Enhanced energy storage properties of Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics doped with BiFeO3.

The structure and electrical properties of Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 -xBiFeO 3 ceramics (x = 0 %, 3 %, 8 % and 15 %) were investigated. The prepared samples show perovskite structure, and there is no detected second phase. The grain size of all ceramic samples doped with BiFeO 3 is significantly reduced. The doped samples have obvious relaxation characteristics, showing obvious dispersion phase transition and frequency dispersion. The P-E curve becomes thin with the increase of doping amount, but it changes reversely under higher doping content. For sample with the doping amount of 8 %, a thin and long hysteresis loop is observed, and the sample has the best energy storage characteristics with the energy storage density of 0.57 J/cm3 and the energy storage efficiency of 91.3 %. This study provides a method to improve the energy storage density and efficiency of BCZT ceramics. • The prepared samples show perovskite structure, and there is no detected second phase. • Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 -8 %BiFeO 3 has the energy storage density of 0.57 J/cm3. • Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 -8 %BiFeO 3 has the energy storage efficiency of 91.3 %. • This study provides a method to improve the energy storage performance of BCZT ceramics. [ABSTRACT FROM AUTHOR]