Excellent energy storage properties in lead-free ferroelectric ceramics via heterogeneous structure design
Author:
Affiliation:
1. Shaanxi Normal University
2. Beijing Institute of Technology
3. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, China
4. University of Wollongong, Australia
Abstract
Dielectric capacitors with ultrahigh power density have emerged as promising candidates for essential energy storage components in electronic and electrical systems. They enable enhanced integration, miniaturization, and lightweight design. However, the development of dielectric materials for cutting-edge energy storage applications has been significantly limited by their low recoverable energy storage density (Wrec) and energy efficiency (η), especially at moderate electric fields. In this study, we fabricated 0.85K0.5Na0.5NbO3-0.15Sr0.7Nd0.2ZrO3 ceramics with an outstanding energy storage performance (Wrec ~7 J cm− 3, η ~ 92% at 500 kV cm− 1; Wrec ~14 J cm− 3, η ~ 89% at 760 kV cm− 1). The exceptional energy storage performance can be primarily attributed to the heterogeneous structure, where orthorhombic and tetragonal polar nanoregions are embedded in a cubic matrix, accounting for the delayed polarization saturation. This work provides a good paradigm for designing dielectric materials with ultrahigh energy storage density and excellent energy efficiency at a moderate applied electric field, aligning with the stringent demands for advanced energy storage applications.
Publisher
Springer Science and Business Media LLC
Reference50 articles.
1. 1. Yang, L. et al. Perovskite lead-free dielectrics for energy storage applications. Prog. Mater Sci. 102, 72–108 (2019).
2. 2. Dai, Z. et al. A strategy for high performance of energy storage and transparency in KNN-based ferroelectric ceramics. Chem. Eng. J. 427, 131959 (2022).
3. 3. Qu, B. et al. Lead-free relaxor ferroelectric ceramics with high optical transparency and energy storage ability. J. Mater. Chem. C 4, 2016, 1795–1803.
4. 4. Li, C. et al. Amelioration on energy storage performance of KNN-based transparent ceramics by optimizing the polarization and breakdown strength. J. Am. Ceram. Soc. 105, 6158–6167 (2022).
5. 5. Gao, J. et al. High temperature-stability of (Pb0.9La0.1)(Zr0.65Ti0.35)O3 ceramic for energy-storage applications at finite electric field strength. Scr. Mater. 137, 114–118 (2017).
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