1D/2D Carbon Nanomaterial‐Polymer Dielectric Composites with High Permittivity for Power Energy Storage Applications. Issue 13 (11th February 2016)

• Record Type: Journal Article
• Authors: Dang, Zhi‐Min; Zheng, Ming‐Sheng; Zha, Jun‐Wei
• Is Part Of: Small. Volume 12:Issue 13(2016)
• Page Start: 1688
• Page End: 1701
• Publication Date: 2016-02-11
• Subjects: carbon nanomaterials -- polymer composites -- dielectric properties -- breakdown strength -- energy storage; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201503193
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : 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. Abstract : 1D/2D carbon nanomaterial‐polymer dielectric composites are a promising way to realize excellent dielectric properties and high energy density with low filler concentration, which are essential in power energy storage application. Progress in recent years is summarized and the advantages and disadvantages of different strategies are identified to provide clearer paths for researchers in this field.