Abstract
Selective leaching of Li from spent LIBs thermally pretreated by pyrolysis and incineration between 400 and 700 °C for 30, 60, and 90 min followed by water leaching at high temperature and high L/S ratio was examined. During the thermal pretreatment Li2CO3 and LiF were leached. Along with Li salts, AlF3 was also found to be leached with an efficiency not higher than 3.5%. The time of thermal pretreatment did not have a significant effect on Li leaching efficiency. The leaching efficiency of Li was higher with a higher L/S ratio. At a higher leaching temperature (80 °C), the leaching of Li was higher due to an increase in the solubility of present Li salts. The highest Li leaching efficiency of nearly 60% was observed from the sample pyrolyzed at 700 °C for 60 min under the leaching condition L/S ratio of 20:1 mL g−1 at 80 °C for 3 h. Furthermore, the use of an excess of 10% of carbon in a form of graphite during the thermal treatment did not improve the leaching efficiency of Li.
Highlights
The average life span of Li-ion batteries (LIBs) in electric vehicles (EVs) is expected to be around 8–10 years
To address the shortcomings related to Li recycling, combined methods to extract Li selectively before extraction of other valuable metals from spent LIBs are found to be a promising route, including for example thermal treatment followed by water leaching
This work further investigates the comparative study for selective Li recovery from mixed cathode and anode materials of LiNi1/3 Mn1/3 Co1/3 O2 (NMC111) batteries by water leaching exposed to incineration and pyrolysis pretreatments and analyzes the behavior of impurities
Summary
The average life span of Li-ion batteries (LIBs) in electric vehicles (EVs) is expected to be around 8–10 years. To address the shortcomings related to Li recycling, combined methods to extract Li selectively before extraction of other valuable metals from spent LIBs are found to be a promising route, including for example thermal treatment followed by water leaching. In this context, the aim of this work is to investigate selective leaching of Li from thermally pretreated waste batteries with water as a leaching agent at high temperature and high. This work further investigates the comparative study for selective Li recovery from mixed cathode and anode materials of LiNi1/3 Mn1/3 Co1/3 O2 (NMC111) batteries by water leaching exposed to incineration and pyrolysis pretreatments and analyzes the behavior of impurities. LiNiO2 is converted to Ni, Li2 CO3 , Li2 O, NiO, CO, and CO2 according to Equations (23)–(27)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.