镍钴锰三元正极材料的湿法回收工艺优化研究

Optimization of Wet Recovery Process of Nickel-cobalt-manganese Ternary Cathode

锂电池材料,尤其是具有更高价值的镍钴锰三元正极材料,其回收利用是当前锂电池产业链的重要问题之一,是形成产业链高效率闭环所需要突破的关键技术。在材料回收的过程中,不仅需要提高回收效率,更需要回收的产物能够高效形成用于电池原材料合成的前驱体,来降低由回收料到再生材料的生产周期和成本,提高回收效率。本文针对一种锂电池用镍钴锰三元正极材料的湿法萃取回收方法,通过控制变量实验,对该种回收方法的最适宜的反应条件进行了探究。结果表明优化后的回收方法能够获得结构更规整的产物,并具有更出色的振实密度。

The recycling of lithium battery materials,especially nickel-cobalt-manganese ternary cathode materials with higher value,is one of the important issues in the current lithium battery industry chain,and it is a key technology that needs to be broken through to form a high-efficiency closed loop of the industrial chain.In the process of material recycling,it is not only necessary to improve the recycling efficiency,but also to efficiently form the precursor used for the synthesis of battery raw materials,so as to reduce the production cycle and cost from recycled materials to recycled materials and improve the recycling efficiency.In this paper,the most suitable reaction conditions for a wet extraction and recovery method of nickel-cobalt-manganese ternary cathode materials for lithium batteries were explored through control variable experiments.The results show that the optimized recovery method can obtain a product with a more regular structure and a better tapping density.