Use of Microwave-Assisted Deep Eutectic Solvents to Recycle Lithium Manganese Oxide from Li-Ion Batteries

To realize efficient recycling of lithium manganese oxide (LMO) from spent Li-ion batteries, microwave-assisted deep-eutectic solvent (DES) treatment is proposed. The effects of the DES, temperature, time, and liquid/solid (L/S) ratio on the leaching efficiency were studied by orthogonal and single-...

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Bibliographic Details
Published in:JOM (1989) 2021-07, Vol.73 (7), p.2104-2110
Main Authors: Xu, Zhiwen, Shao, Huaishuang, Zhao, Qinxin, Liang, Zhiyuan
Format: Article
Language:English
Subjects:
Acids
Aluminum
Chemistry/Food Science
Chloride
Choline
Earth Sciences
Efficiency
Electric vehicles
Energy consumption
Engineering
Environment
Experiments
Heavy metal content
Heavy metals
Leaching
Lithium
Lithium manganese oxides
Lithium-ion batteries
Manganese oxides
Materials Recovery Considerations for Design of Next-generation Functional Materials
Oxalic acid
Physics
Rechargeable batteries
Recycling
Solvents
Temperature
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Summary:To realize efficient recycling of lithium manganese oxide (LMO) from spent Li-ion batteries, microwave-assisted deep-eutectic solvent (DES) treatment is proposed. The effects of the DES, temperature, time, and liquid/solid (L/S) ratio on the leaching efficiency were studied by orthogonal and single-factor experiments. The results of the orthogonal experiments indicated that the effects of each factor on the leaching of Li and Mn ions lay in the following order: DES > L/S ratio > temperature > time. The results of the single-factor experiments indicated that the leaching efficiencies of both Li and Mn ions reached 96% under the condition of choline chloride–oxalic acid (ChCl–OA), 15 min, 75°C, and L/S ratio of 6 g/0.1 g. Microwave-assisted DES treatment is highly efficient for recycling LMO from Li-ion batteries, greatly decreasing the leaching time from several days to less than 1 h even at 75°C in comparison with the traditional heating method.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-021-04641-x