Comparative study for selective lithium recovery via chemical transformations during incineration and dynamic pyrolysis of EV li-ion batteries
Journal article, 2021

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.

Incinera-tion

Li-ion batteries

Electric vehicles

Water leaching

Pyrolysis

A combined method of recycling

Author

Srija Balachandran

Royal Institute of Technology (KTH)

Kerstin Forsberg

Royal Institute of Technology (KTH)

Tom Lemaitre

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Nuclear Chemistry

Nathalia Cristine Vieceli

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Nuclear Chemistry

Gabriele Lombardo

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Nuclear Chemistry

Martina Petranikova

Chalmers, Chemistry and Chemical Engineering, Energy and Material, Nuclear Chemistry

Metals

2075-4701 (eISSN)

Vol. 11 8 1240

Subject Categories

Chemical Process Engineering

Polymer Technologies

Materials Chemistry

DOI

10.3390/met11081240

More information

Latest update

8/13/2021