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Issue 8, 2014
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Selective synthesis of hierarchical mesoporous spinel NiCo2O4 for high-performance supercapacitors

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Abstract

Hierarchical mesoporous spinel NiCo2O4 was synthesized by a facile hydrothermal method assisted by polyvinylpyrrolidone (PVP) and a post annealing treatment. The synthesized hierarchical mesoporous NiCo2O4 presents a hierarchical mesoporous structure with diameters of 5.0 and 25 nm, respectively. Compared to conventional flower-like NiCo2O4, the hierarchical mesoporous structured NiCo2O4 exhibits excellent supercapacitor performance. The specific capacitance can reach 1619.1 F g−1 at a current density of 2.0 A g−1. When the current density is increased to 10.0 A g−1, a specific capacitance of 571.4 F g−1 can be obtained. Furthermore, the hierarchical mesoporous structured NiCo2O4 presents excellent stability. The outstanding electrochemical performance of the hierarchical mesoporous NiCo2O4 reveals its potential to be a promising material for use in supercapacitors, and also inspires continued research on binary metal oxides as energy transformation materials.

Graphical abstract: Selective synthesis of hierarchical mesoporous spinel NiCo2O4 for high-performance supercapacitors

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Publication details

The article was received on 11 Dec 2013, accepted on 24 Jan 2014 and first published on 24 Jan 2014


Article type: Paper
DOI: 10.1039/C3NR06564B
Nanoscale, 2014,6, 4303-4308

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    Selective synthesis of hierarchical mesoporous spinel NiCo2O4 for high-performance supercapacitors

    Y. Zhang, M. Ma, J. Yang, H. Su, W. Huang and X. Dong, Nanoscale, 2014, 6, 4303
    DOI: 10.1039/C3NR06564B

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