Multilayer ceramic capacitors in energy-storage applications have received increasing attention due to the advantages of high power density, low drive voltage and fast charge/discharge rates. However, the low energy density is a great challenge which limits the applications of multilayer ceramic capacitors. Here, an antiferroelectric Pb_0.98La_0.02(Zr_xSn_1−x)_0.995O₃ (PLZS) system is investigated and the corresponding multilayer ceramic capacitors with Pt inner electrodes are prepared. A record-high energy-storage density of 12.6 J cm⁻³ and a high energy efficiency of 80% are achieved in Pb_0.98La_0.02(Zr_0.7Sn_0.3)_0.995O₃ multilayer ceramic capacitors, which consist of five dielectric layers with a single-layer thickness of 20 μm. Furthermore, the newly developed capacitors also exhibit a wide temperature usage range of 25 to 120 °C and strong fatigue endurance after 10⁶ cycles. These results suggest that the Pb_0.98La_0.02(Zr_0.7Sn_0.3)_0.995O₃ multilayer ceramic capacitors will be potential candidates for next-generation pulsed power capacitors.

中文翻译：

---

PLZS反铁电多层陶瓷电容器的高储能性能

储能应用中的多层陶瓷电容器由于具有高功率密度，低驱动电压和快速充电/放电速率的优势而受到越来越多的关注。但是，低能量密度是一个巨大的挑战，这限制了多层陶瓷电容器的应用。在此，研究了反铁电Pb _0.98 La _0.02（Zr _x Sn _{1- x}）_0.995 O ₃（PLZS）系统，并制备了相应的带有Pt内电极的多层陶瓷电容器。在Pb _0.98 La _0.02中达到了创纪录的12.6 J cm ^-3的高储能密度和80％的高能效（Zr _0.7 Sn _0.3）_0.995 O ₃多层陶瓷电容器，由五个介电层组成，单层厚度为20μm。此外，新开发的电容器还具有25至120°C的宽温度使用范围，并且经过10 ⁶个循环后仍具有很强的耐疲劳性。这些结果表明，Pb _0.98 La _0.02（Zr _0.7 Sn _0.3）_0.995 O ₃多层陶瓷电容器将成为下一代脉冲功率电容器的潜在候选者。