Low temperature sintering and energy storage properties of 0.8Ba0.2Sr0.8TiO3–0.2Bi(Mg0.5Zr0.5)O3 ceramic with additive of SrO–B2O3–ZnO glass

Glass additive SrO–B₂O₃–ZnO (SBZ) is used to decrease the sintering temperature of 0.8Ba_0.2Sr_0.8TiO₃–0.2Bi(Mg_0.5Zr_0.5)O₃ (BST-BMZ) ceramic and improve ceramic energy storage performance. The effects of glass content on the sintering temperature, crystal structure, microstructure, dielectric property, and energy storage performance of BST-BMZ ceramics are investigated. Benefiting from the good wetting behavior of SBZ glass melt and BST-BMZ ceramic, the addition of SBZ glass on the BST-BMZ matrix facilitates achievement of low temperature sintering process, and the sintering temperature reduces from 1300 ºC to 1100 ºC for BST-BMZ + 2 wt% SBZ ceramic. While, the decrease of average grain size and superior densification resulting from the low sintering temperature, are also beneficial to the high breakdown strength. The BST-BMZ + 2 wt% SBZ ceramic achieves the optimum comprehensive properties with the maximum energy storage density of 2.13 J/cm³ and the remarkable efficiency of 94.1%. The addition of SBZ glass reduces the sintering temperature of BST-BMZ ceramic and improves the energy storage performance. The results indicate that the BST-BMZ + 2 wt% SBZ ceramic is a potential dielectric material for multilayer ceramic capacitors.