一种兼具高退极化温度和大压电性能的压电能量收集陶瓷材料及制备
By introducing Bi(Zn1/2Ti1/2)O3 units into the BS-PT matrix, the lattice distortion and phase boundary design are improved, solving the depolarization problem of piezoelectric ceramic materials at high temperatures, realizing efficient piezoelectric energy harvesting, and meeting the self-powered requirements of high-temperature wireless sensors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING UNIV OF TECH
- Filing Date
- 2024-06-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing piezoelectric ceramic materials suffer from severe depolarization at high temperatures, leading to deterioration of piezoelectric performance and making it difficult to meet the long-term self-power supply requirements of high-temperature wireless sensors.
By introducing Bi(Zn1/2Ti1/2)O3 units into the BS-PT matrix to enhance the perovskite lattice distortion, and by using the multiple quasi-isomorphic phase boundary design theory to improve the depolarization temperature and piezoelectric properties, zBiScO3-xPbTiO3-yBi(Zn1/2Ti1/2)O3 ternary high-temperature piezoelectric ceramic materials were prepared.
Piezoelectric ceramic materials with high depolarization temperature and large piezoelectric properties can generate electricity effectively at a high temperature of 400℃, meeting the long-term power supply requirements of high-temperature wireless sensors.
Smart Images
Figure BDA0004879525000000061 
Figure HDA0004879525010000011 
Figure HDA0004879525010000012