A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material with antiferroelectric-like characteristic and preparation method of sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material
The invention discloses a sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material with antiferroelectric-like characteristics and a preparation method thereof, the ceramic material comprises the sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material with antiferroelectric-like characteristics represented by a general formula (1-x) (Na < 0.3 > Bi < 0.38 > Sr < 0.28 > TiO3)-xBi (Mg < 0.5 > Zr < 0.5 >) O3, and x is more than or equal to 0 and less than or equal to 0.2. The structure is regulated and controlled from multiple dimensions through a collaborative optimization strategy, the lead-free relaxor ferroelectric energy storage ceramic material with extremely low ferroelectric hysteresis loss and similar antiferroelectric characteristics is obtained, a ferroelectric hysteresis loop of the lead-free relaxor ferroelectric energy storage ceramic material is in a slender girdling shape, and the girdling degree is obviously increased along with increase of the content of Bi (Mg0. 5Zr0. 5) O3. Meanwhile, due to the increase of the content of Bi (Mg0. 5Zr0. 5) O3, the breakdown electric field of the ceramic material is greatly improved, polarization saturation is delayed, the energy storage performance of the ceramic material is greatly improved, and high energy storage density and efficiency can be achieved at the same time. According to the invention, the problems of low energy storage density and mismatch between the energy storage density and the efficiency of a dielectric material are solved to a certain extent, and a preparation method and material selection are provided for developing an environment-friendly dielectric energy storage ceramic capacitor with high energy storage density and efficiency.
本发明公开了一种具有类反铁电特性的钛酸铋钠基无铅弛豫铁电储能陶瓷材料及其制备方法，该陶瓷材料包括用通式(1‑x)(Na0.3Bi0.38Sr0.28TiO3)‑xBi(Mg0.5Zr0.5)O3表示的具有类反铁电特性的钛酸铋钠基无铅弛豫铁电储能陶瓷材料，其中，x的范围为0≤x≤0.2。本发明通过协同优化策略从多维度对所述结构进行调控，获得了具有极低电滞损耗和类反铁电体特性的无铅弛豫铁电储能陶瓷材料，其电滞回线呈纤细的束腰型并随着Bi(Mg0.5Zr0.5)O3含量的增加束腰程度明显增大。同时，Bi(Mg0.5Zr0.5)O3含量的增加大幅提高了所述陶瓷材料的击穿电场并延迟了极化饱和，使其储能性能得到大幅改善，能同时兼具高储能密度及效率。本发明在一定程度上解决了电介质材料储能密度低以及储能密度与效率失配的问题，为开发兼具高储能密度及效率的环境友好型电介质储能陶瓷电容器提供了一种制备方法和材料选择。
Sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material with antiferroelectric-like characteristic and preparation method of sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material
The invention discloses a sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material with antiferroelectric-like characteristics and a preparation method thereof, the ceramic material comprises the sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material with antiferroelectric-like characteristics represented by a general formula (1-x) (Na < 0.3 > Bi < 0.38 > Sr < 0.28 > TiO3)-xBi (Mg < 0.5 > Zr < 0.5 >) O3, and x is more than or equal to 0 and less than or equal to 0.2. The structure is regulated and controlled from multiple dimensions through a collaborative optimization strategy, the lead-free relaxor ferroelectric energy storage ceramic material with extremely low ferroelectric hysteresis loss and similar antiferroelectric characteristics is obtained, a ferroelectric hysteresis loop of the lead-free relaxor ferroelectric energy storage ceramic material is in a slender girdling shape, and the girdling degree is obviously increased along with increase of the content of Bi (Mg0. 5Zr0. 5) O3. Meanwhile, due to the increase of the content of Bi (Mg0. 5Zr0. 5) O3, the breakdown electric field of the ceramic material is greatly improved, polarization saturation is delayed, the energy storage performance of the ceramic material is greatly improved, and high energy storage density and efficiency can be achieved at the same time. According to the invention, the problems of low energy storage density and mismatch between the energy storage density and the efficiency of a dielectric material are solved to a certain extent, and a preparation method and material selection are provided for developing an environment-friendly dielectric energy storage ceramic capacitor with high energy storage density and efficiency.
本发明公开了一种具有类反铁电特性的钛酸铋钠基无铅弛豫铁电储能陶瓷材料及其制备方法，该陶瓷材料包括用通式(1‑x)(Na0.3Bi0.38Sr0.28TiO3)‑xBi(Mg0.5Zr0.5)O3表示的具有类反铁电特性的钛酸铋钠基无铅弛豫铁电储能陶瓷材料，其中，x的范围为0≤x≤0.2。本发明通过协同优化策略从多维度对所述结构进行调控，获得了具有极低电滞损耗和类反铁电体特性的无铅弛豫铁电储能陶瓷材料，其电滞回线呈纤细的束腰型并随着Bi(Mg0.5Zr0.5)O3含量的增加束腰程度明显增大。同时，Bi(Mg0.5Zr0.5)O3含量的增加大幅提高了所述陶瓷材料的击穿电场并延迟了极化饱和，使其储能性能得到大幅改善，能同时兼具高储能密度及效率。本发明在一定程度上解决了电介质材料储能密度低以及储能密度与效率失配的问题，为开发兼具高储能密度及效率的环境友好型电介质储能陶瓷电容器提供了一种制备方法和材料选择。
Sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material with antiferroelectric-like characteristic and preparation method of sodium bismuth titanate-based lead-free relaxor ferroelectric energy storage ceramic material
一种具有类反铁电特性的钛酸铋钠基无铅弛豫铁电储能陶瓷材料及其制备方法
YUAN YING (author) / MENG XIANGJUN (author) / ZHONG CHAOWEI (author) / ZHANG SHUREN (author)
2024-11-05
Patent
Electronic Resource
Chinese