Full recovery of lithium salts and transition metal oxides from spent ternary cathode lithium-ion batteries
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 NiC<sub>2</sub>O<sub>4</sub>·2H<sub>2</sub>O. The addition of H<sub>2</sub>O<sub>2</sub> 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.
Authors
- Aoyuan Chen
- Haoshen Zhou (ORCID: https://orcid.org/0000-0001-8112-3739)
- Yan Wang (ORCID: https://orcid.org/0000-0003-2220-4330)
- Ping He (ORCID: https://orcid.org/0000-0002-1498-8203)
- Wujie Yang
- Yigang Wang (ORCID: https://orcid.org/0000-0003-3202-5934)
Institutions
- Collaborative Innovation Center of Advanced Microstructures (CN)
- Nanjing University (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc01626f
- Citations
- 3
- Primary Topic
- Extraction and Separation Processes
- Type
- article
- Field-Weighted Citation Impact
- 2.14
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- National Key Research and Development Program of China