Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 60, Issue 28, Pages 10303-10311Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.1c01151
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Funding
- National Natural Science Foundation of China [21978094]
- Open Project of State Key Laboratory of Chemical Engineering [SKL-ChE20C02]
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A novel recycling approach has been developed to regenerate valuable elements in spent lithium-ion batteries, achieving efficient recycling. The study found that using this method can recover a large amount of transition metal elements and lithium elements, and testing of NCM-r shows good performance.
With the widespread use of electric vehicles, it has attracted huge social concern to develop efficient technologies for the recycle of a large amount of spent lithium-ion batteries (LIBs) in the future. In this work, a novel recycling approach has been exploited to regenerate a ternary cathode material (LiNi0.6Co0.2Mn0.2O2) using valuable elements in spent LIBs including pretreatment, leaching, hightemperature calcination, and coprecipitation procedures. Based on the whole process analysis, above 97.9% transition-metal elements and 81.2% lithium element in the spent LIBs could be reused. The NCM-r was characterized by a series of physical and electrochemical measurements for comparison with commercial NCM-c. The initial discharge capacity of the NCM-r could reach up to 181 mA h.g(-1) (0.1C) at room temperature, and the retention of discharge capacity was 91.3% after 100 cycles. This approach is feasible for resynthesizing high nickel ternary material LiNixCoyMnzO2 from spent LIBs, contributing to both utilization of urban mine resources and sustainable industrialization.
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