Preparation of Modified NiCo2S4@C Materials Suitable for Supercapacitor Electrodes by One-Pot Solvothermal Method
In order to obtain higher multiplicity performance and cycling stability of nickel cobalt sulfide (NiCo2S4) as supercapacitor electrode material, NiCo2S4@C was prepared by hydrothermally coating a conductive carbon layer on the core NiCo2S4 with the addition of glucose, which prevented the aggregation of NiCo2S4 and formed more micropores, resulting in a relatively large specific surface area. The prepared NiCo2S4@C showed a good multiplicative performance with a specific capacitance of 1587.8 Fg-1 at 1 Ag-1 and up to 1162.5 Fg-1 (10 Ag-1). In addition, its capacity retention rate was 96.2％ after 2000 cycles.
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