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| Energy Storage Properties of SrTiO3 Doped 0.75Bi0.5Na0.5TiO3 - 0.25Ba0.85Ca0.15Zr0.9O3 Ceramics |
| DUAN Longxiao1,HA0 Jiaxi1,HAN Dandan1*,WANG Changhao2
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| (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 ) |
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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.
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Published: 05 July 2025
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