Lead-free BaTiO3 (BT)-based multilayer ceramic capacitors (MLCCs) with the thickness of dielectric layers ~9 μm were successfully fabricated by tape-casting and screen-printing techniques. A single phase of the pseudo-cubic structure was revealed by X-ray diffraction. Backscattered images and energy-dispersive X-ray elemental mapping indicated the high quality of MLCCs without observation of interaction, wrapping, or delamination. The relaxor state was confirmed by transmission electron microscopy and temperature-dependent permittivity. Impedance spectroscopy at various temperatures revealed the electrical heterogeneous response for MLCCs with high-resistive electrical components. Improved energy storage performance was obtained by multilayering, comparing with the bulk ceramics. Enhanced recoverable energy density ~6.88 J/cm3 with high efficiency ~90% were realized under an electric field of 820 kV/cm, which is mainly attributed to the intrinsic high-resistivity and relaxor behavior. Furthermore, good temperature (20–85 °C) and frequency stabilities (0.5–50 Hz) were observed in the MLCCs, which are attractive for pulsed power applications.

无铅BaTiO 3通过流延和丝网印刷技术成功地制造了介电层厚度约为9μm的（BT）基多层陶瓷电容器（MLCC）。通过X射线衍射显示出伪立方结构的单相。反向散射图像和能量色散X射线元素图谱表明MLCC的质量很高，而没有观察到相互作用，包裹或分层。通过透射电子显微镜和温度依赖性介电常数确认弛豫状态。在各种温度下的阻抗谱揭示了具有高电阻电组件的MLCC的电异质响应。与块状陶瓷相比，通过多层化获得了改善的储能性能。增强的可回收能量密度〜6.88 J / cm 3在820 kV / cm的电场下实现了约90％的高效率，这主要归因于其固有的高电阻率和弛豫特性。此外，在MLCC中观察到良好的温度（20–85°C）和频率稳定性（0.5–50 Hz），这对于脉冲功率应用很有吸引力。