@article{Zou2023, 
author = {Yongxing Zou and Jinwei Cao and Hao Li and Wanbao Wu and Yihong Liang and Jiaheng Zhang},
title = {Large-scale direct regeneration of LiFePO4@C based on spray drying},
year = {2023},
journal = {Industrial Chemistry & Materials},
volume = {1},
number = {2},
pages = {254-261},
keywords = {LiFePO4, Direct regeneration, Homogenization, Spray drying, Electrochemical performance},
url = {https://www.sciopen.com/article/10.1039/d2im00007e},
doi = {10.1039/d2im00007e},
abstract = {Direct regeneration is a low-cost and environmentally friendly way of recycling spent Li-ion batteries. In this study, a new method is adopted to regenerate spent LiFePO4. First, the spent LiFePO4 powder is homogenized, and then, small amounts of a lithium source and a carbon source are thoroughly mixed by spray drying. After that, a high-temperature solid-phase method is used to regenerate the carbon-coated lithium iron phosphate. Compared with traditional regeneration methods, the proposed method significantly improves the universality of spent LiFePO4 having different degrees of damage. The regenerated LiFePO4 is characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, and electrochemical measurements. The results show that the regenerated sample has a stable morphology, structure, and electrochemical performance. Under the conditions of 0.1C, the initial capacity exceeds 160 mA h g−1. After 800 cycles under the conditions of 1C, the capacity retention is 80%, which satisfies the requirements for regenerated LiFePO4 batteries.}
}