萃取(化学)
电池(电)
材料科学
钴
阴极
锂(药物)
降水
锰
电化学
锂离子电池
残液
杂质
镍
湿法冶金
化学工程
冶金
电极
化学
硫酸
色谱法
功率(物理)
有机化学
气象学
物理化学
内分泌学
医学
量子力学
工程类
物理
作者
Yue Yang,Shengming Xu,Yinghe He
标识
DOI:10.1016/j.wasman.2017.03.018
摘要
A novel process for extracting transition metals, recovering lithium and regenerating cathode materials based on facile co-extraction and co-precipitation processes has been developed. 100% manganese, 99% cobalt and 85% nickel are co-extracted and separated from lithium by D2EHPA in kerosene. Then, Li is recovered from the raffinate as Li2CO3 with the purity of 99.2% by precipitation method. Finally, organic load phase is stripped with 0.5 M H2SO4, and the cathode material LiNi1/3Co1/3Mn1/3O2 is directly regenerated from stripping liquor without separating metal individually by co-precipitation method. The regenerative cathode material LiNi1/3Co1/3Mn1/3O2 is miro spherical morphology without any impurities, which can meet with LiNi1/3Co1/3Mn1/3O2 production standard of China and exhibits good electrochemical performance. Moreover, a waste battery management model is introduced to guarantee the material supply for spent battery recycling.
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