|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Late News Poster Session
||N-33: A Closed-loop Recycling Process for Recovery of Critical Metals from Spent Lithium-ion Batteries through Organic Acid Leaching
||Jaeyeon Kim, Jaeheon Lee, Jiajia Wu, Jaiwon Byeon, Yoojin Kim
|On-Site Speaker (Planned)
Growing demand for valuable metals for battery materials and environmental issues from battery disposal make the recycling of spent lithium-ion batteries (LIBs) essential. Specifically, the green approaches have garnered attention for battery recycling. In this study, a novel hydrometallurgical process using mixed organic acids as an eco-friendly alternative to a process using conventional inorganic acids was applied to extract valuable metals from LiCoO2. Methanesulfonic acid (MSA) of strong organic acid and citric acid (CA) with good chelating ability were adopted as main lixiviants with H2O2 as a reducing agent. Co and Li extractions were around 95% in the optimized condition; 2.4M MSA, 1.6M CA, 1.5vol% H2O2. The Co and Li were selectively recovered as Co3O4 and LiPO4, respectively, through the precipitation processes and calcination. In addition, to develop a closed-loop recycling process, LiCoO2 and LiFePO4 cathode materials were re-synthesized using the recovered Co3O4 and LiPO4.
||Recycling and Secondary Recovery, Extraction and Processing, Hydrometallurgy