Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.

Issue 7, 2019
Previous Article Next Article

Multilayered hierarchical polymer composites for high energydensity capacitors

Author affiliations


There is an urgent need to develop advanced energy storage materials to meet the ever-increasing demands of modern electronics and electrical power systems. Polymer-based dielectric materials are one of the most promising energy materials due to their unique combination of high breakdown strength, low dielectric loss, light weight and ultrahigh power density. However, their energy densities are severely limited by their low dielectric constants (K) and thus fall short of the demands of compact and efficient energy storage devices. Remarkable efforts have been performed to improve K, and consequently, energy densities of polymers, e.g. introducing high-K inorganic fillers into the polymer matrix to form polymer composites. However, a general drawback is that the increased K is usually achieved at the cost of substantially decreased breakdown strength, thus leading to a moderate improvement of energy density. More recently, the polymer dielectrics with optimized hierarchically layered structures has become an emerging approach to resolve the existing paradox between high K and high breakdown strength in single-layered composite films, which resulted in substantial improvement in their capacitive energy storage performance. It is demonstrated that the electric field distribution, breakdown strength and capacitive performance can be readily adjusted by systematically varying the interfaces, chemical structures and ratios of the constituent layers. This review, for the first time, outlines the contemporary models and theories, and summarizes the research advances of multilayered hierarchical polymer composites (MHPCs), including inorganic particle/organic MHPCs and all-organic layered films in the field of high-energy-density capacitors. The efficient strategies for improving the energy storage performance of MHPCs have been highlighted. To conclude, the remaining challenges and the promising opportunities for the development of MHPCs for capacitive energy storage applications are presented.

Graphical abstract: Multilayered hierarchical polymer composites for high energydensity capacitors

Back to tab navigation

Article information

27 Nov 2018
08 Jan 2019
First published
10 Jan 2019

J. Mater. Chem. A, 2019,7, 2965-2980
Article type
Review Article

Multilayered hierarchical polymer composites for high energydensity capacitors

Y. Wang, J. Chen, Y. Li, Y. Niu, Q. Wang and H. Wang, J. Mater. Chem. A, 2019, 7, 2965
DOI: 10.1039/C8TA11392K

Social activity

Search articles by author