K1/2Bi1/2TiO3-based binary lead-free ceramic material with high dielectric energy storage performance

• Main Authors: CHANG ZILIANG, ZHENG MUPENG, LI YEXIN, ZHU MANKANG, HOU YUDONG
• Format: Patent
• Language: Chinese; English
• Published: 20.10.2023
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTRICITY; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a K1/2Bi1/2TiO3-based binary lead-free ceramic material with high dielectric energy storage performance, and belongs to the technical field of functional ceramic materials. The binary system lead-free ferroelectric ceramic of (1-x) K1/2Bi1/2TiO3-xBi0. 85Nd0. 15FeO3 is prepared by a traditional solid phase method, wherein x is more than or equal to 0.06 and less than or equal to 0.15. The introduced Bi < 0.85 > Nd < 0.15 > FeO < 3 > regulates and controls the phase structure and the microscopic local structure of KBT, has high energy storage density, high efficiency and high temperature stability, and has a good application prospect in the field of high-power pulse power systems. 一种高介电储能性能的K1/2Bi1/2TiO3基二元无铅陶瓷材料，属于功能陶瓷材料技术领域。通过传统固相法制备了(1-x)K1/2Bi1/2TiO3-xBi0.85Nd0.15FeO3的二元系无铅铁电陶瓷，其中0.06≤x≤0.15。引入的Bi0.85Nd0.15FeO3对KBT的相结构和微观局域结构进行调控，具有高储能密度、高效率和高温度稳定性，在大功率脉冲动力系统领域具有良好的应用前景。