Full recovery of lithium salts and transition metal oxides from spent ternary cathode lithium-ion batteries.
作者信息
Wang Yan, Wang Yigang, Chen Aoyuan, Yang Wujie, Zhou Haoshen, He Ping
机构信息
Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China.
出版信息
Chem Commun (Camb). 2025 Jul 8;61(56):10379-10382. doi: 10.1039/d5cc01626f.
This study developed a novel deep eutectic solvent (DES) composed of tetraethylammonium chloride and oxalic acid for efficient recovery of valuable metals from spent lithium-ion battery ternary cathode materials. The DES selectively leached Li, Co, and Mn, while precipitating Ni as high-purity NiCO·2HO. The addition of HO reduced the consumption of oxalic acid and enhanced metal leaching under mild conditions. By modulating the coordination environment and leveraging solubility differences, single metal compounds with purities exceeding 97% have been isolated, which are applicable for resynthesizing high-performance cathode materials.
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