2020年4月
Recovering Lithium from the Cathode Active Material in Lithium-Ion Batteries via Thermal Decomposition
METALS
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- 巻
- 10
- 号
- 4
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.3390/met10040433
- 出版者・発行元
- MDPI
In this study, calcination tests were performed on a mixed sample of lithium cobalt oxide and activated carbon at 300-1000 degrees C under an argon atmosphere. The tests were conducted to discover an effective method for recovering lithium and cobalt from the cathode active material used in lithium-ion batteries. Additionally, the effect of soluble fluorine on the purification of lithium carbonate was investigated by the addition of lithium fluoride to an aqueous lithium hydroxide solution and a CO2 flow test was performed. The lithium recovery was >= 90% when the calcination occurred at temperatures of 500-600 degrees C. However, the percent recovery decreased at temperatures >= 700 degrees C. It was demonstrated that in order to increase the recovery while maintaining 99% purity of lithium carbonate in the recovered material, it was imperative to increase the temperature of the solution and to limit the F/Li ratio (mass%/mass%) in the solution to a value that did not exceed 0.05.
- リンク情報
- ID情報
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- DOI : 10.3390/met10040433
- eISSN : 2075-4701
- Web of Science ID : WOS:000531826500012