Enhanced energy storage and fast discharge properties of BaTiO3-Bi(Ni0.5Zr0.5)O3 ceramics modified by (Bi0.5Na0.5)0.7Sr0.3TiO3

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[0.9BaTiO(3) -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/cm(3) and eta = 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 mu s. In addition, the developed ceramic has good frequency stability (1-120 Hz) and high temperature stability (40-160 degrees C). This excellent energy storage performance indicates that the ceramic is a suitable candidate for pulse power devices.