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Issue 9, 2014
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Flexible symmetrical planar supercapacitors based on multi-layered MnO2/Ni/graphite/paper electrodes with high-efficient electrochemical energy storage

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Abstract

High-performance planar supercapacitors have attracted increasing attention because of their thin, light and flexible abilities. Here we developed novel flexible symmetrical planar supercapacitors (FSPSCs) by using the multi-layered MnO2/Ni/graphite/paper electrodes that were fabricated by sequentially coating a graphite layer, Ni layer, and MnO2 layer on ordinary cellulose paper. The MnO2/Ni/graphite/paper electrodes show a large specific capacitance (Csp) of 175 mF cm−2 at a scan rate of 5 mV s−1. The assembled FSPSCs based on the multi-layered MnO2/Ni/graphite/paper electrodes exhibit a large volumetric Csp (1020 mF cm−3 at 5 mV s−1) and a superior long-term cycle stability (less 4% loss of the maximum Csp after 6000 cycles). The FSPSCs based on the multi-layered MnO2/Ni/graphite/paper electrodes may open up new opportunities in developing novel supercapacitor devices because of the low-cost, high performance, and facile large-scale fabrication procedures.

Graphical abstract: Flexible symmetrical planar supercapacitors based on multi-layered MnO2/Ni/graphite/paper electrodes with high-efficient electrochemical energy storage

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Publication details

The article was received on 14 Nov 2013, accepted on 26 Nov 2013 and first published on 26 Nov 2013


Article type: Paper
DOI: 10.1039/C3TA14695B
Citation: J. Mater. Chem. A, 2014,2, 2985-2992
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    Flexible symmetrical planar supercapacitors based on multi-layered MnO2/Ni/graphite/paper electrodes with high-efficient electrochemical energy storage

    J. Feng, Q. Li, X. Lu, Y. Tong and G. Li, J. Mater. Chem. A, 2014, 2, 2985
    DOI: 10.1039/C3TA14695B

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