN has the best dielectric energy storage properties with a <i>W</i><sub><i>rec</i></sub> of 1.28&#xa0;J/cm<sup>3</sup> and an <i>η</i> of 88%.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhanced electrical energy storage performance in NaNbO₃-based antiferroelectric ceramics modified with Sr(Mg1/3Nb2/3)O3

  • 期刊论文

  • 发表日期：

    2025年9月9日

查看全文
  • Zhilong Hu,
  • Hongbo Liu,
  • Jian Guo Tang,
  • Soo Wohn Lee,
  • Jun Li

摘要

NaNbO3 (NN) has potential applications in energy storage devices due to its antiferroelectricity and environmentally friendly characteristics, but its low dielectric breakdown field strength (Eb) and energy storage efficiency (ƞ) limit practical applications. In this study, the structure and electrical characteristics of NaNbO3 were modulated by introducing Sr(Mg1/3Nb2/3)O3 (SMN) to optimize its energy storage performance. The (1-x)NN-xSMN solid solution was synthesized using a classic solid-state reaction approach. According to X-ray diffraction analysis results, the prepared ceramics exhibit a pure phase when x is less than or equal to 0.15. With the increment of x, SMN disturbs the long-range polar order, induces pronounced relaxation ferroelectric phase (RFE) with reduced remnant polarization (Pr), and enhances Eb, leading to significant increases in recoverable energy storage density (Wrec) and η. The optimized composition 0.875NN-0.125SMN has the best dielectric energy storage properties with a Wrec of 1.28 J/cm3 and an η of 88%.