Mg0.85Bi0.1ZrO3掺杂(Bi0.5Na0.5)0.7Sr0.3TiO3陶瓷的能量存储性能

The performance of pulse power capacitors for energy storage has been elevated to a higher level with the dynamic development of the electronic component industry in recent years. This work improves the energy density and power density ( P D ) in the (Bi 0.5 Na 0.5 ) 0.7 Sr 0.3 TiO 3 (BNST) by introducing Mg 0.85 Bi 0.1 ZrO 3 (MBZ). The ceramic grain size was significantly reduced by the introduction of MBZ, and the breakdown electric field ( E b ) of the ceramics was also enhanced. The recoverable energy storage density ( W rec ) of 0.90BNST-0.10MBZ ceramics is 2.67 J/cm 3 at an electric field of 208 kV/cm, at which time the polarization difference reaches 39.52 μC/cm 2 with an energy storage efficiency ( η ) of 63.55%. Simultaneously, the 0.90BNST-0.10MBZ ceramics exhibit excellent electrical stability under test conditions ranging from 20 to 140 °C and 1 to 200 Hz. Furthermore, the 0.90BNST-0.10MBZ ceramics were found to exhibit a P D of 13.02 MW/cm 3 and a discharge time of 1.368 μs at an electric field of 160 kV/cm. These characteristics indicate that ceramics with 0.90BNST-0.10MBZ have a possible application in exceptionally powerful devices.