(1.School of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin Gity 132022, China;2.School ofScience ,Jilin Institute of Chemical Technology,Jilin City 132022 , China )
Abstract: With the highly integrated and diversified development of electronic components, dielectric ceramic capacitors have attracted wide attention due to their high power density, low cost, and high temperature resistance. In this work, we used a conventional solid-phase reaction to prepare (1 - x)(0.75Bi?.?Na?.?TiO? - 0.25Ba?.??Ca?.??Zr?.?Ti?.?O?) - xSrTiO? (abbreviated as 0.75BNT - 0.25BCZT - ST?, x = 0.05, 0.10, 0.15, and 0.20) lead-free energy storage ceramics to investigate the effect of SrTiO? (ST) doping on the crystal structure and energy storage properties of BNT - BCZT ceramics. The ceramic samples were sintered at a temperature of 1200 ℃ with a single-phase perovskite structure. The ST doping has a significant effect on the microstructure and relaxation properties of the BNT - BCZT ceramics, and the main reason for inducing ferroelectric - to - relaxed ferroelectric phase transition of the ceramics was the formation of polar nanoregions (PNRs). The high releasable energy density Wrec of 3.849 J/cm3 and energy storage efficiency η of 74.74% were obtained for x = 0.15 samples at the electric field strength of 380 kV/cm, the good energy storage performance indicates that this material has a promising application in the field of energy storage capacitors.
段龙晓, 郝加西, 韩丹丹, 王长昊. SrTiO3掺杂0.75Bi0.5Na0.5TiO3 - 0.25Ba0.85Ca0.15Zr0.9O3陶瓷的储能性能研究[J]. 吉林化工学院学报, 2025, 42(1): 23-27.
DUAN Longxiao, HA Jiaxi, HAN Dandan, WANG Changhao. Energy Storage Properties of SrTiO3 Doped 0.75Bi0.5Na0.5TiO3 - 0.25Ba0.85Ca0.15Zr0.9O3 Ceramics. Journal of Jilin Institute of Chemical Technology, 2025, 42(1): 23-27.