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Issue 23, 2013
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Facilitated charge transport in ternary interconnected electrodes for flexible supercapacitors with excellent power characteristics

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Abstract

Flexible and high performance supercapacitors are very critical in modern society. In order to develop the flexible supercapacitors with high power density, free-standing and flexible three-dimensional graphene/carbon nanotubes/MnO2 (3DG/CNTs/MnO2) composite electrodes with interconnected ternary 3D structures were fabricated, and the fast electron and ion transport channels were effectively constructed in the rationally designed electrodes. Consequently, the obtained 3DG/CNTs/MnO2 composite electrodes exhibit superior specific capacitance and rate capability compared to 3DG/MnO2 electrodes. Furthermore, the 3DG/CNTs/MnO2 based asymmetric supercapacitor demonstrates the maximum energy and power densities of 33.71 W h kg−1 and up to 22 727.3 W kg−1, respectively. Moreover, the asymmetric supercapacitor exhibits excellent cycling stability with 95.3% of the specific capacitance maintained after 1000 cycle tests. Our proposed synthesis strategy to construct the novel ternary 3D structured electrodes can be efficiently applied to other high performance energy storage/conversion systems.

Graphical abstract: Facilitated charge transport in ternary interconnected electrodes for flexible supercapacitors with excellent power characteristics

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Publication details

The article was received on 29 Jul 2013, accepted on 16 Sep 2013 and first published on 23 Sep 2013


Article type: Paper
DOI: 10.1039/C3NR03923D
Nanoscale, 2013,5, 11733-11741

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    Facilitated charge transport in ternary interconnected electrodes for flexible supercapacitors with excellent power characteristics

    W. Chen, Y. He, X. Li, J. Zhou, Z. Zhang, C. Zhao, C. Gong, S. Li, X. Pan and E. Xie, Nanoscale, 2013, 5, 11733
    DOI: 10.1039/C3NR03923D

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