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Issue 29, 2015
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Hybrid nickel manganese oxide nanosheet–3D metallic dendrite percolation network electrodes for high-rate electrochemical energy storage

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Abstract

This work reports the fabrication, by electrodeposition and post-thermal annealing, of hybrid electrodes for high rate electrochemical energy storage composed of nickel manganese oxide (Ni0.86Mn0.14O) nanosheets over 3D open porous dendritic NiCu foams. The hybrid electrodes are made of two different percolation networks of nanosheets and dendrites, and exhibit a specific capacitance value of 848 F g−1 at 1 A g−1. The electrochemical tests revealed that the electrodes display an excellent rate capability, characterized by capacitance retention of approximately 83% when the applied current density increases from 1 A g−1 to 20 A g−1. The electrodes also evidenced high charge–discharge cycling stability, which attained 103% after 1000 cycles.

Graphical abstract: Hybrid nickel manganese oxide nanosheet–3D metallic dendrite percolation network electrodes for high-rate electrochemical energy storage

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Publication details

The article was received on 04 May 2015, accepted on 16 Jun 2015 and first published on 17 Jun 2015


Article type: Paper
DOI: 10.1039/C5NR02888D
Citation: Nanoscale, 2015,7, 12452-12459
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    Hybrid nickel manganese oxide nanosheet–3D metallic dendrite percolation network electrodes for high-rate electrochemical energy storage

    T. Nguyen, S. Eugénio, M. Boudard, L. Rapenne, M. J. Carmezim, T. M. Silva and M. F. Montemor, Nanoscale, 2015, 7, 12452
    DOI: 10.1039/C5NR02888D

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