| Autor: |
Paunkumar, Ponnusamy, Sasmal, Ananta, Nayak, Arpan Kumar, Babu, Sundaram Ganesh |
| Předmět: |
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| Zdroj: |
Journal of Solid State Electrochemistry; Jul2024, Vol. 28 Issue 7, p2071-2079, 9p |
| Abstrakt: |
In this study, a facile synthesis of Cobalt oxyhydroxide (CoOOH) via the co-precipitation method at room temperature under vigorous stirring and compared the supercapacitor performance with that of manganese, aluminum, and iron oxyhydroxides. The prepared materials were confirmed by X-ray Diffraction (XRD), and Fourier Transform-Infrared Spectroscopy (FT-IR). The structural and surface area were investigated by Scanning Electron Microscopy (SEM), and Bruner-Emmert-Teller (BET) analyses. These materials were examined for their capacitance performance by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) in 1 M KOH aqueous electrolyte solution. Among these oxyhydroxides, CoOOH showed excellent capacitance than other oxyhydroxides. The CoOOH electrode exhibits a specific capacitance of 1096 F g− 1 at 25 mV s− 1 and 670 F g− 1 at 1 A g− 1 current density found from CV and GCD, respectively. Furthermore, the CoOOH electrode was investigated for cyclic stability and exhibited 91% capacitance retention after 5000 cycles. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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