Synthesis and temperature dependent energy storage characterization of (Bi1/2Na1/2)0.94Ba0.06TiO3)-Ba1/2Sr1/2TiO3 ceramics

Ferroelectric dense cceramic compositions of (1-x)((Bi1/2Na1/2)(0.94)Ba0.06TiO3)-xBa(1/2)Sr(1/2)TiO(3) (BNBT-BST), (0 <= x <= 0.1) were fabricated via sol-gel method. The phase, microstructural, dielectric, ferroelectric and temperature dependent properties were investigated in detail. The XRD revealed single phase perovskite structured Bi1/2Na1/2TiO3. The temperature dependent dielectric properties revealed two phase transitions in the fabricated samples. The Energy storage properties were obtained indirectly from the Polarization versus Electric field (P-E) loops at various temperature and electric field. The maximum values of the energy storage density (W) and energy storage efficiency (eta) of 0.57 J cm(-3) and 43% were obtained at 150 degrees C and 70 KV cm(-1) for x = 0.08 respectively. The energy storage densities were observed to increase with increase in temperature and electric field. The optimum composition of BNBT-BST can be a promising candidate for energy storage applications.

Automated summary

Ferroelectric dense ceramic compositions of (1-x)((Bi1/2Na1/2)(0.94)Ba0.06TiO3)-xBa(1/2)Sr(1/2)TiO(3) were fabricated via sol-gel method. The temperature dependent dielectric properties revealed two phase transitions in the samples. High energy storage density and efficiency were observed at specific temperature and electric field, making them promising for energy storage applications.