Volume 1,Issue 5
Fall 2025
紫外光调控对PVDF 聚合物薄膜相结构和储能性能的影响
PVDF 柔性电介质电容器上因具有超高的功率密度、超快的响应时间和较高的能量密度，是未来电力电子器件集成化小型化、智能柔性可穿戴电子设备普及、新能源汽车行业科技创新、开发节能环保新能源技术等的重要物质基础。电介质电容器的能量密度与介电常数和击穿强度有关，然而二者存在内禀性矛盾，常见的解耦调控手段有全有机共混、陶瓷掺杂、核壳结构、多层、微纳调控等，但是以上方法存在制备程序繁琐、成本高、周期长、渗流阈值不可控等缺点。本文通过引入垂直于聚合物薄膜的紫外光调控单层纯PVDF 电介质电容器，分别研究了晶粒尺寸、相结构等对单层纯PVDF 电介质电容器介电性能和储能性能的影响。通过调控紫外光照时间实现介电性能的解耦调控，获得介电常数为13.4，击穿强度为528.4kV/mm，放电能量密度为4.6 J/cm3的单层纯PVDF。
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