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Journal of Advanced Ceramics 2022, 11(2): 283-294 https://doi.org/10.1007/s40145-021-0532-8
Research Article | Open Access | Issue | Published: 11 January 2022

Remarkably enhanced dielectric stability and energy storage properties in BNT-BST relaxor ceramics by A-site defect engineering for pulsed power applications

Show Author's Information Zhipeng LIa,†,  Dong-Xu LIa,b,†,  Zong-Yang SHENa( ),  Xiaojun ZENGa,  Fusheng SONGa,  Wenqin LUOa,  Xingcai WANGc,  Zhumei WANGa,  Yueming LIa
Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, China National Light Industry Key Laboratory of Functional Ceramic Materials, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
Chengdu Hongke Electronic Technology Co., Ltd., Chengdu 610000, China

† Zhipeng Li and Dong-Xu Li contributed equally to this work.

Keywords:
energy storage ceramics, Bi0.5Na0.5TiO3 (BNT), relaxor ferroelectrics, defect engineering, ceramic capacitor
Cite this article:
LI Z, LI D-X, SHEN Z-Y, et al. Remarkably enhanced dielectric stability and energy storage properties in BNT-BST relaxor ceramics by A-site defect engineering for pulsed power applications. Journal of Advanced Ceramics, 2022, 11(2): 283-294. https://doi.org/10.1007/s40145-021-0532-8
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Abstract Full text About this article

Lead-free bulk ceramics for advanced pulsed power capacitors show relatively low recoverable energy storage density (Wrec) especially at low electric field condition. To address this challenge, we propose an A-site defect engineering to optimize the electric polarization behavior by disrupting the orderly arrangement of A-site ions, in which Ba0.105Na0.325Sr0.245-1.5x▯0.5xBi0.325+xTiO3 (BNS0.245-1.5x▯0.5xB0.325+xT, x = 0, 0.02, 0.04, 0.06, and 0.08) lead-free ceramics are selected as the representative. The BNS0.245-1.5x▯0.5xB0.325+xT ceramics are prepared by using pressureless solid-state sintering and achieve large Wrec (1.8 J/cm3) at a low electric field (@110 kV/cm) when x = 0.06. The value of 1.8 J/cm3 is super high as compared to all other Wrec in lead-free bulk ceramics under a relatively low electric field (< 160 kV/cm). Furthermore, a high dielectric constant of 2930 within 15% fluctuation in a wide temperature range of 40-350 ℃ is also obtained in BNS0.245-1.5x▯0.5xB0.325+xT (x = 0.06) ceramics. The excellent performances can be attributed to the A-site defect engineering, which can reduce remnant polarization (Pr) and improve the thermal evolution of polar nanoregions (PNRs). This work confirms that the BNS0.245-1.5x▯0.5xB0.325+xT (x = 0.06) ceramics are desirable for advanced pulsed power capacitors, and will push the development of a series of Bi0.5Na0.5TiO3 (BNT)-based ceramics with high Wrec and high-temperature stability.


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Remarkably enhanced dielectric stability and energy storage properties in BNT-BST relaxor ceramics by A-site defect engineering for pulsed power applications

Show Author's information Zhipeng LIa,†, Dong-Xu LIa,b,†, Zong-Yang SHENa( ), Xiaojun ZENGa, Fusheng SONGa, Wenqin LUOa, Xingcai WANGc, Zhumei WANGa, Yueming LIa
Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, China National Light Industry Key Laboratory of Functional Ceramic Materials, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
Chengdu Hongke Electronic Technology Co., Ltd., Chengdu 610000, China

† Zhipeng Li and Dong-Xu Li contributed equally to this work.

Abstract

Lead-free bulk ceramics for advanced pulsed power capacitors show relatively low recoverable energy storage density (Wrec) especially at low electric field condition. To address this challenge, we propose an A-site defect engineering to optimize the electric polarization behavior by disrupting the orderly arrangement of A-site ions, in which Ba0.105Na0.325Sr0.245-1.5x▯0.5xBi0.325+xTiO3 (BNS0.245-1.5x▯0.5xB0.325+xT, x = 0, 0.02, 0.04, 0.06, and 0.08) lead-free ceramics are selected as the representative. The BNS0.245-1.5x▯0.5xB0.325+xT ceramics are prepared by using pressureless solid-state sintering and achieve large Wrec (1.8 J/cm3) at a low electric field (@110 kV/cm) when x = 0.06. The value of 1.8 J/cm3 is super high as compared to all other Wrec in lead-free bulk ceramics under a relatively low electric field (< 160 kV/cm). Furthermore, a high dielectric constant of 2930 within 15% fluctuation in a wide temperature range of 40-350 ℃ is also obtained in BNS0.245-1.5x▯0.5xB0.325+xT (x = 0.06) ceramics. The excellent performances can be attributed to the A-site defect engineering, which can reduce remnant polarization (Pr) and improve the thermal evolution of polar nanoregions (PNRs). This work confirms that the BNS0.245-1.5x▯0.5xB0.325+xT (x = 0.06) ceramics are desirable for advanced pulsed power capacitors, and will push the development of a series of Bi0.5Na0.5TiO3 (BNT)-based ceramics with high Wrec and high-temperature stability.

Keywords: energy storage ceramics, Bi0.5Na0.5TiO3 (BNT), relaxor ferroelectrics, defect engineering, ceramic capacitor

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Publication history

Received: 26 June 2021
Revised: 20 August 2021
Accepted: 31 August 2021
Published: 11 January 2022
Issue date: February 2022

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© The Author(s) 2021.

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 51767010) and the Key Project of Natural Science Foundation of Jiangxi Province of China (No. 20212ACB204010).

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