Dielectric-temperature stability and breakdown strength of the Nb-doped 0.12BiAlO3-0.88BaTiO3 ceramics with B–Al–Si glass additive

BS 0.5BNT-based relaxor ferroelectric ceramic/glass–ceramic composites for energy storage

“…2(h)), and the large difference in the dielectric constant between glass and the main BS0.5BNT crystal phase will cause a rapid decrease of maximum dielectric constant. On the other hand, when GS adding content goes high, the uniform core-shell structure is gradually formed and the submicrocrystals/nanocrystals with a similar composition to the main BS0.5BNT crystal phase are generated from the glass, resulting in the increase of the dielectric constant of glass, so that the decrease in the dielectric constant of BS0.5BNT-xGS ceramic composites is no longer obvious [32,38]. It should be noted that the peak value of the dielectric constant further decreases when x=18, which should be due to the increment of impurity phases produced from glass crystallization.…”

“…Many improvement strategies, e.g., glass modification, design of core-shell structure or multilayer structure, two-step sintering and a combination of these methods are usually used to improve the electrical breakdown strength of dielectric ceramics [24,[26][27][28][29][30][31]. Among them, glass modification is a relatively common and simple method, which can reduce the porosity and grain size, thereby increase the energy storage density by improving the electrical breakdown strength [32][33][34][35][36][37][38]. For example, Liu et al [32] obtained a composite material with an uneven core-shell structure in Nb-doped 0.12BiAlO3-0.88BaTiO3 ceramics through B-Al-Si glass addition, of which the average breakdown strength improved by 71%.…”

“…Among them, glass modification is a relatively common and simple method, which can reduce the porosity and grain size, thereby increase the energy storage density by improving the electrical breakdown strength [32][33][34][35][36][37][38]. For example, Liu et al [32] obtained a composite material with an uneven core-shell structure in Nb-doped 0.12BiAlO3-0.88BaTiO3 ceramics through B-Al-Si glass addition, of which the average breakdown strength improved by 71%. Wu et al [38] reported that the average electrical breakdown strength is increased by 80% in Ba0.4Sr0.6TiO3 ceramics modified by BaO-TiO2-SiO2 glass.…”

Dependence of Phase Structure and Discharge Performance on the Temperature of Perovskite Composited Ceramics

“…[13,14] Studies of SrTiO 3 mainly focus on the dielectric breakdown strength (BDS) and dielectric constant (ε). [15,16] The improvement of BDS and ε is the key to improving W rec and η. The performance of SrTiO 3 is usually changed by ions doping.…”