Journal of Advanced Dielectrics, Volume. 13, Issue 1, 2242009(2023)
A novel Sr5BiTi3Nb7O tungsten bronze ceramic with high energy density and efficiency for dielectric capacitor applications
Xiangting Zheng1, Wentao Zhong1, Peng Zheng1、*, Wangfeng Bai2, Chong Luo2, Liang Zheng1, and Yang Zhang1
Author Affiliations
1Lab for Nanoelectronics and NanoDevices, Department of Electronics Science and Technology, Hangzhou Dianzi University, Hangzhou 310018, P. R. China2College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, P. R. Chinashow less
Dielectric capacitors with high capacitive energy storage are urgently needed to meet the growing demand for high-performance energy storage devices. Herein, a novel lead-free Sr5BiTi3Nb7O (SBTN) tungsten bronze relaxor ferroelectric ceramic is prepared and explored for potential energy storage applications. A high recoverable energy density ( 3.72 J/cm3) and ultrahigh efficiency ( 94.2%) at 380 kV/cm are achieved simultaneously. Both and exhibit superior stabilities against temperature (30–140C), cycles (100 –105) and frequency (1–500 Hz). In addition, a high current density of 796 A/cm2 and a large power density of 71.7 MW/cm3 are achieved, together with good thermal endurance and fatigue resistance. These results demonstrate that the obtained SBTN ceramic can be deemed as the promising candidates for dielectric capacitor applications.Dielectric capacitors with high capacitive energy storage are urgently needed to meet the growing demand for high-performance energy storage devices. Herein, a novel lead-free Sr5BiTi3Nb7O (SBTN) tungsten bronze relaxor ferroelectric ceramic is prepared and explored for potential energy storage applications. A high recoverable energy density ( 3.72 J/cm3) and ultrahigh efficiency ( 94.2%) at 380 kV/cm are achieved simultaneously. Both and exhibit superior stabilities against temperature (30–140C), cycles (100 –105) and frequency (1–500 Hz). In addition, a high current density of 796 A/cm2 and a large power density of 71.7 MW/cm3 are achieved, together with good thermal endurance and fatigue resistance. These results demonstrate that the obtained SBTN ceramic can be deemed as the promising candidates for dielectric capacitor applications.