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Issue 24, 2015
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Cu2+ ions inducing the growth of porous Co3O4 nanospheres as high-capacity supercapacitors

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Abstract

In this study, porous Co3O4 nanospheres were controllably synthesized by applying metal Cu2+ ions as structure-inducing agents. The growth of the Co3O4 nanostructures was induced by the metal ions without the addition of any surfactants. The porous Co3O4 nanospheres were composed of nanosheets. When used as electrode materials in a supercapacitor, the porous Co3O4 nanospheres exhibited a much better capacity of 246.7 F g−1 than commercial Co3O4 powder at a current density of 0.5 A g−1, maintaining 86% of the initial capacity at a current density of 1 A g−1 after 500 cycles. Such high performance can be attributed to the desirable morphology. The results manifest that porous Co3O4 nanospheres composed of nanosheets are promising electrode materials for supercapacitors.

Graphical abstract: Cu2+ ions inducing the growth of porous Co3O4 nanospheres as high-capacity supercapacitors

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Article information


Submitted
03 Apr 2015
Accepted
10 May 2015
First published
11 May 2015

CrystEngComm, 2015,17, 4449-4454
Article type
Paper
Author version available

Cu2+ ions inducing the growth of porous Co3O4 nanospheres as high-capacity supercapacitors

R. Liu, Z. Jiang, Q. Liu, X. Zhu and W. Chen, CrystEngComm, 2015, 17, 4449
DOI: 10.1039/C5CE00658A

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