中文摘要：

作为电容储能器件的核心材料,高储能电介质在智能电网和高能武器等先进装备领域具有重要的实用价值。为提高聚合物电介质材料的储能密度,多采用复合技术制备聚合物基纳米复合电介质。首先介绍了现有聚合物基复合体系的基本理论及结构模型,并着重从介电常数、击穿场强和介电损耗3个关键技术指标入手总结了近年来取得的相关研究成果。最后,在此基础上对聚合物基纳米复合电介质材料目前存在的科学问题进行了探讨和展望。

英文摘要：

As the core material of capacitors, dielectrics with high energy storage capacity have extremely important ap- plication in advanced equipment of smart grid and high-energy weapons. In order to improve the energy density of polymer dielectrics, composite technology was usually used to fabricate polymer-based nanocomposite dielectrics. We in- troduced the basic theory and structure model of several composites, and summarized recent research achievements from three key factors, including dielectric constant, electrical breakdown strength, and energy loss. Moreover, we put forward discussions and prospection on the basis of above scientific issues .