Abstract
Morphotropic phase (MPB) eco-friendly ferroelectric 0.94Bi0.5Na0.5TiO3- 0.06BaTiO3 (NBT-BT) ceramics exhibits superior piezoelectric performances. However, the large remnant polarization (Pr) and low breakdown strength (Eb) of NBT-BT systems hinders application in energy storage capacitors. Herein, the Bi(Zn1/3Nb2/3)O3 (BZN) is selected to partially replace the NBT-BT ceramics to break ferroelectric long-range order domains achieving higher energy storage properties. Highly recoverable energy storage density (Wrec ~ 3 J/cm3) and efficiency (η ~ 75%) are acquired in (NBT-BT)-0.06BZN ceramics under a low applied electric field of 210 kV/cm. Furthermore, superior temperature stability (20–120 °C), and frequency (1–1000 Hz) stability, and fatigue endurance (105 st) are also gained. These advantages further suggest that the (NBT-BT)-0.06BZN ceramics exhibit great promise in pulsed power markets.
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