退役三元锂离子电池正极材料高效清洁回收技术研究进展

锂离子电池因其能量密度高、循环性能好、自放电低等优势在各个领域得到了广泛的应用.近年来,退役三元锂离子电池数量急剧增长,从保护环境和节约资源的角度来看,开展退役锂离子电池回收再生工艺研究是必要的.本文综述了退役三元锂离子电池回收再生技术的研究现状,指出对衰减程度不同的锂电池正极材料需采取灵活的梯级回收工艺路线,并详细介...

Research Progress on Efficient and Clean Recycling Technology of Spent Ternary Lithium Battery Cathode Materials

Lithium-ion batteries have been widely used in various fields due to their high energy density, good cycle performance and low self-discharge. In recent years, the number of spent ternary lithium-ion batteries have increased dramatically. From the perspective of environmental protection and resource conservation, it is necessary to carry out green and efficient processes to recycle and regenerate spent lithium-ion batteries. This article reviews the research status of the recycling technology for spent ternary lithium-ion batteries, and point out recycling lithium-ion batteries should be in accordance of their characteristics and states. The hydrometallurgical processes including leaching and regeneration of cathode materials for spent lithium-ion batteries are introduced in detail, as well as the process of physical repair and regeneration of some spent cathode materials, and then their advantages and existing problems are illustrated. In the end, the prospect and development direction of the recycling of spent lithium-ion batteries are prospected.