| 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
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| Presentation Title |
A preliminary study on the recycling of oxide-based solid-state electrolytes |
| Author(s) |
Hyunjoon Lee, Hyunju Lee, Mooki Bae, Jongwon Choi, Sookyung Kim |
| On-Site Speaker (Planned) |
Hyunjoon Lee |
| Abstract Scope |
Currently, lithium secondary batteries are representative eco-friendly energy around the world, but they have problems with low stability such as explosion and ignition. As All-solid state batteries are being discussed as promising next-generation secondary batteries to solve this problem, leading recycling studies are also considered necessary. All-solid-state batteries are classified according to the composition and structure of the solid electrolyte, and a high share of oxide-based and sulfide-based solid-state electrolytes is expected in the future. In the case of sulfide-based solid electrolytes, it is difficult to recycle through hydrometallurgy due to their high reactivity with moisture, so LLZO (Li7La3Zr2O12) in oxide-based solid-sate electrolytes was separated using a selective precipitation method through this study, and each was separated through the addition of oxalic acid, Na3PO4 and pH control. It was confirmed that co-precipitation did not occur in each reaction, and the recovery rates of all elements were 90% or more. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Hydrometallurgy, Recycling and Secondary Recovery, Ceramics |