PMMA基高储能电介质材料研究进展

Research progress in PMMA-based dielectric materials with high energy storage

聚合物薄膜电容器因其超高的充放电效率而被广泛应用于许多领域,如高脉冲功率技术、航空航天技术和新能源汽车等。储能应用的聚合物电介质往往需要较高的能量密度和储能效率,目前薄膜电容器中商业化应用最为广泛的双轴拉伸聚丙烯(BOPP)薄膜已不能满足日益增长的电能储存需求。在众多的聚合物电介质材料中,聚甲基丙烯酸甲酯(PMMA)因其高击穿强度、低介质损耗和易加工等优点而受到广泛关注。本文综述了PMMA本征型和复合型电介质材料在储能领域的研究进展,重点对通过化学改性和物理改性提升聚合物储能电介质材料的能量密度和储能效率的方法进行了归纳整理,最后对电介质材料未来的发展方向进行了展望。

Polymer film capacitors are widely used in many fields,such as high-pulse power technology,aerospace technology,and new energy vehicles due to their ultra-high charge and discharge efficiency.Polymer dielectrics used in energy storage applications often require high energy density and energy storage efficiency,and biaxial tensile polypropylene(BOPP)films,which are widely used in commercial thin-film capacitors,cannot meet the increasing demand for energy storage.Among many polymer dielectric materials,polymethyl methacrylate(PMMA)has attracted extensive attention due to its high breakdown strength,low dielectric loss,and easy processing.In this paper,the research progress of PMMA basic characteristic and composite dielectric materials in the field of energy storage was reviewed.The methods to improve the energy density and energy storage efficiency of polymer dielectric materials through chemical modification and physical modification were summarized,and the future development direction of dielectric materials was prospected.