期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 122, 期 23, 页码 12200-12206出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.8b03306
关键词
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资金
- Ministry of Education Malaysia FRGS [RDU160118: FRGS/1/2016/STG07/UMP/02/3]
- Universiti Malaysia Pahang [RDU170357]
- Deanship of Scientific Research at King Khalid University [RG.P.2/2/38]
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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