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Issue 1, 2016
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Asymmetric supercapacitors with high energy density based on helical hierarchical porous NaxMnO2 and MoO2

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Abstract

Helical hierarchical porous NaxMnO2/CC and MoO2/CC, which are assembled from nanosheets and nanoparticles, respectively, are fabricated using a simple electrodeposition method. These unique helical porous structures enable electrodes to have a high capacitance and an outstanding cycling performance. Based on the helical NaxMnO2/CC as the positive electrodes and helical MoO2/CC as the negative electrodes, high performance NaxMnO2/CC//MoO2/CC asymmetric supercapacitors (ASCs) are successfully assembled, and they achieve a maximum volume Csp of 2.04 F cm−3 and a maximum energy density of 0.92 mW h cm−3 for the whole device and an excellent cycling stability with 97.22% Csp retention after 6000 cycles.

Graphical abstract: Asymmetric supercapacitors with high energy density based on helical hierarchical porous NaxMnO2 and MoO2

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Publication details

The article was received on 03 Sep 2015, accepted on 06 Oct 2015 and first published on 07 Oct 2015


Article type: Edge Article
DOI: 10.1039/C5SC03326H
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Chem. Sci., 2016,7, 510-517
  • Open access: Creative Commons BY-NC license
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    Asymmetric supercapacitors with high energy density based on helical hierarchical porous NaxMnO2 and MoO2

    X. Lu, Z. Huang, Y. Tong and G. Li, Chem. Sci., 2016, 7, 510
    DOI: 10.1039/C5SC03326H

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