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Issue 16, 2015
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Two-dimensional NiCo2O4 nanosheet-coated three-dimensional graphene networks for high-rate, long-cycle-life supercapacitors

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Abstract

We report the synthesis of two-dimensional (2D) NiCo2O4 nanosheet-coated three-dimensional graphene network (3DGN), which is then used as an electrode for high-rate, long-cycle-life supercapacitors. Using the 3DGN and nanoporous nanosheets, an ultrahigh specific capacitance (2173 F g−1 at 6 A g−1), excellent rate capability (954 F g−1 at 200 A g−1) and superior long-term cycling performance (94% capacitance retention after 14 000 cycles at 100 A g−1) are achieved.

Graphical abstract: Two-dimensional NiCo2O4 nanosheet-coated three-dimensional graphene networks for high-rate, long-cycle-life supercapacitors

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Article information


Submitted
06 Nov. 2014
Accepted
05 Janv. 2015
First published
06 Janv. 2015

Nanoscale, 2015,7, 7035-7039
Article type
Communication

Two-dimensional NiCo2O4 nanosheet-coated three-dimensional graphene networks for high-rate, long-cycle-life supercapacitors

J. Zhou, Y. Huang, X. Cao, B. Ouyang, W. Sun, C. Tan, Y. Zhang, Q. Ma, S. Liang, Q. Yan and H. Zhang, Nanoscale, 2015, 7, 7035
DOI: 10.1039/C4NR06527A

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