4.7 Article

Leaching valuable metals from spent lithium-ion batteries using the reducing agent methanol

Journal

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 30, Issue 2, Pages 4258-4268

Publisher

SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-22414-0

Keywords

Spent cathode materials; Recycling; Leaching; Methanol; Kinetics

Ask authors/readers for more resources

Salvaging valuable metals from cathode materials of spent lithium-ion batteries is a promising strategy for green and sustainable development. The use of methanol as a reducing agent for the acid leaching of cathode materials allows efficient extraction of cobalt and lithium. The leaching process is diffusion-controlled, and methanol is transformed into formic acid to enhance leaching.
When considering resource shortages and environmental pressures, salvaging valuable metals from the cathode materials of spent lithium-ion batteries (LIBs) is a very promising strategy to realize the green and sustainable development of batteries. The reductive acid leaching of valuable metals from cathode materials using methanol as a reducing agent was studied. The results show that the leaching efficiencies of Co and Li are 99% under optimal leaching conditions. The leaching kinetics of cathode materials in a H2SO4-methanol system indicate that the leaching of Co and Li is controlled by diffusion, with activation energies of 69.98 and 10.78 kJ/mol, respectively. Detailed analysis of the leaching reaction mechanism indicates that methanol is ultimately transformed into formic acid through a two-step process to further enhance leaching. No side reactions occur during leaching. Methanol can be a sustainable alternative for the reductive acid leaching of valuable metals from spent LIBs due to its high efficiency, application maturity, environmental friendliness, and low cost.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available