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Sodium niobate-based relaxor ferroelectric composite energy storage ceramic material
The invention discloses a sodium niobate-based relaxor ferroelectric composite energy storage ceramic material and a preparation method thereof, overcomes the defects of low anti-breakdown field intensity and high remanent polarization intensity of a pure sodium niobate material, and has more excellent comprehensive energy storage performance. The general formula of the ceramic material is (1-x) Na < 0.94 > Sm < 0.02 > NbO < 3-x > Bi < 0.5 > La < 0.5 > Ba < 0.67 > Ta < 0.33 > O < 3 >, x is more than or equal to 0.05 and less than or equal to 0.25, and subscript numbers represent the molar ratio of elements. Under the test frequency of 10 Hz and the environment temperature of 25 DEG C, the material has the saturation polarization intensity change range of 18.1 [mu] C/cm < 2 > < = Ps < = 35.5 [mu] C/cm < 2 >, the anti-breakdown field intensity change range of 280 kV/cm < = Eb < = 360 kV/cm, the effective energy storage density change range of 1.75 J/cm < 3 > < = Wrecc < = 2.49 J/cm < 3 >, and the energy storage efficiency change range of 40.46% < = eta < = 76.12%.
本发明公开了一种铌酸钠基弛豫铁电复合储能陶瓷材料及其制备方法，弥补了单纯铌酸钠材料抗击穿场强低以及剩余极化强度高的不足，综合储能性能更为优良。本发明陶瓷材料通式为(1‑x)Na0.94Sm0.02NbO3‑xBi0.5La0.5Ba0.67Ta0.33O3，式中0.05≤x≤0.25，下标数字代表元素的摩尔比。本发明材料在10Hz测试频率和25℃环境温度下，饱和极化强度变化范围为18.1μC/cm2≤Ps≤35.5μC/cm2，抗击穿场强变化范围为280kV/cm≤Eb≤360kV/cm，有效储能密度变化范围为1.75J/cm3≤Wrec≤2.49J/cm3，储能效率变化范围为40.46％≤η≤76.12％。
Sodium niobate-based relaxor ferroelectric composite energy storage ceramic material
The invention discloses a sodium niobate-based relaxor ferroelectric composite energy storage ceramic material and a preparation method thereof, overcomes the defects of low anti-breakdown field intensity and high remanent polarization intensity of a pure sodium niobate material, and has more excellent comprehensive energy storage performance. The general formula of the ceramic material is (1-x) Na < 0.94 > Sm < 0.02 > NbO < 3-x > Bi < 0.5 > La < 0.5 > Ba < 0.67 > Ta < 0.33 > O < 3 >, x is more than or equal to 0.05 and less than or equal to 0.25, and subscript numbers represent the molar ratio of elements. Under the test frequency of 10 Hz and the environment temperature of 25 DEG C, the material has the saturation polarization intensity change range of 18.1 [mu] C/cm < 2 > < = Ps < = 35.5 [mu] C/cm < 2 >, the anti-breakdown field intensity change range of 280 kV/cm < = Eb < = 360 kV/cm, the effective energy storage density change range of 1.75 J/cm < 3 > < = Wrecc < = 2.49 J/cm < 3 >, and the energy storage efficiency change range of 40.46% < = eta < = 76.12%.
本发明公开了一种铌酸钠基弛豫铁电复合储能陶瓷材料及其制备方法，弥补了单纯铌酸钠材料抗击穿场强低以及剩余极化强度高的不足，综合储能性能更为优良。本发明陶瓷材料通式为(1‑x)Na0.94Sm0.02NbO3‑xBi0.5La0.5Ba0.67Ta0.33O3，式中0.05≤x≤0.25，下标数字代表元素的摩尔比。本发明材料在10Hz测试频率和25℃环境温度下，饱和极化强度变化范围为18.1μC/cm2≤Ps≤35.5μC/cm2，抗击穿场强变化范围为280kV/cm≤Eb≤360kV/cm，有效储能密度变化范围为1.75J/cm3≤Wrec≤2.49J/cm3，储能效率变化范围为40.46％≤η≤76.12％。
Sodium niobate-based relaxor ferroelectric composite energy storage ceramic material
一种铌酸钠基弛豫铁电复合储能陶瓷材料
ZHANG LING (Autor:in) / YUN YAOYAO (Autor:in) / XIAO JIAMING (Autor:in) / ZHOU WEIJI (Autor:in)
10.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Novel sodium niobate-based composite dielectric energy storage ceramic material
| Europäisches Patentamt | 2023
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