Dou Lvye, Lin Yuan-Hua, Nan Ce-Wen
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Foshan (Southern China) Institute for New Materials, Foshan 528000, China.
Molecules. 2021 Oct 12;26(20):6148. doi: 10.3390/molecules26206148.
As one of the most important energy storage devices, dielectric capacitors have attracted increasing attention because of their ultrahigh power density, which allows them to play a critical role in many high-power electrical systems. To date, four typical dielectric materials have been widely studied, including ferroelectrics, relaxor ferroelectrics, anti-ferroelectrics, and linear dielectrics. Among these materials, linear dielectric polymers are attractive due to their significant advantages in breakdown strength and efficiency. However, the practical application of linear dielectrics is usually severely hindered by their low energy density, which is caused by their relatively low dielectric constant. This review summarizes some typical studies on linear dielectric polymers and their nanocomposites, including linear dielectric polymer blends, ferroelectric/linear dielectric polymer blends, and linear polymer nanocomposites with various nanofillers. Moreover, through a detailed analysis of this research, we summarize several existing challenges and future perspectives in the research area of linear dielectric polymers, which may propel the development of linear dielectric polymers and realize their practical application.
作为最重要的储能器件之一，介电电容器因其超高的功率密度而受到越来越多的关注，这使得它们在许多高功率电气系统中发挥着关键作用。迄今为止，四种典型的介电材料已得到广泛研究，包括铁电体、弛豫铁电体、反铁电体和线性电介质。在这些材料中，线性介电聚合物因其在击穿强度和效率方面的显著优势而备受关注。然而，线性电介质的实际应用通常受到其低能量密度的严重阻碍，这是由其相对较低的介电常数所致。本文综述了一些关于线性介电聚合物及其纳米复合材料的典型研究，包括线性介电聚合物共混物、铁电/线性介电聚合物共混物以及含有各种纳米填料的线性聚合物纳米复合材料。此外，通过对该研究的详细分析，我们总结了线性介电聚合物研究领域中现有的几个挑战和未来展望，这可能推动线性介电聚合物的发展并实现其实际应用。
