Citation: DU Wei-Shi, LÜ Yao-Kang, CAI Zhi-Wei, ZHANG Cheng. Flexible All-Solid-State Supercapacitor Based on Three-Dimensional Porous Graphene/Titanium-Containing Copolymer Composite Film[J]. Acta Physico-Chimica Sinica, ;2017, 33(9): 1828-1837. doi: 10.3866/PKU.WHXB201705089 shu

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

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 Date: 21 March 2017
Revised Date: 21 April 2017

Fund Project: The project was supported by the National Natural Science Foundation of China (21501148), Zhejiang Provincial Natural Science Foundation of China (LQ15E030002, LY15E030006), and China Postdoctoral Science Foundation (CPSF-2015M570075).

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).
- Graphene,
- Electrochemical polymerization,
- Cross-linking,
- Porous film,
- Titanium-containing conjugated polymer,
- Flexible all-solid-state supercapacitor
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