浸出(土壤学)
催化作用
原材料
材料科学
锂(药物)
电化学
废物管理
化学工程
化学
环境科学
电极
工程类
土壤科学
土壤水分
物理化学
有机化学
内分泌学
医学
生物化学
作者
Yun-Cheng Yang,Hailun Yang,Hongbin Cao,Zhonghang Wang,Chunwei Liu,Yi Sun,He Zhao,Yi Zhang,Zhi Sun
标识
DOI:10.1016/j.jclepro.2019.07.051
摘要
The recovery of waste lithium-ion batteries (LIBs) is an intensively studied worldwide because of environmental pollution and the risk of undersupply of a strategic raw material. Traditional technologies have poor selectivity for lithium recovery from waste LIBs. Metallic Ni, Co, and Mn are usually recovered by leaching, precipitation, and solvent extraction. These recycling methods are costly and have a long recycling route and high potential for secondary waste generation. In this paper, a mechanochemical activation approach was proposed for the selective recycling of lithium and recovery of Ni0.5Mn0.3Co0.2(OH)2 from spent LiNi0.5Mn0.3Co0.2O2 batteries. The leaching efficiency and Li selectivity were found to be 95.10% and 100%, respectively. The structure of Ni0.5Mn0.3Co0.2(OH)2 was investigated using various characterisation techniques. The selective reaction mechanism of mechanochemical activation was identified. High-purity Li2CO3 (99.96 wt%) was obtained. Electrochemical tests showed that the performance of Ni0.5Mn0.3Co0.2(OH)2 was comparable to that of a commercial oxygen evolution reaction catalyst (IrO2). This research demonstrates an effective and shorter route from waste to a functional material during recycling spent LIBs that incorporates the principles of green chemistry and shows great potential for practical application.
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