| Title | Lithium Nickel Cobalt Manganese Oxide Recovery Via Spray Pyrolysis Directly from The Leachate of Spent Cathode Scraps |
| Authors | 郑莹 |
| Issue Date | 2019 |
| Publisher | ACS Applied Energy Materials |
| Keywords | leachate spray pyrolysis kinetics recovery spent NCM batteries |
| Abstract | Currentlyextensive attention on reuse and recovery of spent lithiumion batteries has been paid by researchers, especially for power applicationsin electric vehicles and hybrid electric vehicles, such as lithiumnickel cobalt manganese oxide (NCM) batteries. In our work, a facileand green closed-cycle process with superior recovery efficiency ofover 98% is proposed to recycle spent NCM materials. The metal ionsare first leached out by organic acetic acid and hydrogen peroxide,and then the sphere-like NCM particles are regenerated directly fromthe leachate by self-made spray pyrolysis. The regenerated NCM exhibitsexcellent cycling retention and superior rate performance than thespent NCM and fresh NCM. The manufactured batteries display initialcapacities of 157.1 and 154.3 mAh g–1 for half andfull batteries, respectively, and exhibit better rate and cyclingperformance than those of spent NCM electrode. The investigation ofspray pyrolysis will offer an innovation idea for the recycling ofspent lithium ion batteries. |
| Appears in Collections: | 环境生物与水工程系 |
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