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Journal of Materiomics 2023, 9(1): 19-26 https://doi.org/10.1016/j.jmat.2022.09.007
Research Article | Open Access | Issue | Published: 30 September 2022

Energy storage performance and phase transition under high electric field in Na/Ta co-doped AgNbO3 ceramics

Show Author's Information Mingyuan Zhaoa,b,  Jing Wangb( ),  Hao Yuanb,  Zehan Zhengb,  Lei Zhaoa( )
Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, College Physics Science and Technology, Hebei University, Baoding, 071002, China
State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

Peer review under responsibility of The Chinese Ceramic Society.

Keywords:
Phase transition, AgNbO3-based ceramics, Antiferroelectric ceramics, Tape casting process
Cite this article:
Zhao M, Wang J, Yuan H, et al. Energy storage performance and phase transition under high electric field in Na/Ta co-doped AgNbO3 ceramics. Journal of Materiomics, 2023, 9(1): 19-26. https://doi.org/10.1016/j.jmat.2022.09.007
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Abstract About this article

Lead-free antiferroelectric ceramics with high energy storage performance show great potential in pulsed power capacitors. However, poor breakdown strength and antiferroelectric stability are the two main drawbacks that limit the energy storage performance of antiferroelectric ceramics. Herein, high-quality (Ag1-xNax)(Nb1-xTax)O3 ceramics were prepared by the tape casting process. The breakdown strength was greatly improved as a result of the high density and fine grains, while the antiferroelectric stability was enhanced owning to the M2 phase. Benefiting from the synergistic improvement in breakdown strength and antiferroelectric stability, (Ag0.80Na0.20)(Nb0.80Ta0.20)O3 ceramic reveals a benign energy storage performance of Wrec = 5.8 J/cm3 and η = 61.7% with good temperature stability, frequency stability and cycling reliability. It is also found that the high applied electric field can promote the M2-M3 phase transition, which may provide ideas to improve the thermal stability of the energy storage performance in AgNbO3-based ceramics.

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Publication history

Received: 12 July 2022
Revised: 29 August 2022
Accepted: 09 September 2022
Published: 30 September 2022
Issue date: January 2023

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© 2022 The Authors.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No.51802068 and No.52073144), the Natural Science Foundation of Hebei Province, China (No. E2021201044), the Natural Science Foundation of Jiangsu Province, China (No. BK20201301), the State Key Laboratory of New Ceramic and Fine Processing Tsinghua University (No. KF202114).

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This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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