A novel strategy of lithium recycling from spent lithium-ion batteries using imidazolium ionic liquid  

作　　者：Hongshuai Zheng Jiaqi Huang Tao Dong Yifan Sha Haitao Zhang Jie Gao Suojiang Zhang 

机构地区：[1]CAS Key Laboratory of Green Process and Engineering,Beijing Key Laboratory of Ionic Liquids Clean Process,State Key Laboratory of Multiphase Complex Systems,Innovation Academy for Green Manufacture,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China [2]Henan Institute of Advanced Technology,Zhengzhou University,Zhengzhou 450002,China [3]Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo 315201,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第1期246-251,共6页中国化学工程学报（英文版）

基　　金：supported by the Science Fund for Major Program of National Natural Science Foundation of China(21890762);Innovation Academy for Green Manufacture,Chinese Academy of Sciences(IAGM-2020-C28).

摘　　要：In light of the increasing demand for environmental protection and energy conservation,the recovery of highly valuable metals,such as Li,Co,and Ni,from spent lithium-ion batteries(LIBs)has attracted widespread attention.Most conventional recycling strategies,however,suffer from a lack of lithium recycling,although they display high efficiency in the recovery of Co and Ni.In this work,we report an efficient extraction process of lithium from the spent LIBs by using a functional imidazolium ionic liquid.The extraction efficiency can be reached to 92.5%after a three-stage extraction,while the extraction efficiency of Ni-Co-Mn is less than 4.0%.The new process shows a high selectivity of lithium ion.FTIR spectroscopy and ultraviolet are utilized to characterize the variations in the functional groups during extraction to reveal that the possible extraction mechanism is cation exchange.The results of this work provide an effective and sustainable strategy of lithium recycling from spent LIBs.

关 键 词：Ionic liquid LITHIUM Selective extraction Spent lithium batteries RECOVERY 

分 类 号：TF826.3[冶金工程—有色金属冶金] O645.1[理学—物理化学] X705[理学—化学]