Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application
In this study, we report on the fabrication and characterization of cobalt oxide (Co3O4) thin film that is potentially important for electrochemical capacitor applications. For that purpose, the precursor powder of Co3O4 was prepared using the cost-effective sol-gel synthesis route and heat treatmen...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Current Research in Green and Sustainable Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666086522000078 |
| _version_ | 1811297206598107136 |
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| author | Paresh S. Gaikar Ankita P. Angre Gurumeet Wadhawa Pankaj V. Ledade Sami H. Mahmood Trimurti L. Lambat |
| author_facet | Paresh S. Gaikar Ankita P. Angre Gurumeet Wadhawa Pankaj V. Ledade Sami H. Mahmood Trimurti L. Lambat |
| author_sort | Paresh S. Gaikar |
| collection | DOAJ |
| description | In this study, we report on the fabrication and characterization of cobalt oxide (Co3O4) thin film that is potentially important for electrochemical capacitor applications. For that purpose, the precursor powder of Co3O4 was prepared using the cost-effective sol-gel synthesis route and heat treatment at a relatively low temperature. A thin film of Co3O4 was prepared on a fluorine-doped tin oxide (FTO) substrate using a simple doctor-blade method. X-ray diffraction and Raman spectroscopy confirmed the formation of pure Co3O4 thin film on FTO, and scanning and transmission electron microscopy confirmed the nanoscale nature of the particles in the film. The electrochemical studies revealed a specific capacitance of 237 F g-1 for the Co3O4 electrode, with a remarkable cycling stability in 1 M NaOH electrolyte, and 77% capacity retention after 2000 cycles at 5 mA cm-2 current density (833 mA g-1); this demonstrates that Co3O4 is a promising material for electrochemical devices. Further, the electrochemical impedance measurements revealed an internal (solution) of 10 Ω, whereas the charge transfer resistance between the electrode and the electrolyte was roughly 40 Ω. |
| first_indexed | 2024-04-13T06:00:46Z |
| format | Article |
| id | doaj.art-ae217f372ca74f81b7daaeeeccdde4ba |
| institution | Directory Open Access Journal |
| issn | 2666-0865 |
| language | English |
| last_indexed | 2024-04-13T06:00:46Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Current Research in Green and Sustainable Chemistry |
| spelling | doaj.art-ae217f372ca74f81b7daaeeeccdde4ba2022-12-22T02:59:27ZengElsevierCurrent Research in Green and Sustainable Chemistry2666-08652022-01-015100265Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor applicationParesh S. Gaikar0Ankita P. Angre1Gurumeet Wadhawa2Pankaj V. Ledade3Sami H. Mahmood4Trimurti L. Lambat5Department of Physics, Rayat Shikshan Sanstha’s Karmaveer Bhaurao Patil College Vashi, Navi Mumbai, 400703, Maharashtra, IndiaDepartment of Physics, Ramnarain Ruia Autonomous College, Matunga, Mumbai, 400019, Maharashtra, IndiaDepartment of Chemistry, Rayat Shikshan Sanstha’s Karmaveer Bhaurao Patil College Vashi, Navi Mumbai, 400703, Maharashtra, IndiaDepartment of Chemistry, Yashwantrao Chawhan Arts, Commerce & Science College, Lakhandur, Bhandara, 441803, Maharashtra, IndiaDepartment of Physics, The University of Jordan, Amman, 11942, JordanDepartment of Chemistry, Manoharbhai Patel College of Arts, Commerce & Science, Deori Dist- Gondia, 441901, Maharashtra, India; Corresponding author.In this study, we report on the fabrication and characterization of cobalt oxide (Co3O4) thin film that is potentially important for electrochemical capacitor applications. For that purpose, the precursor powder of Co3O4 was prepared using the cost-effective sol-gel synthesis route and heat treatment at a relatively low temperature. A thin film of Co3O4 was prepared on a fluorine-doped tin oxide (FTO) substrate using a simple doctor-blade method. X-ray diffraction and Raman spectroscopy confirmed the formation of pure Co3O4 thin film on FTO, and scanning and transmission electron microscopy confirmed the nanoscale nature of the particles in the film. The electrochemical studies revealed a specific capacitance of 237 F g-1 for the Co3O4 electrode, with a remarkable cycling stability in 1 M NaOH electrolyte, and 77% capacity retention after 2000 cycles at 5 mA cm-2 current density (833 mA g-1); this demonstrates that Co3O4 is a promising material for electrochemical devices. Further, the electrochemical impedance measurements revealed an internal (solution) of 10 Ω, whereas the charge transfer resistance between the electrode and the electrolyte was roughly 40 Ω.http://www.sciencedirect.com/science/article/pii/S2666086522000078Sol-gelCobalt oxideElectrochemical capacitorThin film |
| spellingShingle | Paresh S. Gaikar Ankita P. Angre Gurumeet Wadhawa Pankaj V. Ledade Sami H. Mahmood Trimurti L. Lambat Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application Current Research in Green and Sustainable Chemistry Sol-gel Cobalt oxide Electrochemical capacitor Thin film |
| title | Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application |
| title_full | Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application |
| title_fullStr | Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application |
| title_full_unstemmed | Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application |
| title_short | Green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application |
| title_sort | green synthesis of cobalt oxide thin films as an electrode material for electrochemical capacitor application |
| topic | Sol-gel Cobalt oxide Electrochemical capacitor Thin film |
| url | http://www.sciencedirect.com/science/article/pii/S2666086522000078 |
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