Scholarlink

<p>High efficiency (<i>η</i>) is urgently desired for electronic energy storage devices. In this work, an extremely high energy storage efficiency (~ 99.5%) and energy storage density of 2.83 J/cm<sup>3</sup> are achieved in lead-free relaxor ferroelectric (1–<i>x</i>)(0.9BaTiO<sub>3</sub>–0.1BiMg<sub>0.5</sub>Ti<sub>0.5</sub>O<sub>3</sub>)-<i>x</i>Bi(Mg<sub>0.5</sub>Sn<sub>0.5</sub>)O<sub>3</sub>[(1–<i>x</i>) (0.9BT–0.1BMT)–<i>x</i>BMS] ceramic (<i>x</i> = 0.09). Excellent temperature stability with a variation of <i>η</i> less than 1.5% is also obtained in a wide temperature range from 30 to 150&#xa0;°C. Temperature dependence of the dielectric permittivity of (1–<i>x</i>)(0.9BT–0.1BMT)-<i>x</i>BMS exhibits a typical dipolar-glass-like relaxor ferroelectric behavior. As a result, the ultra-high efficiency of the ceramic is attributed to the weak-coupling polar nanoregions (PNRs) which are analyzed using the Vogel-Fulcher formula and phenomenological statistical model. These results not only help to understand the origin of high efficiency in the (1–<i>x</i>)(0.9BT–0.1BMT)-<i>x</i>BMS system but also provide an effective approach to improve the comprehensive properties of other lead-free ceramic systems used in next-generation power capacitors.</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

Energy storage efficiency ≥ 99.5% achieved in weak-coupling ferroelectric relaxor BaTiO3–Bi(Mg0.5Ti0.5)O3 –Bi(Mg0.5Sn0.5)O3 system

  • 期刊论文

  • 发表日期：

    2025年1月7日

查看全文
  • Riyu Guan,
  • Kaiyuan Chen,
  • Feifei Han,
  • Zhi Yuan,
  • Dingyuan Wang,
  • Yisong Bai,
  • Xue Chen,
  • Biaolin Peng,
  • Shiguang Yan,
  • Dongyan Yu,
  • Xiuyun Lei,
  • Laijun Liu

摘要

High efficiency (η) is urgently desired for electronic energy storage devices. In this work, an extremely high energy storage efficiency (~ 99.5%) and energy storage density of 2.83 J/cm3 are achieved in lead-free relaxor ferroelectric (1–x)(0.9BaTiO3–0.1BiMg0.5Ti0.5O3)-xBi(Mg0.5Sn0.5)O3[(1–x) (0.9BT–0.1BMT)–xBMS] ceramic (x = 0.09). Excellent temperature stability with a variation of η less than 1.5% is also obtained in a wide temperature range from 30 to 150 °C. Temperature dependence of the dielectric permittivity of (1–x)(0.9BT–0.1BMT)-xBMS exhibits a typical dipolar-glass-like relaxor ferroelectric behavior. As a result, the ultra-high efficiency of the ceramic is attributed to the weak-coupling polar nanoregions (PNRs) which are analyzed using the Vogel-Fulcher formula and phenomenological statistical model. These results not only help to understand the origin of high efficiency in the (1–x)(0.9BT–0.1BMT)-xBMS system but also provide an effective approach to improve the comprehensive properties of other lead-free ceramic systems used in next-generation power capacitors.