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Issue 41, 2015
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Stackable, three dimensional carbon–metal oxide composite for high performance supercapacitors

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Abstract

We report a stackable all-solid-state supercapacitor based on three dimensional PPy–NiO/RGO–CNT electrodes. The electrodes were prepared by growing NiO nanowalls (NWs) on both sides of a freestanding RGO–CNT film with the hydrothermal method, followed by coating with conductive polypyrrole. The double-sided architecture of the NiO NWs on a carbon-based current collector suggests that the novel approach addresses the issue of low areal capacitance in supercapacitors. Furthermore, conductive polypyrrole renders fast electron transport through the two-dimensional structure of NiO NWs. With our 3D-designed electrodes, we successfully fabricated a stackable all-solid-state supercapacitor and thus achieved a high areal capacitance of 1948 mF cm−2.

Graphical abstract: Stackable, three dimensional carbon–metal oxide composite for high performance supercapacitors

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Publication details

The article was received on 10 Aug 2015, accepted on 17 Sep 2015 and first published on 18 Sep 2015


Article type: Communication
DOI: 10.1039/C5TA06266G
Citation: J. Mater. Chem. A, 2015,3, 20459-20464
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    Stackable, three dimensional carbon–metal oxide composite for high performance supercapacitors

    J. H. Kim, S. Lee, J. Choi, T. Song and U. Paik, J. Mater. Chem. A, 2015, 3, 20459
    DOI: 10.1039/C5TA06266G

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