428 / 2019-03-14 10:11:05

Enhanced Breakdown Strength By Ion Substitution In Lead-free BaTi0.895Sn0.105O3–based Ceramics

breakdown strength, efficiency, conventional solid state reaction method, perovskite structure, energy storage density

全体主题 > Power Electronics

A lead-free (1-x)BaTi0.895Sn0.105O3-xBi(Mg0.5Zr0.5)O3 (BTS-BMZ) (x=0-0.2) ceramics were successfully synthesized via conventional solid-state reaction method. X-ray diffraction (XRD) reveals a pure perovskite structure for all sintered samples. The results show that the BMZ addition could lower the sintering temperature of BTS-based ceramics. The slim polarization-electric field (P-E) hysteresis loops were observed in samples with increasing the BMZ content for lead-free BTS-BMZ ceramics. The dielectric breakdown strength of BTS-BMZ ceramics shows their maxima of 250KV/cm at x=0.2, and an energy density and efficiency of about 1.52J/cm3 and 89.5% are achieved. The energy storage density (Wrec) and efficiency (η) were significantly increased in the present work, and they might be promising candidates for high energy storage applications.