0.4Sr 0.6TiO 3 lead-free ceramics with Bi 2O 3-B 2O 3-SiO 2 glass addition]]>

摘要

AbstractIn this study, we present an effective strategy to enhance the energy storage properties of Ba0.4Sr0.6TiO3(BST) lead-free ceramics by the addition of Bi2O3-B2O3-SiO2(BBS) glass, which were prepared by the conventional solid state sintering method. The phase structure, microstructure and energy storage properties were investigated in detail. It can be found that the Ba0.4Sr0.6TiO3-x wt%(Bi2O3-B2O3-SiO2) (BST- x wt%BBS, 0≤x≤12) ceramics possess large maximum polarization (Pmax), low remanent polarization (Pr) and slim polarization electric field (P-E) hysteresis loops. The breakdown strength (BDS), recoverable energy storage density (Wrec) and energy storage efficiency (η) are enhanced obviously with the addition of BBS glass. The BST-9 wt%BBS ceramic is found to exhibit excellent energy storage properties with aWrecof 1.98J/cm3and aηof 90.57% at 279kV/cm. These results indicate that the BST-x wt%BBS ceramics might be good candidates for high energy storage applications.]]>