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Issue 7, 2014
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High performance flexible solid-state asymmetric supercapacitors from MnO2/ZnO core–shell nanorods//specially reduced graphene oxide

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Abstract

With a view to developing flexible solid-state asymmetric supercapacitors, we have specially designed and nanoscopically engineered two types of electrodes: a MnO2/ZnO core–shell nanorod array and a HI-reduced graphene oxide assembly, both deposited in situ on a carbon cloth. These materials were thoroughly characterized by structural and spectroscopic techniques. The flexible solid-state asymmetric supercapacitors with cathodes and anodes made of these materials have demonstrated superior performance characteristics. They can be cycled in a wide potential window of 0–1.8 V for 5000 cycles with only 1.5% capacitance loss. The demonstrated volumetric energy density of 0.234 mW h cm−3 and volumetric power density of 0.133 W cm−3 are much higher than those of similar devices reported previously in the literature.

Graphical abstract: High performance flexible solid-state asymmetric supercapacitors from MnO2/ZnO core–shell nanorods//specially reduced graphene oxide

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Publication details

The article was received on 29 Jul 2013, accepted on 02 Sep 2013 and first published on 02 Sep 2013


Article type: Paper
DOI: 10.1039/C3TC31476F
Citation: J. Mater. Chem. C, 2014,2, 1331-1336

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    High performance flexible solid-state asymmetric supercapacitors from MnO2/ZnO core–shell nanorods//specially reduced graphene oxide

    W. Zilong, Z. Zhu, J. Qiu and S. Yang, J. Mater. Chem. C, 2014, 2, 1331
    DOI: 10.1039/C3TC31476F

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