Preparation and Characterization of NiCo2S4@NiCo2O4 Composite Electrode with 3D Network Structure

Abstract

Abstract: Supercapacitors with outstanding power density, excellent cycle stability, extremely fast rate performance and environmental friendliness have been widely studied. The performance of supercapacitors is highly dependent on the electrode materials. In this study, Ni-Co-S system was selected and composited as electrode material. Firstly, the NiCo₂O₄ electrode was prepared by hydrothermal method, and it was then transformed into NiCo₂S₄ electrode by ion exchanging method. Then, with chemical bath deposition (CBD) method, the NiCo₂S₄@NiCo₂O₄ composite electrode with 3D network structure was obtained. Further electrochemical studies (CV/Charge-Discharge curves) and SEM images confirm the better specific capacitance and cycle stability of NiCo₂S₄@NiCo₂O₄ composite electrode than that of the single component NiCo₂O₄ electrode, showing great application prospect.

Key words: supercapacitor, electrode material, 3D network structure, NiCo₂S₄, NiCo₂O₄, NiCo₂S₄@NiCo₂O₄, electrochemical performance

CLC Number:

TB383.1

QI Jiabin, QIU Feilong. Preparation and Characterization of NiCo₂S₄@NiCo₂O₄ Composite Electrode with 3D Network Structure[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(12): 2332-2338.

References

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Preparation and Characterization of NiCo₂S₄@NiCo₂O₄ Composite Electrode with 3D Network Structure

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