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Effects of unique ion B-site modulation on the structure, dielectric and ferroelectric properties of NBT-BT based ceramics

  • Tong Wang
  • , Leyan Zhang
  • , Jiaqi Liu
  • , Aoyu Zhang
  • , Jiaxiang Liu
  • , Guanjun Chen
  • , Yan Cheng
  • , Haibo Yang
  • , Luo Kong
  • , Yonghao Xu
  • , Chunchun Li
  • , Li Jin
  • Shaanxi University of Science and Technology
  • Henan Polytechnic University
  • Guilin University of Technology
  • Xi'an Jiaotong University

科研成果: 期刊稿件文章同行评审

20 引用 (Scopus)

摘要

Ceramics are reliable materials for energy storage and high-power pulse discharge capacitors. However, breakdown electric field (BDS), recoverable energy storage density (Wrec), discharge time (t0.9) become the main constraints. As regards, compositional engineering was adopted to induce relaxation behavior in (Na0.5Bi0.5)0.94Ba0.06TiO3 (NBT-BT) based ceramics by which energy storage performance (ESP) and charge discharge properties (CDP) were significantly improved. (Na0.5Bi0.5)0.94Ba0.06(Ti1−xZrx)O3 (NBBTZ, x = 0, 0.04, 0.08, 0.12, 0.16, 0.20) ceramics are compositional modulation by introducing Zr4+ at B-site. The relaxor ferroelectrics, ESP and CDP of NBBTZ ceramics were significantly improved with the injection of Zr4+. Excellent ESP such as Wrec with 2.83 J cm−3, ultra-high normalized response (ξ) with 134.76 J kV−1 m−2 and maximum polarization (Pmax) of 39.96 μC cm−2 are obtained at 210 kV cm−1. Excellent high-temperature CDP has been excavated simultaneously. Discharge energy density (Wdis), power density (PD) and t0.9 of 0.601 J cm−3, 35.9 MW cm−3 and 83.5 ns were obtained at 100 °C and 100 kV cm−1, respectively. The above results show that NBBTZ ceramics have the ability to become reliable energy storage and pulse power capacitors.

源语言英语
期刊论文编号270
期刊Journal of Materials Science: Materials in Electronics
34
4
DOI
出版状态已出版 - 2月 2023

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