Construct dielectric films with high energy density and efficiency are the key factor to fabricate high-performance dielectric film capacitors. In this paper, an all organic composite film was constructed based on high dielectric polymer and linear dielectric polymer. After the optimized polycondensation reaction of a linear dielectric polymer aromatic polythiourea (ArPTU), the proper molecular weight ArPTU was obtained, which was introduced into poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (PVDF-TrFE-CFE) terpolymer for a composite dielectrics. The results indicate that the addition of ArPTU molecules reduces the dielectric loss and improves the breakdown field strength of the PVDF-TrFE-CFE effectively. For the PVDF-TrFE-CFE/ArPTU (90/10) composite film, the maximum energy density about 22.06 J/cm3 at 407.57 MV/m was achieved, and high discharge efficiency about 72% was presented. This composite material can be casted on flexible substrate easily, and PVDF-TrFE-CFE/ArPTU organic composite films having high energy density, high breakdown field strength, low dielectric loss, and higher discharge efficiency are obtained. This is an unreported exploration about high energy density organic dielectric films based on PVDF-TrFE-CFE matrix and linear polymer dielectrics, and the findings of this research can provide a simple and scalable method for producing flexible high energy density materials for energy storage devices.

中文翻译：

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通过将聚偏二氟乙烯-三氟乙烯-氯氟乙烯与芳族聚硫脲共混来获得高能量密度薄膜电容器的所有聚合物介电薄膜。

构建具有高能量密度和效率的介电膜是制造高性能介电膜电容器的关键因素。本文以高介电聚合物和线性介电聚合物为基础，构建了一种全有机复合薄膜。经过线性介电聚合物芳族聚硫脲（ArPTU）的优化缩聚反应后，获得了合适的分子量ArPTU，并将其引入到聚（偏二氟乙烯-三氟乙烯-氯氟乙烯）（PVDF-TrFE-CFE）三元共聚物中作为复合电介质。结果表明，添加ArPTU分子可降低介电损耗并有效提高PVDF-TrFE-CFE的击穿场强。对于PVDF-TrFE-CFE / ArPTU（90/10）复合膜，在407.57 MV / m的情况下，获得了约22.06 J / cm3的最大能量密度，并提出了约72％的高放电效率。该复合材料可以容易地流延到柔性基板上，并且获得具有高能量密度，高击穿场强，低介电损耗和较高放电效率的PVDF-TrFE-CFE / ArPTU有机复合膜。这是关于基于PVDF-TrFE-CFE基质和线性聚合物电介质的高能量密度有机介电膜的未报道的探索，这项研究的发现可为生产用于储能装置的柔性高能量密度材料提供简单而可扩展的方法。并获得更高的放电效率。这是关于基于PVDF-TrFE-CFE基质和线性聚合物电介质的高能量密度有机介电膜的一项未报道的探索，这项研究的发现可为生产用于储能装置的柔性高能量密度材料提供一种简单且可扩展的方法。并获得更高的放电效率。这是关于基于PVDF-TrFE-CFE基质和线性聚合物电介质的高能量密度有机介电膜的未报道的探索，这项研究的发现可为生产用于储能装置的柔性高能量密度材料提供简单而可扩展的方法。