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Sodium bismuth titanate-based lead-free energy storage ceramic material with high ferroelectric stability and temperature stability and preparation method of sodium bismuth titanate-based lead-free energy storage ceramic material
The invention discloses a sodium bismuth titanate-based lead-free energy storage ceramic material with high ferroelectric stability and temperature stability and a preparation method thereof, the structural general formula of the ceramic material is (1-x) (0.85 Bi < 0.5 > Na < 0.5 > TiO < 3-0.15 > NaNbO < 3 >)-xSrHfO < 3 >, and the value of x is 0.04-0.15. The ceramic material is prepared through proportioning, ball milling, pre-sintering, secondary ball milling, sieving, tabletting and sintering, the preparation method is simple, the cost is low, the repeatability is good, the yield is high, the obtained ceramic material has high ferroelectric stability (cycle stability and frequency stability), good temperature stability and good energy storage characteristic, when x is equal to 0.10, the dielectric constant is epsilon r150 DEG C at 100 kHz, and the dielectric constant is epsilon r150 DEG C at 100 kHz. The dielectric loss tan [delta] 150 DEG C is equal to 1065.39, the dielectric loss tan [delta] 150 DEG C is equal to 0.01472, and within the temperature range of 68-371 DEG C, the capacitance-temperature change rate meets the condition that TCC150 DEG C is smaller than or equal to +/-15%, the breakdown strength is 250 kV/cm, the maximum polarization intensity is 33 C/cm < 2 >, the effective energy storage density is 3.05 J/cm < 3 >, and the energy storage efficiency can reach 75.9%.
本发明公开了一种高铁电稳定性兼具温度稳定性的钛酸铋钠基无铅储能陶瓷材料及其制备方法，该陶瓷材料的结构通式为(1‑x)(0.85Bi0.5Na0.5TiO3‑0.15NaNbO3)‑xSrHfO3，其中x的取值为0.04～0.15。该陶瓷材料通过配料、球磨、预烧、二次球磨、过筛、压片、烧结制备而成，制备方法简单、成本低廉、重复性好、成品率高，所得陶瓷材料具有高的铁电稳定性(循环稳定性和频率稳定性)、良好的温度稳定性和储能特性，其中x＝0.10时，在100kHz下介电常数为εr150℃,100kHz＝1065.39、介电损耗tanδ150℃,100kHz＝0.01472，在68～371℃的温度范围内，容温变化率满足TCC150℃≤±15％，击穿强度为250kV/cm，最大极化强度为33C/cm2，效储能密度为3.05J/cm3，储能效率可达75.9％。
Sodium bismuth titanate-based lead-free energy storage ceramic material with high ferroelectric stability and temperature stability and preparation method of sodium bismuth titanate-based lead-free energy storage ceramic material
The invention discloses a sodium bismuth titanate-based lead-free energy storage ceramic material with high ferroelectric stability and temperature stability and a preparation method thereof, the structural general formula of the ceramic material is (1-x) (0.85 Bi < 0.5 > Na < 0.5 > TiO < 3-0.15 > NaNbO < 3 >)-xSrHfO < 3 >, and the value of x is 0.04-0.15. The ceramic material is prepared through proportioning, ball milling, pre-sintering, secondary ball milling, sieving, tabletting and sintering, the preparation method is simple, the cost is low, the repeatability is good, the yield is high, the obtained ceramic material has high ferroelectric stability (cycle stability and frequency stability), good temperature stability and good energy storage characteristic, when x is equal to 0.10, the dielectric constant is epsilon r150 DEG C at 100 kHz, and the dielectric constant is epsilon r150 DEG C at 100 kHz. The dielectric loss tan [delta] 150 DEG C is equal to 1065.39, the dielectric loss tan [delta] 150 DEG C is equal to 0.01472, and within the temperature range of 68-371 DEG C, the capacitance-temperature change rate meets the condition that TCC150 DEG C is smaller than or equal to +/-15%, the breakdown strength is 250 kV/cm, the maximum polarization intensity is 33 C/cm < 2 >, the effective energy storage density is 3.05 J/cm < 3 >, and the energy storage efficiency can reach 75.9%.
本发明公开了一种高铁电稳定性兼具温度稳定性的钛酸铋钠基无铅储能陶瓷材料及其制备方法，该陶瓷材料的结构通式为(1‑x)(0.85Bi0.5Na0.5TiO3‑0.15NaNbO3)‑xSrHfO3，其中x的取值为0.04～0.15。该陶瓷材料通过配料、球磨、预烧、二次球磨、过筛、压片、烧结制备而成，制备方法简单、成本低廉、重复性好、成品率高，所得陶瓷材料具有高的铁电稳定性(循环稳定性和频率稳定性)、良好的温度稳定性和储能特性，其中x＝0.10时，在100kHz下介电常数为εr150℃,100kHz＝1065.39、介电损耗tanδ150℃,100kHz＝0.01472，在68～371℃的温度范围内，容温变化率满足TCC150℃≤±15％，击穿强度为250kV/cm，最大极化强度为33C/cm2，效储能密度为3.05J/cm3，储能效率可达75.9％。
Sodium bismuth titanate-based lead-free energy storage ceramic material with high ferroelectric stability and temperature stability and preparation method of sodium bismuth titanate-based lead-free energy storage ceramic material
高铁电稳定性兼具温度稳定性的钛酸铋钠基无铅储能陶瓷材料及其制备方法
YANG ZUPEI (Autor:in) / JIANG MINGJIA (Autor:in) / PENG ZHANHUI (Autor:in) / CHAO XIAOLIAN (Autor:in)
12.01.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2024