From trash to treasure: new method efficiently regenerates spent lithium cobalt oxide batteries
Peer-Reviewed Publication
Updates every hour. Last Updated: 21-Aug-2025 12:11 ET (21-Aug-2025 16:11 GMT/UTC)
A recent study led by researchers from Tsinghua University and Southwest University of Science and Technology has introduced a new method to directly regenerate heavily degraded lithium cobalt oxide [LiCoO₂ (LCO)] cathodes from spent lithium-ion batteries. Using a ball milling process to convert the damaged crystalline structure into a uniform amorphous phase, the team rebuilt lithium replenishment pathways and restored electrochemical performance through high-temperature sintering. The regenerated cathodes delivered a discharge capacity of 179.10 mAh·g⁻¹—comparable to commercial materials. This approach not only sidesteps the environmental and energy drawbacks of conventional recycling but also presents a scalable and economically viable solution for the reuse of retired battery components.
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