Advances in flexible electronics are driving dielectric capacitors with high energy storage density toward flexibility and miniaturization. In the present work, an all-inorganic thin film dielectric capacitor with the coexistence of ferroelectric (FE) and antiferroelectric (AFE) phases based on Pb_0.96La_0.04(Zr_0.95Ti_0.05)O₃ (PLZT) was prepared on a 2D fluorophlogopite mica substrate via a simple one-step process. The flexible capacitor exhibits a high recoverable energy density (U_rec) of ≈ 44.2 J/cm³, a large electric breakdown strength (E_BDS) of 3011 kV/cm, excellent frequency stability (500 Hz-20 kHz) and high thermal stability over 30–190 °C. It also demonstrates an outstanding bending endurance, which can maintain a high energy storage performance under various bending radii (R = 2–10 mm) or 10³ repeated bends at 4 mm. The FE phase is stable near the film surface and the interface with the bottom electrode. The AFE phase with multi-domains has incommensurate modulation structures with super-periodicity of 6.5, 6.9 and 5.2. It indicates that the PLZT/LNO/F-Mica capacitor has high potential for energy storage application and may provide great opportunities for exploring new energy storage materials.

柔性电子技术的进步正在推动具有高储能密度的介电电容器向柔性和小型化方向发展。在目前的工作中，基于 Pb _0.96 La _0.04 (Zr _0.95 Ti _0.05 )O ₃ (PLZT) 的铁电 (FE) 和反铁电 (AFE) 相共存的全无机薄膜介电电容器是在二维荧光金云母上制备的。云母基板通过一个简单的一步工艺。柔性电容器具有≈ 44.2 J/cm ³的高可恢复能量密度 (U _rec ) 、大的电击穿强度 (E _BDS) 的 3011 kV/cm、出色的频率稳定性 (500 Hz-20 kHz) 和超过 30–190 °C 的高热稳定性。^{它还表现出出色的弯曲耐久性，可在各种弯曲半径（R = 2-10 mm）或10 3} 4 mm重复弯曲下保持高储能性能。FE 相在薄膜表面和与底部电极的界面附近是稳定的。具有多域的 AFE 相位具有不相称的调制结构，具有 6.5、6.9 和 5.2 的超周期性。这表明PLZT/LNO/F-Mica电容器具有很高的储能应用潜力，可能为探索新型储能材料提供巨大机遇。