In current, the energy storage materials based on electrets and ferroelectric polymers are urgently demanded for electric power supply and renewable energy applications. The high energy storage density can be enhanced by conducting or inorganic fillers to ferroelectric polymer matrix. However, agglomeration, phase separation of fillers, interfacial phase regions and crystallinity of matrix remain the main factors for the improvement of energy storage density in those composites. Poly(vinylidene fluoride-hexafluoropropylene) was modified with graphene nanoplatelets for enhanced the dielectric properties and energy storage density, which combines the irradiated by electron beam. Tuning effect of the crystalline regions and polar phases with graphene nanoplatelets and electron irradiation on its surface, structure, electrical and energy storage properties were observed. The film homogeneity was increased by reducing the pores, along with the improvement of surface roughness and hydrophobicity, which related with the dielectric properties and energy storage density. The β-phase fraction and crystallinity improvement significantly affect electrical properties by improving polarization and dielectric constant. As a core, electron beam dramatically reduce the crystals size by two times. Hence, energy storage density of composites was enhanced, while energy loss was reduced under operating conditions. Results on the improvement of energy efficiency were from 68.11 to 74.66% for neat poly(vinylidene fluoride-hexafluoropropylene) (P(VDF-HFP)), much higher than previously reported of 58%, and doubled for P(VDF-HFP)/GNPs composites which will be discussed and evaluated for the practical energy storage materials.

中文翻译：

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电子束辐照提高调谐聚偏二氟乙烯/六氟丙烯/石墨烯纳米片状聚合物复合材料的储能密度

当前，迫切需要基于驻极体和铁电聚合物的储能材料用于电力供应和可再生能源应用。可以通过在铁电聚合物基体中添加导电或无机填料来提高高能量存储密度。然而，团聚，填料的相分离，界面相区域和基体的结晶度仍然是提高这些复合材料储能密度的主要因素。用石墨烯纳米片对聚偏二氟乙烯-六氟丙烯进行了改性，以增强介电性能和能量存储密度，并结合了电子束的照射。石墨烯纳米片的结晶区域和极性相的调谐效应以及在其表面，结构上的电子辐照，观察到电和能量存储特性。通过减少孔洞，提高了薄膜的均匀性，同时改善了表面粗糙度和疏水性，这与介电性能和储能密度有关。β相分数和结晶度的改善通过改善极化和介电常数而显着影响电性能。作为核心，电子束可将晶体尺寸显着减小两倍。因此，提高了复合材料的储能密度，同时降低了运行条件下的能量损失。纯净的聚偏二氟乙烯-六氟丙烯（P（VDF-HFP））的能效提高结果从68.11提高到74.66％，远高于先前报道的58％，