화학공학소재연구정보센터
Electrochimica Acta, Vol.293, 328-337, 2019
Fabrication of hierarchical NiCo2S4@CoS2 nanostructures on highly conductive flexible carbon cloth substrate as a hybrid electrode material for supercapacitors with enhanced electrochemical performance
In this study, we fabricated the hierarchical NiCo2S4@CoS2 nanostructures on highly conductive flexible carbon cloth (CC) via two-steps hydrothermal method for high-performance supercapacitor hybrid electrode material. The surface morphology of the fabricated hybrid electrode material NiCo2S4@CoS2@CC exposed the formation of hierarchical NiCo2S4 ultrathin nanosheets on CoS2 nanowires over the carbon cloth substrate and thus forming a three-dimensional interconnected porous network. During the electrochemical analysis, the hybrid NiCo2S4@CoS2 nanostructures on CC exhibited an enhanced specific capacitance of similar to 1565 F g(-1) at a current density of 1 A g(-1). A capacitance retention of similar to 91% was achieved after 8000 galvanostatic charge/discharge cycles at a current density of 1 A g(-1) and a maximum energy density of similar to 17 Wh Kg(-1) at a power density of 242.8 W K g(-1). Thus, the electrode had a significantly improved supercapacitor performance in terms of a high specific capacitance, excellent cycle stability, and good rate capability. (c) 2018 Elsevier Ltd. All rights reserved.