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High-temperature stable sodium bismuth titanate-based energy storage capacitor material and preparation method thereof
The invention discloses a high-temperature stable sodium bismuth titanate-based energy storage capacitor material and a preparation method thereof. The chemical composition of the capacitor material is (1-x) (0.98 (0.94 (Bi0. 5Na0. 5) TiO3-0. 06BaTiO3)-0.02 Sr0. 8Na0. 4Nb2O6)-xNaNbO3, and x is equal to 0.15. The preparation process of the capacitor material comprises the steps of firstly, drying original powder, and then weighing the original powder according to the molar ratio of atoms in the molecular formula of the material; and performing primary ball milling on the original material, pre-sintering, performing secondary ball milling, performing isostatic compaction, and finally sintering in a high-temperature furnace in an air atmosphere. The sodium bismuth titanate-based energy storage capacitor material with high temperature stability is prepared, and the energy storage density and the energy storage efficiency at room temperature are 1.67 J/cm < 3 > and 78% respectively. In addition, the material has good energy storage temperature stability at high temperature. Compared with the energy storage stability of similar capacitor ceramics in a temperature range from room temperature to 160 DEG C, the energy storage performance of the ceramic has obvious advantages.
本发明公开了一种高温稳定钛酸铋钠基储能电容材料及其制备方法，电容材料的化学组成为(1‑x)(0.98(0.94(Bi0.5Na0.5)TiO3‑0.06BaTiO3)‑0.02Sr0.8Na0.4Nb2O6)‑xNaNbO3，其中x＝0.15；电容材料的制备过程为先对原始粉料进行烘干处理，接着按照材料分子式中原子的摩尔比称取原始粉料；然后对原始材料进行一次球磨后进行预烧，接着二次球磨后等静压成型，最后在高温炉空气气氛中烧结。本发明制备出具有高温度稳定性的钛酸铋钠基储能电容器材料，在室温下的储能密度和储能效率分别为1.67J/cm3和78％。而且，在高温下具有良好的储能温度稳定性。与同类电容陶瓷在室温到160℃温度范围内的储能稳定性相比，陶瓷储能性能具有明显的优势。
High-temperature stable sodium bismuth titanate-based energy storage capacitor material and preparation method thereof
The invention discloses a high-temperature stable sodium bismuth titanate-based energy storage capacitor material and a preparation method thereof. The chemical composition of the capacitor material is (1-x) (0.98 (0.94 (Bi0. 5Na0. 5) TiO3-0. 06BaTiO3)-0.02 Sr0. 8Na0. 4Nb2O6)-xNaNbO3, and x is equal to 0.15. The preparation process of the capacitor material comprises the steps of firstly, drying original powder, and then weighing the original powder according to the molar ratio of atoms in the molecular formula of the material; and performing primary ball milling on the original material, pre-sintering, performing secondary ball milling, performing isostatic compaction, and finally sintering in a high-temperature furnace in an air atmosphere. The sodium bismuth titanate-based energy storage capacitor material with high temperature stability is prepared, and the energy storage density and the energy storage efficiency at room temperature are 1.67 J/cm < 3 > and 78% respectively. In addition, the material has good energy storage temperature stability at high temperature. Compared with the energy storage stability of similar capacitor ceramics in a temperature range from room temperature to 160 DEG C, the energy storage performance of the ceramic has obvious advantages.
本发明公开了一种高温稳定钛酸铋钠基储能电容材料及其制备方法，电容材料的化学组成为(1‑x)(0.98(0.94(Bi0.5Na0.5)TiO3‑0.06BaTiO3)‑0.02Sr0.8Na0.4Nb2O6)‑xNaNbO3，其中x＝0.15；电容材料的制备过程为先对原始粉料进行烘干处理，接着按照材料分子式中原子的摩尔比称取原始粉料；然后对原始材料进行一次球磨后进行预烧，接着二次球磨后等静压成型，最后在高温炉空气气氛中烧结。本发明制备出具有高温度稳定性的钛酸铋钠基储能电容器材料，在室温下的储能密度和储能效率分别为1.67J/cm3和78％。而且，在高温下具有良好的储能温度稳定性。与同类电容陶瓷在室温到160℃温度范围内的储能稳定性相比，陶瓷储能性能具有明显的优势。
High-temperature stable sodium bismuth titanate-based energy storage capacitor material and preparation method thereof
一种高温稳定钛酸铋钠基储能电容材料及其制备方法
WAN YUHUI (author) / HOU NINGJING (author) / REN PENGRONG (author) / YAN FUXUE (author) / ZHAO GAOYANG (author)
2021-07-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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