Direct regeneration of spent cathode materials for lithium-ion batteries:Research advances,challenges and prospects
With the rapid development of the new energy industry,the production of lithium-ion batteries has increased sharply. Due to its limited life,the peak of lithium-ion battery retirement will come in the future. Efficient and clean recycling of spent lithium-ion batteries is the last link of the new energy industry chain. The step is crucial to the closed-loop development of the new energy industry. At present,the cathode materials of spent lithium-ion batteries are mainly directly recycled by solid phase method (solid phase sintering,molten salt method,etc.) and liquid phase method (hydrothermal method,electrochemical method,etc.). In this paper,the relationship between the pre-treatment process and the repair process of spent lithium-ion batteries is briefly described,and the influence of the repair method on the crystal phase,defects,surface interface and electrochemical properties of the spent cathode materials is emphasized. Finally,a series of prospects for the direct repair methods of spent lithium-ion battery materials are presented,aiming at providing meaningful guidance for the future direct repair technology of spent lithium-ion battery cathode materials.
万方数据
维普
