Superior energy storage performance of BNT-based ferroelectric ceramics based on maintaining high polarization and breakdown strength

Mingjia Jiang; Zhanhui Peng; Qiyuan Zhou; Di Wu; Lingling Wei; Pengfei Liang; Xiaolian Chao; Zupei Yang

doi:10.1142/S2010135X23400052

Journal of Advanced Dielectrics, Volume. 14, Issue 4, 2340005(2024)

Superior energy storage performance of BNT-based ferroelectric ceramics based on maintaining high polarization and breakdown strength

Mingjia Jiang¹, Zhanhui Peng^1、*, Qiyuan Zhou¹, Di Wu¹, Lingling Wei², Pengfei Liang³, Xiaolian Chao^1、**, and Zupei Yang^1、***

Author Affiliations

¹Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, Shaanxi, P. R. China

²School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062 Shaanxi, P. R. China

³School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062 Shaanxi, P. R. China

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Bi $_{0.5}$ Na $_{0.5}$ TiO₃ (BNT)-based lead-free ceramics with superior ferroelectric properties are considered to be extremely advantageous in energy storage capacitors for future green technologies. Here, we demonstrate an approach to achieve both ultrahigh energy density $W_{rec}$ and efficiency $η$ by regulating the multiscale electropolar structures and microstructure. A satisfactory energy storage performance of a high $W_{rec}$ of $4.02 J ? {cm}^{? 3}$ , and a decent $η$ of 80% under $415 kV ? {cm}^{? 1}$ are attained in the 0.5(BNT-CS)-0.5SB $_{0.2}$ T ceramic (abbreviated as BNT-0.2SBT). Moreover, BNT-0.2SBT exhibits superior power density ( $P_{D} = 107 MW ? {cm}^{? 3}$ ), ultrafast discharge time ( $t_{0.9} = 116$ ns) at $150 kV ? {cm}^{? 1}$ , and good temperature stability. The findings in this work not only demonstrate that a valid candidate, but also provide a new idea of how to achieve both high-energy storage density and efficiency in lead-free ferroelectric materials.

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Keywords

Bi_0.5Na_0.5TiO₃ ceramics breakdown strength Energy storage relaxor characteristics

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Mingjia Jiang, Zhanhui Peng, Qiyuan Zhou, Di Wu, Lingling Wei, Pengfei Liang, Xiaolian Chao, Zupei Yang. Superior energy storage performance of BNT-based ferroelectric ceramics based on maintaining high polarization and breakdown strength[J]. Journal of Advanced Dielectrics, 2024, 14(4): 2340005

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Paper Information

Category: Research Articles

Received: Oct. 15, 2023

Accepted: Nov. 3, 2023

Published Online: Nov. 5, 2024

The Author Email: Peng Zhanhui (pzh@snnu.edu.cn), Chao Xiaolian (chaoxl@snnu.edu.cn), Yang Zupei (yangzp@snnu.edu.cn)

DOI:10.1142/S2010135X23400052

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