Abstract
Electrochemical supercapacitor is valid and as an innovative type of energy storage device in the recent years. In this study, we successfully produced the CoWO4 nanoparticles and CoWO4/MWCNT nanocomposites using a straightforward hydrothermal method and an annealing procedure. The created nanocomposites are evaluated using high-resolution field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD). Additionally, the electrical conductivity is determined using electrochemical impedance spectroscopy (EIS) further, the specific capacitance is determined using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) techniques. Higher electrochemical behavior is exhibited by the CoWO4/MWCNT composite electrode, delivers the capacitance of 543 F/g at 5 mV/ s. The CoWO4/MWCNT composite electrode demonstrates the exceptional 93 % cycle stability and 98 % coloumbic efficiency, showing better ion storage behavior in their huge electroactive areas. A possible source of electrode materials for supercapacitor applications has been found in this CoWO4/MWCNT composite due to its charge-storing capabilities.
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