Antiferroelectric (AFE) ceramics are known for their rich field-induced phase transitions, which mainly contribute to their superior energy storage performance. However, the phase transitions instability caused by high temperature often limits its application scenarios. Developing AFE ceramics with high energy storage properties and wide application temperature ranges is challenging. Here, considering the B-site ordering characteristics of Pb(YbNb)O, we propose a simple approach for introducing A-site distortion and adjusting B-site ordering to confront these challenges. In our Fe/Srco-doping system, we realized an ultra-wide temperature range of 25–200 °C, within which the recoverable storage density was considerable: 8.48–13.39 J cm. In this interval, the discharge energy density could reach 6.15–9.67J cm, and the discharge current density and discharge power density were 755.09–1667.36 A cm and 207.65–500.21 MW cm, respectively. The obtained high-temperature energy storage performance was superior to that of existing energy storage ceramics or polymer films. The introduction of A-site distortion improves the stability of AFE phase, the decrease in B-site ordering suppresses the remanent polarization and delays change in structural symmetry with temperature. This study forms a basis for further applications of dielectric capacitors and signifies the development of wide-temperature-range energy storage devices.

中文翻译：

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PYN基反铁电陶瓷在超宽温度范围内具有优异的储能性能


反铁电（AFE）陶瓷以其丰富的场诱导相变而闻名，这主要有助于其优越的储能性能。然而，高温引起的相变不稳定性往往限制了其应用场景。开发具有高储能特性和宽应用温度范围的 AFE 陶瓷具有挑战性。在这里，考虑到 Pb(YbNb)O 的 B 位有序特性，我们提出了一种简单的方法来引入 A 位畸变并调整 B 位有序来应对这些挑战。在我们的Fe/Srco掺杂系统中，我们实现了25-200°C的超宽温度范围，在此范围内可恢复的存储密度相当大：8.48-13.39 J cm。在此区间，放电能量密度可达6.15~9.67J cm，放电电流密度和放电功率密度分别为755.09~1667.36 A cm和207.65~500.21 MW cm。所获得的高温储能性能优于现有的储能陶瓷或聚合物薄膜。 A位畸变的引入提高了AFE相的稳定性，B位有序度的降低抑制了剩余极化并延迟了结构对称性随温度的变化。这项研究为介电电容器的进一步应用奠定了基础，并标志着宽温度范围储能器件的发展。