Antiferroelectric Pb_0.97La_0.02(Zr_0.33Sn_0.55Ti_0.12)O₃@SiO₂ (with 5% mole of SiO₂) particles were synthesized by a citric acid sol-gel method. Transmission electron microscopy(TEM) results illustrated the formation of core–shell nanostructures with controllable shell thicknesses about 3–5 nm. X-ray diffraction(XRD) patterns displayed that a stable perovskite phase was preserved and no other crystallization peaks were discovered from the shell component. Scanning electron microscopy(SEM) and Energy Dispersive Spectrometer(EDS) investigations confirmed that core-shell structures were inherited from particles to ceramics after sintering. As a result, through the coating process, the breakdown strength of the ceramic increases by 95% from 12.2 kV/mm to 23.8 kV/mm and the recoverable energy density was greatly enhanced from 1.76 J/cm³ to 2.68 J/cm³. These results demonstrate a promising reaction method to enhance breakdown strength in antiferroelectrics for energy storage capacitor applications.

反铁电Pb _0.97 La _0.02（Zr _0.33 Sn _0.55 Ti _0.12）O ₃ @SiO ₂（含5％的SiO ₂）颗粒是通过柠檬酸溶胶-凝胶法合成的。透射电子显微镜（TEM）的结果说明了可控壳厚度约为3-5 nm的核-壳纳米结构的形成。X射线衍射（XRD）图谱表明，钙钛矿相被保留下来，没有发现其他结晶峰。扫描电子显微镜（SEM）和能谱仪（EDS）的研究证实，烧结后，核-壳结构从颗粒向陶瓷继承。结果，通过涂覆过程，陶瓷的击穿强度从12.2 kV / mm增加到23.8 kV / mm，提高了95％，可恢复的能量密度从1.76 J / cm ³大大提高到2.68 J / cm ³。这些结果证明了一种有前途的反应方法，可以提高储能电容器应用中反铁电材料的击穿强度。