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Silver niobate-based anti-ferroelectric ceramic with high energy storage density under low electric field and preparation method of silver niobate-based anti-ferroelectric ceramic
The invention discloses a silver niobate-based anti-ferroelectric ceramic with high energy storage density under a low electric field and a preparation method thereof, and belongs to the technical field of dielectric energy storage ceramic materials, A-site Bi < 3 + >/Ca < 2 + > composite modified silver niobate-based anti-ferroelectric ceramic is synthesized by adopting a solid-phase reaction method, and the chemical general formula of the ceramic is Ag (1-5x) Bi < x > Ca < x > NbO3, 0lt, xlt; and 0.02, 5x/2mol of Ag2O and x/2mol of Bi2O3 are additionally added during powder blending. Silver niobate antiferroelectric ceramic is modified through A-site Bi < 3 + >/Ca < 2 + > co-doping, M2a and M2b phases with antiferroelectric structures are stabilized to room temperature, the saturation polarization Dm and the dielectric breakdown strength are enhanced, the forward reversal electric field EF and the reverse reversal electric field EB are improved, the difference value between the EF and the EB is effectively reduced, the energy storage performance is greatly improved, and the energy storage performance is greatly improved. Under the low electric field of 205 kV/cm, the effective energy density as high as 4.4 J/cm < 3 > and the energy storage efficiency of 63% can be obtained.
本发明公开了一种低电场下具有高储能密度的铌酸银基反铁电陶瓷及其制备方法，属于电介质储能陶瓷材料技术领域，采用固相反应法合成A位Bi3+/Ca2+复合改性的铌酸银基反铁电陶瓷，其化学通式为Ag(1‑5x)BixCaxNbO3，0
Silver niobate-based anti-ferroelectric ceramic with high energy storage density under low electric field and preparation method of silver niobate-based anti-ferroelectric ceramic
The invention discloses a silver niobate-based anti-ferroelectric ceramic with high energy storage density under a low electric field and a preparation method thereof, and belongs to the technical field of dielectric energy storage ceramic materials, A-site Bi < 3 + >/Ca < 2 + > composite modified silver niobate-based anti-ferroelectric ceramic is synthesized by adopting a solid-phase reaction method, and the chemical general formula of the ceramic is Ag (1-5x) Bi < x > Ca < x > NbO3, 0lt, xlt; and 0.02, 5x/2mol of Ag2O and x/2mol of Bi2O3 are additionally added during powder blending. Silver niobate antiferroelectric ceramic is modified through A-site Bi < 3 + >/Ca < 2 + > co-doping, M2a and M2b phases with antiferroelectric structures are stabilized to room temperature, the saturation polarization Dm and the dielectric breakdown strength are enhanced, the forward reversal electric field EF and the reverse reversal electric field EB are improved, the difference value between the EF and the EB is effectively reduced, the energy storage performance is greatly improved, and the energy storage performance is greatly improved. Under the low electric field of 205 kV/cm, the effective energy density as high as 4.4 J/cm < 3 > and the energy storage efficiency of 63% can be obtained.
本发明公开了一种低电场下具有高储能密度的铌酸银基反铁电陶瓷及其制备方法，属于电介质储能陶瓷材料技术领域，采用固相反应法合成A位Bi3+/Ca2+复合改性的铌酸银基反铁电陶瓷，其化学通式为Ag(1‑5x)BixCaxNbO3，0
Silver niobate-based anti-ferroelectric ceramic with high energy storage density under low electric field and preparation method of silver niobate-based anti-ferroelectric ceramic
一种低电场下具有高储能密度的铌酸银基反铁电陶瓷及其制备方法
YAN ZHONGNA (author) / HE JIA (author) / PENG HAOJIE (author) / CHEN HAIYAN (author) / LI CHUANCHANG (author)
2024-11-29
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
| European Patent Office | 2023
| European Patent Office | 2024
| European Patent Office | 2024