High energy storage density of tetragonal PBLZST antiferroelectric ceramics with enhanced dielectric breakdown strength

Yujing Zhang, Pin Liu, Meng Shen, Wenru Li, Weigang Ma, Yanfeng Qin, Haibo Zhang, Guangzu Zhang, Qing Wang, Shenglin Jiang

Research output: Contribution to journalArticle

Abstract

Tetragonal PBLZST antiferroelectric ceramics is the most studied energy storage material because of its unique double hysteresis loops. However, the dielectric breakdown strength of PBLZST is relatively low, which severely restricts to acquire high energy storage density. In this paper, the PBLZST:xMgO ceramics are synthesized by a two-step calcining method. High-temperature calcination of PBLZST can reduce its activity and inhibit the diffusion between PBLZST and MgO. By regulating the amount of MgO, the influence on the microstructure and properties of PBLZST are systematically researched. As the amount of MgO increases from 0 to 0.2 wt%, the dielectric breakdown strength enhances from 175.2 to 265.2 kV/cm. The PBLZST:xMgO ceramics reach its highest recoverable energy density (5.02 J/cm3) at x = 0.1 wt%. And, its energy storage density only changes by 15.7% with the temperature ranging from 25 to 120 °C. Results prove that introducing MgO into PBLZST with a two-step calcining method can effectively enhance the dielectric breakdown strength.

Original languageEnglish (US)
JournalCeramics International
DOIs
StateAccepted/In press - Jan 1 2019

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Electric breakdown
Energy storage
Hysteresis loops
Calcination
Thermodynamic properties
Temperature
Microstructure

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

Zhang, Yujing ; Liu, Pin ; Shen, Meng ; Li, Wenru ; Ma, Weigang ; Qin, Yanfeng ; Zhang, Haibo ; Zhang, Guangzu ; Wang, Qing ; Jiang, Shenglin. / High energy storage density of tetragonal PBLZST antiferroelectric ceramics with enhanced dielectric breakdown strength. In: Ceramics International. 2019.
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High energy storage density of tetragonal PBLZST antiferroelectric ceramics with enhanced dielectric breakdown strength. / Zhang, Yujing; Liu, Pin; Shen, Meng; Li, Wenru; Ma, Weigang; Qin, Yanfeng; Zhang, Haibo; Zhang, Guangzu; Wang, Qing; Jiang, Shenglin.

In: Ceramics International, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Qin, Yanfeng

AU - Zhang, Haibo

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AU - Wang, Qing

AU - Jiang, Shenglin

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AB - Tetragonal PBLZST antiferroelectric ceramics is the most studied energy storage material because of its unique double hysteresis loops. However, the dielectric breakdown strength of PBLZST is relatively low, which severely restricts to acquire high energy storage density. In this paper, the PBLZST:xMgO ceramics are synthesized by a two-step calcining method. High-temperature calcination of PBLZST can reduce its activity and inhibit the diffusion between PBLZST and MgO. By regulating the amount of MgO, the influence on the microstructure and properties of PBLZST are systematically researched. As the amount of MgO increases from 0 to 0.2 wt%, the dielectric breakdown strength enhances from 175.2 to 265.2 kV/cm. The PBLZST:xMgO ceramics reach its highest recoverable energy density (5.02 J/cm3) at x = 0.1 wt%. And, its energy storage density only changes by 15.7% with the temperature ranging from 25 to 120 °C. Results prove that introducing MgO into PBLZST with a two-step calcining method can effectively enhance the dielectric breakdown strength.

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