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Investigation on electrochemical behaviors of NiCo2O4 battery-type supercapacitor electrodes: The role of aqueous electrolyte

Abstract

Mesoporous NiCo2O4 flower-like structures are prepared successfully by facile solvothermal route. Electrochemical performances of the as-synthesized products as electrode materials for battery-type supercapacitors are systematically investigated in various concentration of potassium hydroxide (KOH) aqueous solution by cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy. NiCo2O4 supercapacitor electrode in 6 M KOH electrolyte delivers high specific capacity (122.5 C/g at 1 A/g), excellent rate performance (82.5 C/g at 10 A/g) and cycling stability (21.7% capacity loss after 6000 cycles at 2 A/g). The results show that high concentration KOH electrolyte plays an important role in improving the electrochemical performance of NiCo2O4 battery-type supercapacitor electrodes.

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Publication details

The article was received on 08 Jul 2017, accepted on 01 Aug 2017 and first published on 03 Aug 2017


Article type: Research Article
DOI: 10.1039/C7QI00391A
Citation: Inorg. Chem. Front., 2017, Accepted Manuscript
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    Investigation on electrochemical behaviors of NiCo2O4 battery-type supercapacitor electrodes: The role of aqueous electrolyte

    W. Jiang, F. Hu, Q. Yan and X. Wu, Inorg. Chem. Front., 2017, Accepted Manuscript , DOI: 10.1039/C7QI00391A

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