Zixian Li, Qingxin Zheng
In this study, hydrothermal leaching of LiFePO4 (LFPO) cathode materials with citric acid was conducted with the purpose of achieving high leaching efficiencies of Li, Fe, and P at high pulp densities within 10 min. As two most critical parameters, the temperature and acid concentration were mainly optimized. The results indicate that conditions of 100 ◦C with 2 mol/L citric acid and 180 ◦C with 4 mol/L citric acid are conducive to maintaining high leaching efficiencies at high pulp densities. With consideration of reducing energy and chemical consumption, the former condition was selected, achieving high leaching efficiencies for Li, Fe, and P at 100%, 98.8%, and 95.3%, respectively, at a pulp density of 30 g/L. Furthermore, a process of separating elements from leachates obtained from hydrothermal leaching of LFPO with citric or oxalic acid was proposed. High-purity (> 99.6%) Li3PO4 microparticles were obtained with P separation efficiencies exceeding 92.5% using both.
@article{ed7ee40c-ecdc-484d-92b0-400797c9c419,
title={Process optimization of hydrothermal leaching of LiFePO4 c 2027 The Journal },
author={Zixian Li and Qingxin Zheng},
year={2026},
language={en}
}TY - JOUR TI - Process optimization of hydrothermal leaching of LiFePO4 c 2027 The Journal AU - Zixian Li AU - Qingxin Zheng PY - 2026 LA - en ER -
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