| 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 |
Recycling of lithium-ion batteries cathode material using supercritical fluid extraction |
| Author(s) |
Gisele Azimi |
| On-Site Speaker (Planned) |
Gisele Azimi |
| Abstract Scope |
This study focuses on recycling valuable metals from NMC black mass in end-of-life lithium-ion batteries. We developed a method using supercritical carbon dioxide (SC-CO2) as a solvent, combined with a tributyl phosphate-nitric acid adduct and hydrogen peroxide as the chelating agents. Hydrogen peroxide enhances the extraction by converting metals into more soluble forms in SC-CO2. Various operational factors for supercritical fluid extraction (temperature, pressure, adduct to solid ratio, H2O2 amount) were optimized using factorial design experiments. Comprehensive analysis of samples before and after treatment provided insight into the process mechanisms. Under optimal conditions, the SCFE achieved over 90% efficiency in extracting valuable metals. This research adheres to green chemistry principles, using carbon dioxide as a safer solvent alternative to hazardous acids. Our findings present a sustainable method for recycling black mass, offering a cleaner alternative to conventional industry practices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Extraction and Processing, Recycling and Secondary Recovery |