首页|Mild and efficient recovery of lithium-ion battery cathode material by deep eutectic solvents with natural and cheap components

Mild and efficient recovery of lithium-ion battery cathode material by deep eutectic solvents with natural and cheap components

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Dissolution of lithium cobalt oxide(LCO)is the key step for the recovery of valuable metals(e.g.,Co and Li)from spent LCO-based lithium-ion batteries(LIBs).However,the dissolution process of LCO either needs toxic solvents,and high temperature,or shows low efficiency.Deep eutectic solvents(DESs)are potential green solvents to dissolve LCO.Here,DESs with polyethylene glycol(PEG)as hydrogen bond acceptor and ascorbic acid(AA)as hydrogen bond donor are found to dissolve LCO with 84.2％Co leaching efficiency at 80 ℃ and 72 h,which is higher than that from the reported references by common DESs.Furthermore,both DESs components(i-e.,PEG and AA)are cheap,biodegradable,and biocompatible.AA could be easily and abundantly extracted from natural fruits or vegetables.It provides a new guide for the green,mild,and efficient dissolution of LCO aiming at sus-tainable recovery of spent LIBs.

Low costMild conditionNew energyGreen chemistryGreen solventsAscorbic acid

Yu Chen、Yanlong Wang、Yue Bai、Minghui Feng、Fengyi Zhou、Yanhong Lu、Yuting Guo、Yixuan Zhang、Tiancheng Mu

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Department of Chemistry and Material Science,Langfang Normal University,Langfang,065000,China

Hebei Regional Geological Survey Institute,Langfang,065000,China

Department of Chemistry,Renmin University of China,Beijing,100872,China

National Natural Science Foundation of ChinaOpen Fund of Hebei Biomass Carbon Materials and Application Technology Innovation CenterSpecial Project for the Cultivation of Scientific and Technological Innovation Ability of College and Middle School Students in

22103030SG202100322E50480D

2023

10.1016/j.gce.2022.06.005

绿色化学工程(英文)
中国科学院过程工程研究所

绿色化学工程(英文)

CSCD
ISSN：
年,卷(期)：2023.4(3)
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