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Issue 10, 2010
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A nanostructured graphene/polyaniline hybrid material for supercapacitors

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Abstract

A flexible graphene/polyaniline hybrid material as a supercapacitor electrode was synthesized by an in situ polymerization-reduction/dedoping-redoping process. This product was first prepared in an ethylene glycol medium, then treated with hot sodium hydroxide solution to obtain the reduced graphene oxide/polyaniline hybrid material. Sodium hydroxide also acted as a dedoping reagent for polyaniline in the composite. After redoping in an acidic solution, the thin, uniform and flexible conducting graphene/polyaniline product was obtained with unchanged morphology. The chemical structure of the materials was characterized by X-ray photoelectron spectroscopy and Raman spectroscopy. The composite material showed better electrochemical performances than the pure individual components. A high specific capacitance of 1126 F g−1 was obtained with a retention life of 84% after 1000 cycles for supercapacitors. The energy density and power density were also better than those of pure component materials.

Graphical abstract: A nanostructured graphene/polyaniline hybrid material for supercapacitors

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Publication details

The article was received on 29 Mar 2010, accepted on 02 Jun 2010 and first published on 06 Aug 2010


Article type: Paper
DOI: 10.1039/C0NR00224K
Citation: Nanoscale, 2010,2, 2164-2170
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    A nanostructured graphene/polyaniline hybrid material for supercapacitors

    H. Wang, Q. Hao, X. Yang, L. Lu and X. Wang, Nanoscale, 2010, 2, 2164
    DOI: 10.1039/C0NR00224K

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