一种改性钛酸铋钠-钛酸钡基陶瓷材料及制备方法、应用
By modifying sodium bismuth titanate-barium titanate-based ceramics with the high entropy effect, the problems of low breakdown strength and low energy storage efficiency of sodium bismuth titanate-barium titanate-based energy storage ceramics were solved, achieving the effects of high breakdown strength and high energy storage density.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JILIN UNIVERSITY
- Filing Date
- 2024-09-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sodium bismuth titanate-barium titanate-based energy storage ceramics have low breakdown strength and energy storage efficiency, making it difficult to meet the miniaturization requirements of electronic products.
By utilizing the high entropy effect of multiple elements entering the same lattice position, an energy storage ceramic with the chemical formula (1-x)(Na0.5Bi0.5)1-yBayTiO3-xLa(Mg2/5Al2/5Ta1/5)O3 was prepared through solid-state reaction and sintering. The perovskite structure was modified by BaTiO3-La(Mg2/5Al2/5Ta1/5) composite ions to enhance the temperature stability and energy storage efficiency of the material.
The breakdown strength and energy storage density of the ceramic material were improved, with a breakdown strength of 255 kV/cm, an effective energy storage density of 5.1 J/cm3, and an energy storage efficiency of 92%.
Smart Images
Figure CN119118659B_ABST