针对脉冲功率小型化、高功率化对储能电介质高储能密度、高绝缘性能以及良好稳定性等要求，本项目以稀土掺杂SrTiO3介质陶瓷为对象，分析稀土掺杂对电介质的微观结构、介电性能的影响，并通过设定不同模型组成、结构剖析影响介电性能的物理机制。围绕其不同层次结构（晶构、纳/微结构、显微结构等），通过理论分析与实验测试，尝试建立稀土掺杂SrTiO3陶瓷不同层次结构与介电常数、耐压强度等介电性能的关系，探索外场（电场、温度场）作用下稀土掺杂SrTiO3电介质陶瓷介电性能变化的影响因素和物理机制。通过微观结构设计（包括纳米包覆、"核－壳"结构等）提高稀土掺杂SrTiO3介质陶瓷的耐压强度，建立相应的制备方法，获得综合性能优良的储能介质材料。本项目成果对开发新型高性能储能介质材料有重要指导意义，为脉冲功率技术发展提供重要的材料技术支撑。

High energy density,high insulation performance and fine stability dielectrics are being actively investigated to address the needs of miniaturization, high power pulse power component. In this project, rare-earth doped SrTiO3 dielectric materials will be designed and investigated to analysize the influence of rare-doping on the microstructure and dielectric properties of materials. The physical mechanism will be studied by designing the composition and the structure.Theoretical calculations of the intrinsic properties of the materials will be integrated with the experimental synthesis and property characterization in-depth understanding of the relationship between the structure(lattice structure, nano/micro structrue etc) and the dielectric behavior(dielectric constant,breakdown strength etc.).By changing the external field(temperature and electrical),the influence factors and mechanism of dielectric properties of rare earth doped SrTiO3 will be investigated. Improved breakdown strength are expected by microstructure design(nano-coating,core-shell structure etc.).Based on that,processing will be optimized to produce dielectrics with excellent comprehensive performance.The achievement in this project will have significant influence on the high property energy storage dielectrics and supply the effective material support for pulse power technology.