Low temperature sintering lead‐free dielectric xBiScO₃‐(1‐x)BaTiO₃ for energy storage applications

Abstract

Fabrication of ceramic capacitors requires technological breakthroughs to address growing concerns regarding sustainability, cost, and increased power consumption in the manufacturing process. Low temperature sintered xBiScO 3 -(1-x)BaTiO 3 (BS-BT) with x = 0.4 is found to possess excellent energy storage performance and temperature stability. The grain size decreases from 3.5 μm sintered at 1100 C to less than 0.5 μm sintered at 800 C, leading to much improved breakdown field and energy storage properties. Recoverable energy density of 4.7 J/cm 3 with a high efficiency of 89% was obtained at an electric field of 390 kV/cm, showing an excellent temperature stability over temperature range of 25-200 C and fatigue endurance for more than 10 5 cycles. Of particular importance is that the ceramic tape cofired with silver

Achieving high energy density/efficiency in light-metal-element-rich relaxor ferroelectric ceramics by annihilating volatile Schottky defects

“…6(f). 9,12,14,15,21,28,[56][57][58][59][60][61][62] The results clearly show that the x = 4 ceramic is superior to other lead-free energy storage ceramics in terms of unit mass and lightweight capability. The pulsed charge-discharge performance is also crucial for practical dielectric energy storage applications, and relevant measurements are shown in Fig.…”