Facile synthesis of highly efficient construction of tungsten disulfide/iron cobaltite nanocomposite grown on nickel foam as a battery-type energy material for electrochemical supercapacitors with superior performance

In this research literature, a tungsten disulfide/iron cobaltite (WS2/FeCo2O4) interwoven construction array was prepared by a simplistic hydrothermal approach on Ni foam as an integrative electrode for supercapacitors (SCs). For characterization of the wearing of WS2 nanostructure on FeCo2O4 nanosheets (WS2/FeCo2O4) by the Scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The WS2/FeCo2O4 nanosheets supply a larger surface region and sufficient space to allow for volume changes. Moreover, considerable features of wellbeing conductivity from the Ni foam conductor and the synergistic procedures between WS2 and FeCo2O4, the integrated WS2/FeCo2O4 composite achieved prominent SCs storage performances with a higher specific capacity of 1122C g(-1) (2492.9F g(-1)) at 1 A g(-1) and notable capacity retention of 98.1% at 3 A g(-1) after 5000 long cycles and retained higher rate capacity of 951.9 C g(-1) at 15 A g(-1). For practical application, an asymmetric supercapacitors type WS2/FeCo2O4//active carbon (WS2/FeCo2O4//AC) device was successfully prepared. The WS2/FeCo2O4//AC device displays a higher specific capacity of 110C g(-1) and energy density of 85.68Wh kg(-1) at power density at 897.65Wkg(-1), as well as the superior initial capacitance of 98.7% with cyclic stabilities after 4000 long cycles. Thus, these results indicated the great potential of the constructed WS2/FeCo2O4//AC in the scenario electrochemical properties due to their outstanding energy storage activities. (C) 2021 Elsevier Inc. All rights reserved.

Automated summary

In this research, a tungsten disulfide/iron cobaltite interwoven construction array was prepared and used as an integrative electrode for supercapacitors. The WS2/FeCo2O4 nanosheets provided a larger surface area and sufficient space for volume changes, leading to prominent energy storage performances in the supercapacitors.