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Sodium niobate-based lead-free ferroelectric ceramic material with energy storage and photovoltaic effects and preparation method of sodium niobate-based lead-free ferroelectric ceramic material
The invention discloses a sodium niobate-based lead-free ferroelectric ceramic material with energy storage and photovoltaic effects and a preparation method of the sodium niobate-based lead-free ferroelectric ceramic material, the general formula of the ceramic material is (1-x) NaNbO3-xLa (Mn0. 5Ni0. 5) O3, x represents the molar ratio of La (Mn0. 5Ni0. 5) O3 in the total mass, and the value of x is 0.05-0.2. The ceramic material is prepared through the process steps of burdening, pre-sintering, ball milling, tabletting, non-pressure closed sintering and the like. The preparation method is simple, good in repeatability and high in yield, the obtained ceramic material has a photovoltaic effect, high energy storage density and energy storage efficiency, high Curie temperature and dielectric breakdown strength and ultrafast charge and discharge speed, when the value of x is 0.05, the highest effective energy storage density and energy storage efficiency are 1.77 J/cm < 3 > and 77.5% respectively, the dielectric breakdown strength is 200kV/cm, and the charging and discharging speed t0.9 is less than 50ns; when the value of x is 0.2, the maximum short-circuit current density is obtained, Jsc is 60 nA/cm < 2 >, and at the moment, the open-circuit voltage Voc is 0.71 eV.
本发明公开了一种具有储能和光伏效应的铌酸钠基无铅铁电陶瓷材料及其制备方法，该陶瓷材料的通式为(1‑x)NaNbO3‑xLa(Mn0.5Ni0.5)O3，式中x代表La(Mn0.5Ni0.5)O3占总物质量的摩尔比，x的取值为0.05～0.2。该陶瓷材料通过配料、预烧、球磨、压片、无压密闭烧结等工艺步骤制备而成。本发明制备方法简单、重复性好、成品率高，所得陶瓷材料具有光伏效应，具有高的储能密度和储能效率、高居里温度和介电击穿强度、超快的充放电速度，其中x值取0.05时具有最高有效储能密度和储能效率，分别为1.77J/cm3和77.5％，介电击穿强度为200kV/cm、充放电速度t0.9小于50ns；x取值0.2时获得最大短路电流密度，Jsc为60nA/cm2，此时开路电压Voc为0.71eV。
Sodium niobate-based lead-free ferroelectric ceramic material with energy storage and photovoltaic effects and preparation method of sodium niobate-based lead-free ferroelectric ceramic material
The invention discloses a sodium niobate-based lead-free ferroelectric ceramic material with energy storage and photovoltaic effects and a preparation method of the sodium niobate-based lead-free ferroelectric ceramic material, the general formula of the ceramic material is (1-x) NaNbO3-xLa (Mn0. 5Ni0. 5) O3, x represents the molar ratio of La (Mn0. 5Ni0. 5) O3 in the total mass, and the value of x is 0.05-0.2. The ceramic material is prepared through the process steps of burdening, pre-sintering, ball milling, tabletting, non-pressure closed sintering and the like. The preparation method is simple, good in repeatability and high in yield, the obtained ceramic material has a photovoltaic effect, high energy storage density and energy storage efficiency, high Curie temperature and dielectric breakdown strength and ultrafast charge and discharge speed, when the value of x is 0.05, the highest effective energy storage density and energy storage efficiency are 1.77 J/cm < 3 > and 77.5% respectively, the dielectric breakdown strength is 200kV/cm, and the charging and discharging speed t0.9 is less than 50ns; when the value of x is 0.2, the maximum short-circuit current density is obtained, Jsc is 60 nA/cm < 2 >, and at the moment, the open-circuit voltage Voc is 0.71 eV.
本发明公开了一种具有储能和光伏效应的铌酸钠基无铅铁电陶瓷材料及其制备方法，该陶瓷材料的通式为(1‑x)NaNbO3‑xLa(Mn0.5Ni0.5)O3，式中x代表La(Mn0.5Ni0.5)O3占总物质量的摩尔比，x的取值为0.05～0.2。该陶瓷材料通过配料、预烧、球磨、压片、无压密闭烧结等工艺步骤制备而成。本发明制备方法简单、重复性好、成品率高，所得陶瓷材料具有光伏效应，具有高的储能密度和储能效率、高居里温度和介电击穿强度、超快的充放电速度，其中x值取0.05时具有最高有效储能密度和储能效率，分别为1.77J/cm3和77.5％，介电击穿强度为200kV/cm、充放电速度t0.9小于50ns；x取值0.2时获得最大短路电流密度，Jsc为60nA/cm2，此时开路电压Voc为0.71eV。
Sodium niobate-based lead-free ferroelectric ceramic material with energy storage and photovoltaic effects and preparation method of sodium niobate-based lead-free ferroelectric ceramic material
一种具有储能和光伏效应的铌酸钠基无铅铁电陶瓷材料及其制备方法
CHAO XIAOLIAN (Autor:in) / WANG JITONG (Autor:in) / YANG ZUPEI (Autor:in) / PENG ZHANHUI (Autor:in) / SHI QIANGQIANG (Autor:in)
02.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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