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

Fajun Li; Chaohui Ruan; Yang Wang; Lixu Lei

doi:10.1039/c8nj04607g

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

Fajun Li, Chaohui Ruan, Yang Wang, Lixu Lei^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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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).

Original language	English
Pages (from-to)	18659-18666
Number of pages	8
Journal	New journal of chemistry
Volume	42
Issue number	23
DOIs	https://doi.org/10.1039/c8nj04607g
Publication status	Published - 2018

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n/a OA procedure

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title = "Ionic liquid-assisted: In situ growth of a cobalt oxide composite and its application in supercapacitors and electrochemical biosensors",

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).",

keywords = "n/a OA procedure",

author = "Fajun Li and Chaohui Ruan and Yang Wang and Lixu Lei",

note = "Funding Information: This work is supported by the Fundamental Research Funds for the Central Universities (3207047452) and the Priority Academic Program Development of Jiangsu Higher Education Institutions. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2018.",

year = "2018",

doi = "10.1039/c8nj04607g",

language = "English",

volume = "42",

pages = "18659--18666",

journal = "New journal of chemistry",

issn = "1144-0546",

publisher = "Royal Society of Chemistry",

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T1 - Ionic liquid-assisted

T2 - In situ growth of a cobalt oxide composite and its application in supercapacitors and electrochemical biosensors

AU - Li, Fajun

AU - Ruan, Chaohui

AU - Wang, Yang

AU - Lei, Lixu

N1 - Funding Information: This work is supported by the Fundamental Research Funds for the Central Universities (3207047452) and the Priority Academic Program Development of Jiangsu Higher Education Institutions. Publisher Copyright: © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2018.

PY - 2018

Y1 - 2018

N2 - 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).

AB - 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).

KW - n/a OA procedure

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DO - 10.1039/c8nj04607g

M3 - Article

AN - SCOPUS:85057060986

SN - 1144-0546

VL - 42

SP - 18659

EP - 18666

JO - New journal of chemistry

JF - New journal of chemistry

IS - 23

ER -

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

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