Dielectric behavior and impedance spectroscopy in lead-free BNT-BT-NBN perovskite ceramics for energy storage

Qi Xu, Michael T. Lanagan, Xuechen Huang, Juan Xie, Lin Zhang, Hua Hao, Hanxing Liu

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

The dielectric behavior, impedance spectroscopy and energy-storage properties of 0.85[(1-x)Bi0.5Na0.5TiO3-xBaTiO3]-0.15Na0.73Bi0.09NbO3 [(BNT-xBT)-NBN] ternary ceramics were investigated. Temperature dependent permittivity curves displayed two depressed anomalies, resulting in significantly improved dielectric temperature stability. (BNT-9BT)-NBN showed a permittivity of 1680 at 150 °C with Δϵ/ϵ150 °C varying no more than ±10% up to 340 °C. From the complex impedance analysis, grain and grain boundary shared the same time constant. The high temperature resistivity followed the Arrhenius law with Ea=1.7-2.0 eV, suggesting intrinsic band-type electronic conduction. The maximum energy-storage density of all the samples reached 1.1-1.4 J/cm3, accompanied with good temperature stability in the range of 25-140 °C. These results indicate that (BNT-xBT)-NBN system should be a promising lead-free material for energy-storage capacitor applications.

Original languageEnglish (US)
Pages (from-to)9728-9736
Number of pages9
JournalCeramics International
Volume42
Issue number8
DOIs
StatePublished - Jun 1 2016

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Perovskite
Energy storage
Lead
Spectroscopy
Permittivity
Temperature
Grain boundaries
Capacitors
perovskite

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Xu, Qi ; Lanagan, Michael T. ; Huang, Xuechen ; Xie, Juan ; Zhang, Lin ; Hao, Hua ; Liu, Hanxing. / Dielectric behavior and impedance spectroscopy in lead-free BNT-BT-NBN perovskite ceramics for energy storage. In: Ceramics International. 2016 ; Vol. 42, No. 8. pp. 9728-9736.
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Dielectric behavior and impedance spectroscopy in lead-free BNT-BT-NBN perovskite ceramics for energy storage. / Xu, Qi; Lanagan, Michael T.; Huang, Xuechen; Xie, Juan; Zhang, Lin; Hao, Hua; Liu, Hanxing.

In: Ceramics International, Vol. 42, No. 8, 01.06.2016, p. 9728-9736.

Research output: Contribution to journalArticle

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AU - Lanagan, Michael T.

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AU - Hao, Hua

AU - Liu, Hanxing

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