聚酰亚胺复合储能电介质材料研究进展

Progress of Polyimide-based Composite Dielectrics for Energy Storage Applications

具有高击穿、低损耗、高柔性、低成本等优点的介电高分子材料在薄膜电容器产业中发挥着重要作用。然而,偏低的储能密度以及较差的热稳定性限制了其在高温工作环境中的应用。本文着重介绍了以聚酰亚胺为基体的介质储能材料及提高储能特性的研究方法,包括具有高介电常数、高绝缘特性的无机填料,多功能复合填料的结构和形貌对复合薄膜性能的影响以及界面微区特性的研究,并探讨了高温介质储能复合材料界面设计的未来研究方向。

Dielectric polymer materials with high breakdown,low loss,high flexibility,and low cost play an important role in film capacitor industry.However,low energy storage density and poor thermal stability limit its applications in high-temperature working environments.In this paper,the polyimide-based dielectric energy storage materials and the research methods to improve energy storage property were introduced emphatically,including the influences of the structure and morphology of inorganic fillers with high dielectric constant and high insulation properties or multifunctional composite fillers on the performance of composite films,and the studies on the property of interface micro-area.The future research direction of interface design for high-temperature medium energy storage composite materials was discussed.