| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Direct Recycling of Lithium-ion Batteries Using Hydrothermal Relithiation |
| Author(s) |
Gisele Azimi, Ka Ho Chan |
| On-Site Speaker (Planned) |
Gisele Azimi |
| Abstract Scope |
Direct recycling is used for LiNi0.15Mn0.15Co0.70O2 cathode materials of spent lithium-ion batteries (LIBs) from an electric vehicle. Hydrothermal relithiation and sintering are combined to resolve the degradation issues of lithium deficiency, microcrack, and phase transformation. Hydrothermal relithiation at 220 °C for 2 h followed by sintering at 850 °C for 4 h in air, results in a discharge capacity of 151mAh g-1 at 50 mA g-1 in the first cycle with a capacity retention of 91% after 50 cycles. The hydrothermal relithiation conforms to pseudo-second-order kinetic model and Langmuir isotherm model, suggesting that the hydrothermal relithiation is mainly controlled by chemisorption and monolayer adsorption, respectively. This study presents provide valuable knowledge about hydrothermal relithiation mechanism for degraded cathodes and ushers in an alternative recycling route to pyro- and hydrometallurgy. Successful direct recycling of degraded LIBs from electric vehicles paves the path for its practical application in the LIB recycling industry. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Extraction and Processing, Recycling and Secondary Recovery |