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Citation: ZHANG Haiying, HU Zhongai, ZHANG Fuhai, LIANG Pengju, ZHANG Yajun, YANG Yuying, ZHANG Ziyu, WU Hongying. Synthesis of Polypyrrole/Reduced Graphene Oxide and Its Capacitive Properties[J]. Chinese Journal of Applied Chemistry, ;2012, 29(6): 674-681. doi: 10.3724/SP.J.1095.2012.00430 shu

Synthesis of Polypyrrole/Reduced Graphene Oxide and Its Capacitive Properties

1.
Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China

Corresponding author: HU Zhongai,
Received Date: 25 September 2011
Available Online: 7 December 2011
Fund Project: 国家自然科学基金(20963009和21163017) (20963009和21163017)甘肃省自然科学基金(0803RJA005)资助项目 (0803RJA005)

Polypyrrole/graphite oxide composites(PPy/GO) with different mass ratios were first prepared by in situ polymerization and then reduced by NaBH₄ to form polypyrrole/reduced graphene oxide(PPy/RGO).The morphology and structure of the composites were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR) and field emission scanning electron microscopy(FESEM).The electrochemical performances of the composites were investigated by cyclic voltammetry,galvanostatic charge discharge and electrochemical impedance techniques.The experimental results showed that the composites with the mass ratio of Py to GO up to 95: 5 reached the specific capacitances of 401.5 and 314.5 F/g before and after reduction at the current density of 0.5 A/g,respectively,which were much higher in comparison with pristine GO(34.8 F/g) and PPy(267.5 F/g).The capacitance retention is about 62.5% for PPy/RGO after 1200 cycles,which is much better than those of 16.8% for PPy and 46.4% for PPy/GO,indicating that the PPy/RGO has a high cycle stability and potential as electrode material for supercapacitors.
- supercapacitor,
- polypyrrole/graphite oxide,
- composite,
- electrochemical performances
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