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Facile Synthesis of Coral Reef-Like $ZnO/CoS_{2}$ Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors
| Content Provider | MDPI |
|---|---|
| Author | Durga, Ikkurthi Kanaka Raghavendra, Kummara Venkata Guru Kundakarla, Naga Bhushanam Alapati, Suresh Ahn, Jin-Woo Rao, Sunkara Srinivasa |
| Copyright Year | 2021 |
| Description | Nanocomposite electrodes receive much attention because of their excellent energy storage nature. Electrodes for supercapacitors have come a major source of interest. In this pursuit, the current work elucidates binder-free coral reefs resembling $ZnO/CoS_{2}$ nanoarchitectures synthesized on the surface of Ni foams employing the cost-effective hydrothermal route. The $Zno/CoS_{2}$ nanocomposite demonstrated excellent battery-type behavior, which can be employed for supercapcitor application. Various analyses were carried out in the current study, such as X-ray diffraction and high-resolution scanning electron microscopy, which allowed defining the crystalline nature and morphology of surface with $ZnO/CoS_{2}$ nanoarchitectures. Electrochemical measures such as cyclic voltammetry, galvanostatic charge discharge, and potentiostatic impedance spectroscopy confirmed the battery-type behavior of the material. The synthesized precursors of binder-free $ZnO/CoS_{2}$ nanostructures depicted an excellent specific capacity of 400.25 $C·g^{−1}$ at 1 $A·g^{−1}$, with a predominant cycling capacity of 88. 2% and retention holding of 68% at 10 $A·g^{−1}$ and 2 $A·g^{−1}$, even after 4000 cycles, representing an improvement compared to the pristine ZnO and $CoS_{2}$ electroactive materials. Therefore, the electrochemical and morphological analyses suggest the excellent behavior of the $ZnO/CoS_{2}$ nanoarchitectures, making them promising for supercapacitors. |
| Starting Page | 4925 |
| e-ISSN | 19961073 |
| DOI | 10.3390/en14164925 |
| Journal | Energies |
| Issue Number | 16 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-08-11 |
| Access Restriction | Open |
| Subject Keyword | Energies Electrochemistry Zno/cos2/nf Nanostructures Supercapacitors Cyclic Voltammetry Galvanostatic Charge–discharge Electrochemical Impedance Spectroscopy |
| Content Type | Text |
| Resource Type | Article |
