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Potential Controllable Redox Couple for Mild and Efficient Lithium Recovery from Spent Batteries |
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| Authors: | Xin Chang Min Fan Boheng Yuan Chao-Fan Gu Wei-Huan He Chen Li Xi-Xi Feng Prof Sen Xin Dr Qinghai Meng Prof Li-Jun Wan Prof Yu-Guo Guo |
| Institution: | 1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China
University of Chinese Academy of Sciences (UCAS), Beijing, 100049 P. R. China These authors contributed equally to this work. Contribution: Data curation (lead), Formal analysis (lead), Investigation (lead), Writing - original draft (lead), Writing - review & editing (lead);2. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China These authors contributed equally to this work. Contribution: Data curation (equal), Formal analysis (equal), Investigation (equal);3. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China Contribution: Formal analysis (equal);4. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China University of Chinese Academy of Sciences (UCAS), Beijing, 100049 P. R. China Contribution: Formal analysis (equal), Investigation (equal);5. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China University of Chinese Academy of Sciences (UCAS), Beijing, 100049 P. R. China Contribution: Formal analysis (equal);6. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China University of Chinese Academy of Sciences (UCAS), Beijing, 100049 P. R. China Contribution: Supervision (equal);7. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China;8. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Centre for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 P. R. China University of Chinese Academy of Sciences (UCAS), Beijing, 100049 P. R. China Contribution: Conceptualization (equal), Supervision (equal) |
| Abstract: | The prosperity of the lithium-ion battery market is dialectically accompanied by the depletion of corresponding resources and the accumulation of spent batteries. It is an urgent priority to develop green and efficient battery recycling strategies for helping ease resources and environmental pressures at the current stage. Here, we propose a mild and efficient lithium extracting strategy based on potential controllable redox couples. Active lithium in the spent battery without discharging is extracted using a series of tailored aprotic solutions comprised of polycyclic aromatic hydrocarbons and ethers. This ensures a safe yet efficient recycling process with nearly ≈100 % lithium recovery. We further investigate the Li+-electron concerted redox reactions and the effect of solvation structure on kinetics during the extraction, and broaden the applicability of the Li-PAHs solution. This work can stimulate new inspiration for designing novel solutions to meet efficient and sustainable demands in recycling batteries. |
| Keywords: | Direct Regeneration Electrochemistry Lithium-Ion Batteries Selective Lithium Extraction |