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Zhao et al. Microstructures 2023;3:2023002 Microstructures
DOI: 10.20517/microstructures.2022.21

Research Article Open Access

BaTiO -NaNbO energy storage ceramics with an
3
3
ultrafast charge-discharge rate and temperature-
stable power density

Peiyao Zhao, Longtu Li, Xiaohui Wang

State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University,
Beijing 100084, China.
Correspondence to: Prof. Xiaohui Wang, State Key Laboratory of New Ceramics and Fine Processing, School of Materials
Science and Engineering, Tsinghua University, Beijing 100084, China. E-mail: wxh@tsinghua.edu.cn
How to cite this article: Zhao P, Li L, Wang X. BaTiO -NaNbO energy storage ceramics with an ultrafast charge-discharge rate
3 3
and temperature-stable power density. Microstructures 2023;3:2023002. https://dx.doi.org/10.20517/microstructures.2022.21

Received: 26 Aug 2022 First Decision: 28 Sep 2022 Revised: 11 Oct 2022 Accepted: 28 Oct 2022 Published: 5 Jan 2023

Academic Editors: Shiqing Deng, Ruzhong Zuo, Shujun Zhang Copy Editor: Fangling Lan Production Editor: Fangling Lan

Abstract
Dielectric capacitors with ultrafast charge-discharge rates are extensively used in electrical and electronic systems.
To meet the growing demand for energy storage applications, researchers have devoted significant attention to
dielectric ceramics with excellent energy storage properties. As a result, the awareness of the importance of the
pulsed discharge behavior of dielectric ceramics and conducting characterization studies has been raised.
However, the temperature stability of pulsed discharge behavior, which is significant for pulsed power applications,
is still not given the necessary consideration. Here, we systematically investigate the microstructures, energy
storage properties and discharge behaviors of nanograined (1-x)BaTiO -xNaNbO ceramics prepared by a two-step
3 3
sintering method. The 0.60BaTiO -0.40NaNbO ceramics with relaxor ferroelectric characteristics possess an
3 3
optimal discharge energy density of 3.07 J cm , a high energy efficiency of 92.6%, an ultrafast discharge rate of
-3
-3
39 ns and a high power density of 100 MW cm . In addition to stable energy storage properties in terms of
frequency, fatigue and temperature, the 0.60BaTiO -0.40NaNbO ceramics exhibit temperature-stable power
3 3
density, thereby illustrating their significant potential for power electronics and pulsed power applications.
Keywords: BaTiO -NaNbO , energy storage properties, charge-discharge rate, temperature-stable power density
3 3

© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0
International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing,
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