@article{Cao2025, 
author = {Yang Cao and Junfeng Li and Haotian Qu and Haocheng Ji and Lingshu Li and Xijun Wei and Guangmin Zhou},
title = {Reconstruction of lithium replenishment channel with an amorphous structure for efficient regeneration of spent LiCoO2 cathodes},
year = {2025},
journal = {Energy Materials and Devices},
volume = {3},
number = {1},
pages = {9370059},
keywords = {lithium-ion battery (LIB), regeneration, ball milling, amorphous structure},
url = {https://www.sciopen.com/article/10.26599/EMD.2025.9370059},
doi = {10.26599/EMD.2025.9370059},
abstract = {Lithium-ion batteries with LiCoO2 (LCO) cathodes are widely used in various electronic devices, resulting in a large amount of spent LCO (SLCO). Therefore, there is an urgent need for an efficient technique for recycling SLCO. However, due to the presence of cobalt oxide with a spinel phase on the surface of highly-degraded LCO, the strong electrostatic repulsion from the transition metal octahedron poses a high Li replenishment barrier, making the regeneration of highly-degraded LCO a challenge. Herein, we propose a structural transformation strategy for reconstructing Li replenishment channels to aid the direct regeneration of highly-degraded LCO. In this approach, ball milling is employed to disrupt the inherent structure of highly-degraded LCO, thereby releasing the internal stress and converting the surface spinel phase into a homogeneous amorphous structure, which promotes Li insertion and regeneration. The regenerated LCO (RLCO) exhibits an outstanding discharge capacity of 179.10 mAh·g−1 in the voltage range of 3.0–4.5 V at 0.5 C. The proposed strategy is an effective regeneration approach for highly-degraded LCO, thereby facilitating the efficient recycling of spent lithium-ion battery cathode materials.}
}