Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications
In this paper, wet-chemically synthesized hierarchical NiO microspheres and their exfoliated (ExC)-based nanocomposites (NiO/ExC) as electrodes for supercapacitor applications have been reported. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and Scanning electron microscopi...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Journal of Taibah University for Science |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/16583655.2022.2083361 |
| _version_ | 1818469997603717120 |
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| author | Mahnoor Akhtar Sabeera Rafiq Muhammad Farooq Warsi Salah M. El-Bahy Mahmoud M. Hessien Gaber A. M. Mersal Mohamed M. Ibrahim Muhammad Shahid |
| author_facet | Mahnoor Akhtar Sabeera Rafiq Muhammad Farooq Warsi Salah M. El-Bahy Mahmoud M. Hessien Gaber A. M. Mersal Mohamed M. Ibrahim Muhammad Shahid |
| author_sort | Mahnoor Akhtar |
| collection | DOAJ |
| description | In this paper, wet-chemically synthesized hierarchical NiO microspheres and their exfoliated (ExC)-based nanocomposites (NiO/ExC) as electrodes for supercapacitor applications have been reported. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and Scanning electron microscopic (SEM) techniques were used to characterize the as-synthesized products. The study of PXRD revealed that NiO exhibits a cubic phase. Morphological analysis showed a hierarchical micro-spherical structure of mesoporous NiO particles. The as-synthesized hierarchically porous NiO manifested a specific capacitance of 331 F/g with 50% capacitance retention. But, exfoliated carbon (ExC)-based nanocomposite (0.07 g NiO/0.003 g ExC) showed a particular capacitance of 815 F/g at the scan rate of 5 mV/s, with 79% retention in capacitance. High electrical conductivity and larger surface area arising from synergistic effects between NiO and exfoliated carbon resulted in a tremendous electrochemical response of NiO/ExC nanocomposites. The inclusion of the ExC further improves electrical impedance spectroscopic results by facilitating the charge transfer. |
| first_indexed | 2024-04-13T21:32:02Z |
| format | Article |
| id | doaj.art-e8b11ae77e3d40a4a7100357049551af |
| institution | Directory Open Access Journal |
| issn | 1658-3655 |
| language | English |
| last_indexed | 2024-04-13T21:32:02Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Taibah University for Science |
| spelling | doaj.art-e8b11ae77e3d40a4a7100357049551af2022-12-22T02:29:09ZengTaylor & Francis GroupJournal of Taibah University for Science1658-36552022-12-0116157558410.1080/16583655.2022.2083361Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applicationsMahnoor Akhtar0Sabeera Rafiq1Muhammad Farooq Warsi2Salah M. El-Bahy3Mahmoud M. Hessien4Gaber A. M. Mersal5Mohamed M. Ibrahim6Muhammad Shahid7Institute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, PakistanInstitute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, PakistanInstitute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur, PakistanDepartment of Chemistry, Turabah University College, Taif University, Taif, Saudi ArabiaDepartment of Chemistry, College of Science, Taif University, Taif, Saudi ArabiaDepartment of Chemistry, College of Science, Taif University, Taif, Saudi ArabiaDepartment of Chemistry, College of Science, Taif University, Taif, Saudi ArabiaDepartment of Chemistry, College of Science, University of Hafr Al Batin, Hafr Al-Batin, Saudi ArabiaIn this paper, wet-chemically synthesized hierarchical NiO microspheres and their exfoliated (ExC)-based nanocomposites (NiO/ExC) as electrodes for supercapacitor applications have been reported. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and Scanning electron microscopic (SEM) techniques were used to characterize the as-synthesized products. The study of PXRD revealed that NiO exhibits a cubic phase. Morphological analysis showed a hierarchical micro-spherical structure of mesoporous NiO particles. The as-synthesized hierarchically porous NiO manifested a specific capacitance of 331 F/g with 50% capacitance retention. But, exfoliated carbon (ExC)-based nanocomposite (0.07 g NiO/0.003 g ExC) showed a particular capacitance of 815 F/g at the scan rate of 5 mV/s, with 79% retention in capacitance. High electrical conductivity and larger surface area arising from synergistic effects between NiO and exfoliated carbon resulted in a tremendous electrochemical response of NiO/ExC nanocomposites. The inclusion of the ExC further improves electrical impedance spectroscopic results by facilitating the charge transfer.https://www.tandfonline.com/doi/10.1080/16583655.2022.2083361Microspheresexfoliated carbonsupercapacitorspecific capacitanceporous structure |
| spellingShingle | Mahnoor Akhtar Sabeera Rafiq Muhammad Farooq Warsi Salah M. El-Bahy Mahmoud M. Hessien Gaber A. M. Mersal Mohamed M. Ibrahim Muhammad Shahid Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications Journal of Taibah University for Science Microspheres exfoliated carbon supercapacitor specific capacitance porous structure |
| title | Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications |
| title_full | Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications |
| title_fullStr | Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications |
| title_full_unstemmed | Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications |
| title_short | Hierarchically porous NiO microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications |
| title_sort | hierarchically porous nio microspheres and their nanocomposites with exfoliated carbon as electrode materials for supercapacitor applications |
| topic | Microspheres exfoliated carbon supercapacitor specific capacitance porous structure |
| url | https://www.tandfonline.com/doi/10.1080/16583655.2022.2083361 |
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