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Issue 10, 2017
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Electrochemical synthesis of MnO2 porous nanowires for flexible all-solid-state supercapacitor

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Abstract

MnO2 porous nanowires were prepared with an Au-coated polycarbonate membrane as the template via a simple electrodeposition method. The obtained film could be used directly as a flexible all-solid-state supercapacitor electrode. The structures of the final product were characterized by various characterization techniques including scanning electron microscopy (SEM), X-ray diffraction (XRD), FT-IR spectra, and X-ray photoelectron spectroscopic (XPS). The electrochemical results showed that MnO2 porous nanowire-based electrode materials had high capacitive performances. The areal capacitance of the prepared supercapacitor with a MnO2 deposition time of 200 s was 44.6 mF cm−2. Under different bending conditions, the areal capacitance of the supercapacitor still remained at 90.5%, indicating the highly flexible property. Furthermore, it nearly remained at 89.6% of its initial capacitive value after 2000 cycles at a current density of 0.4 mA cm−1, showing its excellent cycle stability. However, the prepared supercapacitor can power a light-emitting-diode (LED) to meet practical applications for micro-power supplies.

Graphical abstract: Electrochemical synthesis of MnO2 porous nanowires for flexible all-solid-state supercapacitor

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Publication details

The article was received on 29 Dec 2016, accepted on 26 Mar 2017 and first published on 28 Mar 2017


Article type: Paper
DOI: 10.1039/C6NJ04118C
Citation: New J. Chem., 2017,41, 3750-3757
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    Electrochemical synthesis of MnO2 porous nanowires for flexible all-solid-state supercapacitor

    J. Song, H. Li, S. Li, H. Zhu, Y. Ge, S. Wang, X. Feng and Y. Liu, New J. Chem., 2017, 41, 3750
    DOI: 10.1039/C6NJ04118C

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