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DOE OSTI · 2542520

Relithiation process for direct regeneration of cathode materials from spent lithium-ion batteries

Belharouak, Ilias·Bai, Yaocai·Essehli, Rachid·Li, Jianlin
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Abstract

A method for the regeneration of cathode material from spent lithium-ion batteries is provided. The method includes dissolving a lithium precursor in a polyhydric alcohol to form a solution. Degraded cathode material containing lithium metal oxides are dispersed into the solution under mechanical stirring, forming a mixture. The mixture is heat treated within a reactor vessel or microwave oven. During this heat treatment, lithium is intercalated into the degraded cathode material. The relithiated electrode material is collected by filtration, washing with solvents, and drying. The relithiated electrode material is then ground with a lithium precursor and thermally treated at a relatively low temperature for a predetermined time period to obtain regenerated cathode material.

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Belharouak, Ilias, Bai, Yaocai, Essehli, Rachid, Li, Jianlin. 2024-08-20. Relithiation process for direct regeneration of cathode materials from spent lithium-ion batteries. https://www.osti.gov/biblio/2542520

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