Work

Selective Recovery of Lithium from Spent Lithium-Ion Batteries via Vacuum Carbothermic Pretreatment and Controlled Carbonate Precipitation: Process Optimization and Mechanistic Study

Year: 2026

Type: article

Abstract: The growing need for lithium-ion batteries has spurred an increase in the development of effective and selective lithium extraction methods from spent battery waste. In the current work, a combined method based on vacuum carbothermic pretreatment and controlled carbonate precipitation was designed for lithium selective extraction from spent lithium-ion batteries (LIBs). The vacuum carbothermic pretreatment technique was used in order to destabilize cathode materials (LiCoO₂, LiNiMnCoO₂, and LiFePO₄) and facilitate the separation of transition metals (Co, Ni, Mn) along with increasing lithium liberation into the solid–liquid phase. The following step was lithium selective recovery in the form of lithium carbonate (Li₂CO₃) by means of controlled precipitation via addition of sodium carbonate at optimized pH, temperature, and reaction time conditions. The effect of processing parameters on the efficiency of lithium recovery, purity, and phase composition of the products was thoroughly studied. The high purity of the recovered Li₂CO₃ and complete impurity metal ion removal were proved by means of XRD and ICP-OES characterization techniques.

Source: International Journal of Scientific Bulletin

Authors: Khushvaktov, Kholbek, Abdurakhmonov, Farrukh, Togayev, Eldor, Samadiy, Murodjon

Language: English

Topic: Extraction and Separation Processes

Subfield: Metals and Alloys

Field: Materials Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Affordable and clean energy

Open Access status: diamond

OpenAlex ID: W7220170135

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