Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7738095 | Journal of Power Sources | 2014 | 7 Pages |
Abstract
Li-rich layered oxide Li1.2Co0.13Ni0.13Mn0.54O2 has been successfully re-synthesized using the ascorbic acid leaching solution of spent lithium-ion batteries as the raw materials. A combination of oxalic acid co-precipitation, hydrothermal and calcination processes was applied to synthesize this material. For comparison, a fresh sample with the same composition has been also synthesized from the commercial raw materials using the same method. X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and electrochemical measurements are carried out to characterize these samples. XRD results indicate that both samples have the layered α-NaFeO2 structures with a space group of R3¯m. No other crystalline phase was detected by XRD. The electrochemical results show that the re-synthesized and fresh-synthesized sample can deliver discharge capacities as high as 258.8 and 264.2 mAh gâ1 at the first cycle, respectively. After 50 cycles, discharge capacities of 225.1 and 228 mAh gâ1 can be obtained with capacity retention of 87.0 and 86.3%, respectively. This study suggests that the leaching solution from spent lithium ion batteries can be recycled to synthesize Li-rich cathode materials with good electrochemical performance.
Related Topics
Physical Sciences and Engineering
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Authors
Li Li, Xiaoxiao Zhang, Renjie Chen, Taolin Zhao, Jun Lu, Feng Wu, Khalil Amine,