废旧锂离子电池三元正极材料的全生命周期循环研究进展-中国材料进展

文章信息/Info

Title:: Research Progress on the Full Lifecycle Loop of Ternary Cathode Materials for Waste Lithium-Ion Batteries

Author(s):: YIN Jianguo; LU Shenxue; LIU Qiling; MA Qinfeng; WU Guanjie; College of Metallurgy and Power Engineering，Chongqing University of Science and Technology，Chongqing 401331，China

Keywords:: lithium-ion batteries; ternary cathode material; full lifecycle; loop; recovery

摘要:: 锂离子电池三元正极材料具有高循环稳定性、高能量密度、高充电速率等显著优势，在新能源汽车、智能手机等领域得以广泛应用。因富含锂、镍、钴、锰等有价金属，废旧三元正极材料的循环利用更备受关注。从锂离子电池三元正极材料的全生命周期循环的视角，全面综述了退役锂离子电池的梯次利用、废旧锂离子电池的预处理、有价金属元素的回收、三元正极材料的制备等相关技术。重点总结了火法回收和湿法回收两种回收有价金属元素的方法。分析了废旧锂离子电池三元正极材料的直接修复，探讨了分步制备和一步制备两种制备三元正极材料的方法。最后，展望了废旧锂离子电池三元正极材料的循环利用领域的发展方向和需重点关注的问题。

Abstract:: Lithium-ion battery ternary cathode materials have significant advantages such as high cycling stability, high energy density and high charging rate, and are widely used in new energy vehicles, smartphones and other fields. Due to the abundance of valuable metals, such as lithium, nickel, cobalt and manganese,the recycling of waste ternary cathode materials has attracted more attention. This work comprehensively reviewed the cascading utilization of retired lithium-ion batteries, pretreatment of waste lithium-ion batteries, recycling of valuable metal elements, and preparation of ternary cathode materials from the perspective of the full lifecycle cycle of lithium-ion battery cathode materials.Emphasis was placed on the two recycling methods for valuable metal elements, namely pyrometallurgical recovery and wet recovery. The direct repair of ternary cathode materials for waste lithium-ion batteries was analyzed, and two methods for preparation of ternary cathode materials,stepwise preparation and one-step preparation, were discussed. Finally, the development direction and key issues to be focused on in the field of recycling of ternary cathode materials for waste lithium-ion batteries were discussed.