Abstract
ABSTRACT Relaxed ferroelectric ceramics with good energy storage stability, high energy storage density and efficiency, and high charge/discharge rates have shown great potential for commercial applications. In this paper, 0.85[0.9BaTiO3 −0.1Bi(Ni0.5Zr0.5)O3]−0.15(Bi0.5Na0.5)0.7Sr0.3TiO3 ceramic was prepared via a solid – phase reaction method by doping (Bi0.5Na0.5)0.7Sr0.3TiO3 into 0.9BaTiO3 > −0.1Bi(Ni0.5Zr0.5)O3; it exhibited excellent energy storage performance values: Wrec = 2.87 J/cm3 and η = 88.10%. Charging and discharging tests were conducted to evaluate the feasibility of the ceramic for practical applications in energy – storage devices; it displayed an ultrafast discharge rate of 1.16 μs. In addition, the developed ceramic has good frequency stability (1–120 Hz) and high temperature stability (40–160°C). This excellent energy storage performance indicates that the ceramic is a suitable candidate for pulse power devices.
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