Magnetic Electrodeposition of the Hierarchical Cobalt Oxide Nanostructure from Spent Lithium-Ion Batteries: Its Application as a Supercapacitor Electrode
In this study, electrodeposition of cobalt oxide (Co3O4) from spent lithium-ion batteries is successfully enhanced by the magnetic field effect. In the presence of magnetic field, well-defined hierarchical Co3O4 nanostructures with higher electroactive surface area are formed during the electrodepos...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Chemical Society
2018
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/22152/ http://umpir.ump.edu.my/id/eprint/22152/ http://umpir.ump.edu.my/id/eprint/22152/ http://umpir.ump.edu.my/id/eprint/22152/1/Magnetic%20Electrodeposition%20of%20the%20Hierarchical.pdf |
| Summary: | In this study, electrodeposition of cobalt oxide (Co3O4) from spent lithium-ion batteries is successfully enhanced by the magnetic field effect. In the presence of magnetic field, well-defined hierarchical Co3O4 nanostructures with higher electroactive surface area are formed during the electrodeposition process. Electrochemical analysis shows that the enhanced Co3O4 nanostructures exhibit excellent charge storage capabilities of 1273 F g–1 at 1 A g–1, approximately 4 times higher than the electrodeposited Co3O4 that is formed without magnetic field effect. It also reveals the high cycling stability of enhanced Co3O4 nanostructures, with 96% capacitance retention at 5000 charge discharge cycles. The results manifest the enhancement of Co3O4 recovery from spent lithium-ion batteries, which can be the potential electrode material for supercapacitor application. |
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