钴
过渡金属
锰
镍
阴极
浸出(土壤学)
萃取(化学)
化学
非阻塞I/O
无机化学
金属
材料科学
物理化学
冶金
催化作用
生物化学
环境科学
色谱法
土壤科学
土壤水分
作者
Xin Chang,Min Fan,Chao‐Fan Gu,Wei‐Huan He,Qinghai Meng,Li‐Jun Wan,Yu‐Guo Guo
标识
DOI:10.1002/anie.202202558
摘要
The complexity of chemical compounds in lithium-ion batteries (LIBs) results in great difficulties in the extraction of multiple transition metals, which have similar physicochemical characteristics. Here, we propose a novel strategy for selective extraction of nickel, cobalt, and manganese from spent LiNix Coy Mn1-x-y O2 (NCM) cathode through the regulation of coordination environment. Depending on adjusting the composition of ligand in transition metal complexes, a tandem leaching and separation system is designed and finally enables nickel, cobalt, and manganese to enrich in the form of NiO, Co3 O4 , and Mn3 O4 with high recovery yields of 99.1 %, 95.1 %, and 95.3 %, respectively. We further confirm that the combination of different transition metals with well-designed ligands is the key to good selectivity. Through our work, fine-tuning the coordination environment of metal ions is proved to have great prospects in the battery recycling industry.
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