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Issue 23, 2018
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Ionic liquid-assisted in situ growth of a cobalt oxide composite and its application in supercapacitors and electrochemical biosensors

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Abstract

Cobalt(II,III) oxide (Co3O4) nanorods/reduced graphene oxide (Co3O4 NR/RGO) composite has been successfully prepared via a reactable ionic liquid-assisted hydrothermal process and subsequent annealing. Here, the ionic liquid 1-hexadecyl-3-methylimid-azolium trifluoroacetate ([C16MIM]CF3COO) has been used as the template, co-solvent and reactant. 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. It 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).

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

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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., 2018,42, 18659-18666
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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, 42, 18659
    DOI: 10.1039/C8NJ04607G

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