Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (8): 2694.doi: 10.7503/cjcu20200882

• Materials Chemistry • Previous Articles    

Graphene Oxide/Polyimide Composites with High Energy Storage Density Based on Multilayer Structure

ZHU Deshuai1, ZHAO Jianying1(), YANG Zhenghui2, GUO Haiquan2(), GAO Lianxun2   

  1. 1.School of Chemistry and Chemical Engineering,Shandong University of Technology,Zibo 255049,China
    2.State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2020-12-21 Online:2021-08-10 Published:2021-08-05
  • Contact: ZHAO Jianying;
  • Supported by:
    the National Key R&D Program of China(2017YFB0404700)


A variety of multi-layer nanocomposite films composed of both high insulation polyimide(PI) layer and high dielectric constant graphene oxide/polyimide(GO@PI) composite layer were fabricated through layer by layer coating. The GO content and layered structure of the dielectric layer were adjusted to make the multilayer composite films with high dielectric constant and high breakdown strength. The results showed that the energy storage density of tri-layer PI/1.0 GO@PI/PI composite film was 1.27 J/cm3 at 261.5 kV/mm. Compared with the mono-layer 1.0 GO@PI film, the breakdown strength and energy storage density of the tri-layer PI/1.0 GO@PI/PI composite film were increased by 97% and 144%, respectively. Meanwhile, the dielectric loss of the composite film remained at a relatively low level(tanδ=0.0079). The composition of insulating layer and high dielectric layer afforded the synergistic effect to remedy the energy density of the multilayer composite film. The multi-layer structure strategy is benefical to the application of graphene oxide/polyimide composites in dielectric energy storage filed.

Key words: Graphene oxide, Multi-layer structure, Polyimide, Dielectric constant, Energy storage density

CLC Number: