Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors
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<sub>2</sub> nanoarchitectures syn...
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MDPI AG
2021-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/16/4925 |
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| author | Ikkurthi Kanaka Durga Kummara Venkata Guru Raghavendra Naga Bhushanam Kundakarla Suresh Alapati Jin-Woo Ahn Sunkara Srinivasa Rao |
| author_facet | Ikkurthi Kanaka Durga Kummara Venkata Guru Raghavendra Naga Bhushanam Kundakarla Suresh Alapati Jin-Woo Ahn Sunkara Srinivasa Rao |
| author_sort | Ikkurthi Kanaka Durga |
| collection | DOAJ |
| 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<sub>2</sub> nanoarchitectures synthesized on the surface of Ni foams employing the cost-effective hydrothermal route. The Zno/CoS<sub>2</sub> 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<sub>2</sub> 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<sub>2</sub> nanostructures depicted an excellent specific capacity of 400.25 C·g<sup>−1</sup> at 1 A·g<sup>−1</sup>, with a predominant cycling capacity of 88. 2% and retention holding of 68% at 10 A·g<sup>−1</sup> and 2 A·g<sup>−1</sup>, even after 4000 cycles, representing an improvement compared to the pristine ZnO and CoS<sub>2</sub> electroactive materials. Therefore, the electrochemical and morphological analyses suggest the excellent behavior of the ZnO/CoS<sub>2</sub> nanoarchitectures, making them promising for supercapacitors. |
| first_indexed | 2024-03-10T08:51:59Z |
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| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T08:51:59Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-bf1ed5f86a2748f3ac9a8c41ed48d31a2023-11-22T07:29:23ZengMDPI AGEnergies1996-10732021-08-011416492510.3390/en14164925Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance SupercapacitorsIkkurthi Kanaka Durga0Kummara Venkata Guru Raghavendra1Naga Bhushanam Kundakarla2Suresh Alapati3Jin-Woo Ahn4Sunkara Srinivasa Rao5School of Mechanical and Mechatronics Engineering, Kyungsung University, 309 Suyeong-ro Nam-gu, Busan 48434, KoreaRAK Research and Innovation Center, American University of RAS Al Khaimah, RAK P.O. Box 10021, United Arab EmiratesDepartment of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, WI 53201, USASchool of Mechanical and Mechatronics Engineering, Kyungsung University, 309 Suyeong-ro Nam-gu, Busan 48434, KoreaSchool of Mechanical and Mechatronics Engineering, Kyungsung University, 309 Suyeong-ro Nam-gu, Busan 48434, KoreaSchool of Mechanical and Mechatronics Engineering, Kyungsung University, 309 Suyeong-ro Nam-gu, Busan 48434, KoreaNanocomposite 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<sub>2</sub> nanoarchitectures synthesized on the surface of Ni foams employing the cost-effective hydrothermal route. The Zno/CoS<sub>2</sub> 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<sub>2</sub> 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<sub>2</sub> nanostructures depicted an excellent specific capacity of 400.25 C·g<sup>−1</sup> at 1 A·g<sup>−1</sup>, with a predominant cycling capacity of 88. 2% and retention holding of 68% at 10 A·g<sup>−1</sup> and 2 A·g<sup>−1</sup>, even after 4000 cycles, representing an improvement compared to the pristine ZnO and CoS<sub>2</sub> electroactive materials. Therefore, the electrochemical and morphological analyses suggest the excellent behavior of the ZnO/CoS<sub>2</sub> nanoarchitectures, making them promising for supercapacitors.https://www.mdpi.com/1996-1073/14/16/4925ZnO/CoS<sub>2</sub>/NF nanostructuressupercapacitorscyclic voltammetrygalvanostatic charge–dischargeelectrochemical impedance spectroscopy |
| spellingShingle | Ikkurthi Kanaka Durga Kummara Venkata Guru Raghavendra Naga Bhushanam Kundakarla Suresh Alapati Jin-Woo Ahn Sunkara Srinivasa Rao Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors Energies ZnO/CoS<sub>2</sub>/NF nanostructures supercapacitors cyclic voltammetry galvanostatic charge–discharge electrochemical impedance spectroscopy |
| title | Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors |
| title_full | Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors |
| title_fullStr | Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors |
| title_full_unstemmed | Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors |
| title_short | Facile Synthesis of Coral Reef-Like ZnO/CoS<sub>2</sub> Nanostructure on Nickel Foam as an Advanced Electrode Material for High-Performance Supercapacitors |
| title_sort | facile synthesis of coral reef like zno cos sub 2 sub nanostructure on nickel foam as an advanced electrode material for high performance supercapacitors |
| topic | ZnO/CoS<sub>2</sub>/NF nanostructures supercapacitors cyclic voltammetry galvanostatic charge–discharge electrochemical impedance spectroscopy |
| url | https://www.mdpi.com/1996-1073/14/16/4925 |
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