| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
REWAS 2025: Sustainable End-of-Life Management and Recycling Solutions for Batteries, Wind Turbines, and Photovoltaics
|
| Presentation Title |
Optimizing Early-Stage Lithium Recovery: Investigating Oxalic Acid Leaching of Black Mass from End-of-Life NMC 622 Batteries |
| Author(s) |
Luka Nils Mettke, Bengi Yagmurlu |
| On-Site Speaker (Planned) |
Luka Nils Mettke |
| Abstract Scope |
The increasing demand for lithium ion batteries, especially in electrical vehicles, highlight the need for efficient and green recycling processes for the recovery of critical raw materials like lithium. Traditional late-stage lithium (LSL) recycling faces challenges, including material losses and complex recovery processes. Early-stage lithium (ESL) recovery offers a promising approach to enhance recycling efficiency and producing a product with reduced losses. This study investigates a hydrometallurgical approach for the early stage lithium recovery with oxalic acid from black mass derived from spent NMC 622 batteries. The leaching efficiency, leaching mechanism and possible purification and recovery strategies are investigated and presented yielding in a possible lithium product for resynthesis. The findings indicate, that oxalic acid significantly enhances leaching efficiency, resulting in high leaching rates. This research highlights the potential of early-stage lithium recovery for sustainable CRM extraction and innovative recycling technologies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Hydrometallurgy, Recycling and Secondary Recovery, |