聚合物基复合薄膜的高温储能性能研究进展

Research Progress on High Temperature Energy Storage Performance of Polymer-based Composite Dielectric Films

聚合物薄膜电容器具有功率密度大、安全性高、绝缘性好等优点而被广泛应用在工程领域。近年来,随着新能源交通、清洁能源并网、油气开采等领域对具有优异高温储能特性的介电薄膜电容器需求日益增加,高温、高电场等极限条件下介质薄膜电容器的储能受到越来越多的关注,相关研究已成为电工材料领域的研究热点。该文总结近年来有关聚合物基复合薄膜的高温储能研究进展。首先,介绍决定电介质材料高温储能特性的关键参数,分析高温、高电场对相关参数的影响规律;其次,梳理基于不同空间层次设计的聚合物薄膜高温储能特性优化研究现状,从分子结构、微观结构、介观结构3个方面总结高温储能性能的调控方法;最后,对进一步提升聚合物薄膜的高温储能性能做出展望。

Polymer film capacitors are widely used in engineering fields due to the advantages of high power density, high safety and good insulation and so on. In recent years, with the increasing demand of high temperature energy storage of dielectric thin film capacitors in new energy transportation, clean energy grid connection, oil and gas exploitation, etc., the energy storage properties of dielectric film capacitors under extreme conditions such as high temperature and high electric field have attracted more and more attention, which has being a research hotspot in the field of electrical materials. In this paper, the research progress of high temperature energy storage of polymer-based composite dielectric films in recent years are summarized. Firstly, the key parameters that determine high temperature energy storage characteristics of dielectric materials are introduced, and the influences of high temperature and high electric field on these key parameters are analyzed. Secondly, the research status of the optimized of high-temperature energy storage properties of polymer-based films with different spatial levels are reviewed, and the adjusting methods for high-temperature energy storage properties are summarized from the aspects of molecular structure, micro structure and mesoscopic structure. Finally, a brief prospect for further improving the high temperature energy storage properties of polymer films is presented.