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Research Article | Open Access

Ultrahigh energy storage performance realized in AgNbO3-based antiferroelectric materials via multiscale engineering

Mingyuan Zhaoa,b, Jing Wangb( ), Ji Zhangc, Li-Feng Zhud( ), Lei Zhaoa( )
Key Laboratory of High-Precision Computation and Application of Quantum Field Theory of Hebei Province, College of Physics Science & 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
School of Materials Science and Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Abstract

Antiferroelectric (AFE) materials are promising for the applications in advanced high-power electric and electronic devices. Among them, AgNbO3 (AN)-based ceramics have gained considerable attention due to their excellent energy storage performance. Herein, multiscale synergistic modulation is proposed to improve the energy storage performance of AN-based materials, whereby the multilayer structure is employed to improve the breakdown strength (Eb), and Sm/Ta doping is utilized to enhance the AFE stability. As a result, ultrahigh recoverable energy storage density (Wrec) up to 15.0 J·cm−3 and energy efficiency of 82.8% are obtained at 1500 kV·cm−1 in Sm/Ta co-doped AN multilayer ceramic capacitor (MLCC), which are superior to those of the state-of-the-art AN-based ceramic capacitor. Moreover, the discharge energy density (Wd) in direct-current charge–discharge performance reaches 9.1 J·cm−3, which is superior to that of the reported lead-free energy storage systems. The synergistic design of composition and multilayer structure provides an applicable method to optimize the energy storage performance in all dielectric energy storage systems.

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Keywords

antiferroelectric (AFE)AgNbO3 (AN)-based ceramicsenergy storagemultilayer structure

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Journal of Advanced Ceramics
Volume 12 Issue 6,
June 2023
Pages 1166-1177
DOI: 10.26599/JAC.2023.9220745

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Cite this article:
Zhao M, Wang J, Zhang J, et al. Ultrahigh energy storage performance realized in AgNbO3-based antiferroelectric materials via multiscale engineering. Journal of Advanced Ceramics, 2023, 12(6): 1166-1177. https://doi.org/10.26599/JAC.2023.9220745

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Received: 30 January 2023
Revised: 28 February 2023
Accepted: 21 March 2023
Published: 17 May 2023
© The Author(s) 2023.

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