A Study on the Prior Leaching and Recovery of Lithium from the Spent LiFePO4 Cathode Powder Using Strong Organic Acid 


Vol. 30,  No. 2, pp. 105-112, Jun.  2024
10.7464/ksct.2024.30.2.105


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  Abstract

Globally, the demand for electric vehicles has surged due to greenhouse gas regulations related to climate change, leading to an increase in the production of used batteries as a consequence of the battery life issue. This study aims to selectively leach and recover valuable metal lithium from the cathode material of spent LFP (LiFePO4) batteries among lithium-ion batteries. Generally, the use of inorganic acids results in the emission of toxic gases or the generation of large quantities of wastewater, causing environmental issues. To address this, research is being conducted to leach lithium using organic acids and other leaching agents. In this study, selective leaching was performed using the organic acid methane sulfonic acid (MSA, CH3SO3H). Experiments were conducted to determine the optimal conditions for selectively leaching lithium by varying the MSA concentration, pulp density, and hydrogen peroxide dosage. The results of this study showed that lithium was leached at approximately 100%, while iron and phosphorus components were leached at about 1%, verifying the leaching efficiency and the leaching rates of the main components under different variables.

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  Cite this article

[IEEE Style]

D. Kim, S. Ban, H. Kim, J. Ahn, "A Study on the Prior Leaching and Recovery of Lithium from the Spent LiFePO4 Cathode Powder Using Strong Organic Acid," Clean Technology, vol. 30, no. 2, pp. 105-112, 2024. DOI: 10.7464/ksct.2024.30.2.105.

[ACM Style]

Dae-Weon Kim, Soo-Hyun Ban, Hee-Seon Kim, and Jun-Mo Ahn. 2024. A Study on the Prior Leaching and Recovery of Lithium from the Spent LiFePO4 Cathode Powder Using Strong Organic Acid. Clean Technology, 30, 2, (2024), 105-112. DOI: 10.7464/ksct.2024.30.2.105.

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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