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Barium titanate-based relaxor ferroelectric ceramic material with high energy storage density and high power density in high electric field and preparation method thereof
The invention relates to a barium titanate-based relaxor ferroelectric ceramic material with high energy storage density and high power density in a high electric field and a preparation method of thebarium titanate-based relaxor ferroelectric ceramic material, and belongs to the technical field of dielectric ceramic material preparation. The chemical formula of the material disclosed by the invention is 0.65(Ba0.985La0.03)Ti0.985O3-0.35(Sr0.7Bi0.2)TiO3, and the material has the following properties: the material has high energy storage density in a high electric field at room temperature, the total energy storage density at room temperature in a 280kV/cm electric field is 2.91 J/cm <3>, and the effective energy storage density is 2.23 J/cm <3>, and the energy storage efficiency between 10 kV/cm and 280 kV/cm, and the energy storage efficiency is 75%. The material disclosed by the invention is synthesized by adopting a solid-phase reaction method at a relatively low temperature, is simple and convenient in preparation steps, low in equipment requirement, simple and easy in reaction condition control, good in repeatability, green and environment-friendly, obvious in relaxation phenomenon, low in sintering temperature and high in dielectric constant.
本发明涉及一种在高电场下具有高储能密度和高功率密度的钛酸钡基弛豫铁电陶瓷材料及其制备方法，属于介电陶瓷材料制备技术领域。本发明公开的材料的化学式为0.65(Ba0.985La0.03)Ti0.985O3‑0.35(Sr0.7Bi0.2)TiO3，具有如下性能：室温该材料在高电场下具有高储能密度，并且其在280kV/cm电场下室温总储能密度为2.91J/cm3，有效储能密度为2.23J/cm3；在10～280kV/cm之间的储能效率>75％。本发明的材料在较低温度下采用固相反应法合成，制备步骤简便，设备要求低且反应条件简单易控，重复性好、绿色环保，且弛豫现象明显、烧结温度低、具有高的介电常数。
Barium titanate-based relaxor ferroelectric ceramic material with high energy storage density and high power density in high electric field and preparation method thereof
The invention relates to a barium titanate-based relaxor ferroelectric ceramic material with high energy storage density and high power density in a high electric field and a preparation method of thebarium titanate-based relaxor ferroelectric ceramic material, and belongs to the technical field of dielectric ceramic material preparation. The chemical formula of the material disclosed by the invention is 0.65(Ba0.985La0.03)Ti0.985O3-0.35(Sr0.7Bi0.2)TiO3, and the material has the following properties: the material has high energy storage density in a high electric field at room temperature, the total energy storage density at room temperature in a 280kV/cm electric field is 2.91 J/cm <3>, and the effective energy storage density is 2.23 J/cm <3>, and the energy storage efficiency between 10 kV/cm and 280 kV/cm, and the energy storage efficiency is 75%. The material disclosed by the invention is synthesized by adopting a solid-phase reaction method at a relatively low temperature, is simple and convenient in preparation steps, low in equipment requirement, simple and easy in reaction condition control, good in repeatability, green and environment-friendly, obvious in relaxation phenomenon, low in sintering temperature and high in dielectric constant.
本发明涉及一种在高电场下具有高储能密度和高功率密度的钛酸钡基弛豫铁电陶瓷材料及其制备方法，属于介电陶瓷材料制备技术领域。本发明公开的材料的化学式为0.65(Ba0.985La0.03)Ti0.985O3‑0.35(Sr0.7Bi0.2)TiO3，具有如下性能：室温该材料在高电场下具有高储能密度，并且其在280kV/cm电场下室温总储能密度为2.91J/cm3，有效储能密度为2.23J/cm3；在10～280kV/cm之间的储能效率>75％。本发明的材料在较低温度下采用固相反应法合成，制备步骤简便，设备要求低且反应条件简单易控，重复性好、绿色环保，且弛豫现象明显、烧结温度低、具有高的介电常数。
Barium titanate-based relaxor ferroelectric ceramic material with high energy storage density and high power density in high electric field and preparation method thereof
一种在高电场下具有高储能密度和高功率密度的钛酸钡基弛豫铁电陶瓷材料及其制备方法
2021-02-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024