Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (9): 1828-1837.doi: 10.3866/PKU.WHXB201705089

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Flexible All-Solid-State Supercapacitor Based on Three-Dimensional Porous Graphene/Titanium-Containing Copolymer Composite Film

Wei-Shi DU1,Yao-Kang LÜ1,2,*(),Zhi-Wei CAI3,Cheng ZHANG1,*()   

  1. 1 College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
    2 Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
    3 Zhejiang Institute For Food and Drug Control, Hangzhou 310051, P. R. China
  • Received:2017-03-21 Published:2017-07-05
  • Contact: Yao-Kang Lü,Cheng ZHANG;
  • Supported by:
    The project was supported by the National Natural Science Foundation of China(21501148);Zhejiang Provincial Natural Science Foundation of China(LQ15E030002);Zhejiang Provincial Natural Science Foundation of China(LY15E030006);China Postdoctoral Science Foundation(2016M570075)


A new three-dimensional (3D) porous graphene thin film named rGO-Fe was prepared through chemical reduction from Fe3+ ions cross-linking graphene oxide hydrogel, and a 3D porous graphene/titanium-containing conjugated polymer composite film named rGO-Fe/P(EDOT:P3C)-1-Ti was further prepared via electrochemical polymerization on the rGO-Fe substrate. As a new composite film, rGO-Fe/P(EDOT:P3C)-1-Ti film with average thickness of 3 μm can withstand the tensile load 0.97 N which is better than that of rGO-Fe (0.76 N). We compared the electrochemical properties of these film materials, and prepared self-supporting electrodes and a flexible all-solid-state supercapacitor based on rGO-Fe/P(EDOT:P3C)-1-Ti. Galvanostatic charge-discharge test results showed that the as prepared flexible supercapacitor delivered a gravimetric specific capacitance of 71.13 F·g-1 (18.14 F·g-1) and an area specific capacitance of 101 mF·cm-2 (25.8 mF·cm-2) at 0.1 A·g-1 (0.6 A·g-1).

Key words: Graphene, Electrochemical polymerization, Cross-linking, Porous film, Titanium-containing conjugated polymer, Flexible all-solid-state supercapacitor


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