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High energy storage properties of 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics by incorporating Sr0.8Bi0.1γ0.1Ti0.8Zr0.2O2.95

出版	OAE Publishing Inc., 2023-05-19
主題	Technology & Engineering / Materials Science / General
URL	http://books.google.com.hk/books?id=QdcEEQAAQBAJ&hl=&source=gbs_api
EBook	SAMPLE

註釋Ceramics with high-energy storage density are in high demand across various industries. In this regard, lead-free relaxor ferroelectric ceramics were synthesized using the conventional solid-state reaction method with the composition (1-x)[0.94Bi0.5Na0.5TiO3-0.06BaTiO3]-xSr0.8Biγ0.1Ti0.8Zr0.2O0.95, abbreviated as BNBT-xSBTZ. The incorporation of SBTZ in BNBT ceramics significantly improved their relaxation properties. Specifically, the 0.91BNBT-0.09SBTZ ceramics displayed a breakdown electric field of up to 230 kV/cm, with a recoverable energy storage density (Wr) of 2.68 J/cm3 and an energy storage efficiency (η) of 74.4%. Additionally, this sample demonstrated remarkable temperature stability and fatigue resistance, with only an 11% decrease in Wr observed from room temperature to 140 °C and a 13.3% reduction in Wr after 105 electrical cycles. Therefore, the 0.91BNBT-0.09SBTZ ceramic is a promising dielectric material suitable for energy-storage dielectric capacitors.