Effect of sintering temperature on phase transformation and energy storage properties of 0.95NaNbO₃–0.05Bi(Zn0.5Zr0.5)O₃ ceramics

Dielectric materials with excellent energy storage performance are crucial to the development of renewable energy. In this work, we prepared 0.95NaNbO 3 –0.05Bi(Zn[Formula: see text]Zr[Formula: see text])O 3 (0.95NN–0.05BZZ) ceramics using solid state sintering and investigated the effect of sintering temperature on phase structure. We find that the phase transformation of ceramics occurs with the change of sintering temperature. The cubic phase (Pm -3[Formula: see text]) and the antiferroelectric phase (Pbma) coexist at 1150[Formula: see text]C, the ferroelectric phase ([Formula: see text]21ma) appears at 1200[Formula: see text]C and its phase proportion decreases with the sintering temperature increasing from 1200[Formula: see text]C to 1280[Formula: see text]C. Finally, we achieve the high recoverable energy storage density ([Formula: see text]) 0.74 J/cm 3 and efficiency ([Formula: see text]) 71% (at 140 kV/cm) at 1150[Formula: see text]C.