BaTiO3–(Na0.5Bi0.5)TiO3 Ceramic Materials Prepared via Multiple Design Strategies with Improved Energy Storage
The investigation of environmentally friendly, Pb-free ceramic dielectric materials with excellent energy storage capability represents a fundamental yet challenging research direction for the development of next-generation high-power capacitors. In this study, linear dielectric Ca<sub>0.7</sub>La<sub>0.2</sub>(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> was added into [0.65BaTiO<sub>3</sub>-0.35(Na<sub>0.5</sub>Bi<sub>0.5</sub>)TiO<sub>3</sub>] to form a solid solution. The introduction of Ca<sub>0.7</sub>La<sub>0.2</sub>(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> modified the crystal structure, enhanced insulation performance and breakdown strength, and reduced hysteresis loss. These improvements collectively contributed to higher energy storage density and efficiency (<i>η</i>). The ceramic pellet with the optimal 10 mol% Ca<sub>0.7</sub>La<sub>0.2</sub>(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub> demonstrated a higher retrievable energy density (~3.40 J cm<sup>-3</sup>) and efficiency (~81%) at a breakdown strength of 340 kV cm<sup>-1</sup> compared to BaTiO<sub>3</sub>-based ferroelectric ceramics. The sample also exhibited good stability across a temperature range of 30-90 °C and a frequency range of 0.5-300 Hz. Thus, the as-prepared ceramics sample exhibited significant potential for pulsed power device applications.
Authors
- P. Rosaiah (ORCID: https://orcid.org/0000-0001-9554-4972)
- Jingjing Guo (ORCID: https://orcid.org/0000-0002-3893-2319)
- Xuefeng Zhang (ORCID: https://orcid.org/0000-0003-1654-3969)
- S.V. Prabhakar Vattikuti (ORCID: https://orcid.org/0000-0002-9009-5466)
- Jingxiang Zhang (ORCID: https://orcid.org/0000-0001-7547-5973)
- Qingfeng Zhang (ORCID: https://orcid.org/0000-0002-3495-1352)
- Qing Ma
- Ting Wang (ORCID: https://orcid.org/0000-0003-1144-8700)
- Wu Xu (ORCID: https://orcid.org/0000-0002-2685-8684)
- Jianming Deng (ORCID: https://orcid.org/0009-0004-9423-4365)
Institutions
- Harbin Institute of Technology (CN)
- Yeungnam University (KR)
- Hubei University (CN)
- Saveetha University (IN)
- Huizhou University (CN)
Publication Details
- Journal
- Nanomaterials
- Published
- 2025-11-15
- DOI
- https://doi.org/10.3390/nano15221724
- Primary Topic
- Ferroelectric and Piezoelectric Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Huizhou University
- Basic and Applied Basic Research Foundation of Guangdong Province