1D/2D Carbon Nanomaterial-Polymer Dielectric Composites with High Permittivity for Power Energy Storage Applications
1D/2D Carbon Nanomaterial-Polymer Dielectric Composites with High Permittivity for Power Energy Storage Applications
复制标题
用于电力储能应用的高介电常数一维/二维碳纳米材料-聚合物介电复合材料
DOI：
10.1002/smll.201503193
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发表时间：
2016-04-06
期刊：
影响因子：
13.3
通讯作者：
Zha, Jun-Wei
中科院分区：
文献类型：
--
作者：
Dang, Zhi-Min;Zheng, Ming-Sheng;Zha, Jun-Wei
随着柔性电子器件和大规模储能技术的发展，高介电常数(高介电常数)功能聚合物基纳米复合材料以其易加工、易弯曲、低成本等优点受到越来越多的关注。当导电功能填料分散到聚合物中时，渗流效应常被用来解释聚合物复合材料的高k特性，这使得聚合物复合材料具有很低的填充量，从而使聚合物复合材料具有良好的柔韧性。碳纳米管(CNTs)和石墨烯纳米片(GNS)分别作为一维(1D)和二维(2D)碳纳米材料，在实现柔性高介电常数纳米复合材料方面具有巨大的潜力。由于其独特和卓越的优势，它们在许多领域变得越来越有吸引力。介绍了一维/二维碳纳米材料作为功能填料在聚合物基复合材料介电领域的研究进展，探讨了提高其介电性能、击穿强度和储能密度的方法和机理。实现碳纳米材料的均匀分散状态和阻止其聚合物复合材料中导电网络的发展是电力储能介电领域仍需解决的两个主要问题。总结了最新的发现、目前存在的问题和未来的展望。
With the development of flexible electronic devices and large-scale energy storage technologies, functional polymer-matrix nanocomposites with high permittivity (high-k) are attracting more attention due to their ease of processing, flexibility, and low cost. The percolation effect is often used to explain the high-k characteristic of polymer composites when the conducting functional fillers are dispersed into polymers, which gives the polymer composite excellent flexibility due to the very low loading of fillers. Carbon nanotubes (CNTs) and graphene nanosheets (GNs), as one-dimensional (1D) and two-dimensional (2D) carbon nanomaterials respectively, have great potential for realizing flexible high-k dielectric nanocomposites. They are becoming more attractive for many fields, owing to their unique and excellent advantages. The progress in dielectric fields by using 1D/2D carbon nanomaterials as functional fillers in polymer composites is introduced, and the methods and mechanisms for improving dielectric properties, breakdown strength and energy storage density of their dielectric nanocomposites are examined. Achieving a uniform dispersion state of carbon nanomaterials and preventing the development of conductive networks in their polymer composites are the two main issues that still need to be solved in dielectric fields for power energy storage. Recent findings, current problems, and future perspectives are summarized.