| Title |
Study on the Supercapacitor Electrode Characteristics of W, Nb, Mo Oxides |
| Authors |
윤대한(Dae-han Youn) ; (Vaibhav. C. Lokhande) ; 지택수(Taeksoo Ji) |
| DOI |
https://doi.org/10.5573/ieie.2023.60.5.3 |
| Keywords |
Supercapacitor; Pseudocapacitor; Energy storage device; Transition metal oxide |
| Abstract |
This study examines the electrode material of a supercapacitor using a transition metal oxide as pseudo-capacitors. Precursors of tungsten (W), niobium (Nb), molybdenum (Mo) and iron(Fe) were mixed to synthesize them using hydrothermal synthesis method, and electrochemical properties were analyzed by depositing them on carbon cloth. In a 1M H2SO4 electrolyte, specific capacity was calculated by evaluating electrochemical characteristics through cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). In addition, properties of sample materials were analyzed through X-ray diffraction analysis (XRD) and X-ray spectroscopy (XPS), and through Field emission scanning electron microscope (FE-SEM) images. As a result of the analysis, Fe did not participate in the binding, and it was found that WO3, Nb2O5, and MoO3 accounted for 18.32%, 6.94%, and 74.74% respectively, through XRF analysis. The specific capacitance was calculated through GCD and it showed a good value 375A/g in 1A/g of current density. |