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Ionic liquid-assisted in situ growth of a cobalt oxide composite and its application in supercapacitors and electrochemical biosensors

Abstract

Using the ionic liquid 1-hexadecyl-3-methylimid-azolium trifluoroacetate ([C16MIM]CF3COO) as template, co-solvent and reactant, Cobalt (II,III) oxide (Co3O4) nanorods/reduced graphene oxide (Co3O4 NR/RGO) composite has been successfully prepared via the reactable ionic liquid-assisted hydrothermal and subsequent post-annealing. Co3O4 NR/RGO can be used as the electrode material in supercapacitor applications and the non-enzymatic electrochemical detection of glucose. It has been found that the Co3O4 NR/RGO composite displays superior capacitive performance not only with high specific capacitance of 813.1 F g−1 at a current density of 1 A g−1 but also with excellent cycling stability, and can even detect glucose with a high sensitivity of 81.8 μA mM−1 and a remarkable low detection limit of 67 nM (S/N = 3).

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Publication details

The article was received on 10 Sep 2018, accepted on 11 Oct 2018 and first published on 12 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ04607G
Citation: New J. Chem., 2018, Accepted Manuscript
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    Ionic liquid-assisted in situ growth of a cobalt oxide composite and its application in supercapacitors and electrochemical biosensors

    F. Li, C. Ruan, Y. Wang and L. Lei, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04607G

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