Ionic liquids and deep eutectic solvents for green recycle of spent lithium-ion batteries

doi:10.16085/j.issn.1000-6613.2022-0255

Abstract

Abstract:

The green and efficient recovery of lithium-ion batteries at mild temperature is very important. This review introduces DESs and ILs for recycling cathode materials, aluminum foil and copper foil from spent lithium-ion batteries and provide the prospects for the future. The difference in recycling lithium-ion batteries cathode materials by ILs and DESs are analyzed. The effect of chemical structure, acidity, temperature, time and mass ratio is particularly discussed. The thermodynamic and kinetic laws and dissolution mechanism of recycling waste lithium-ion batteries with green solvents are summarized. It also pointes out some problems existing in the recycling of waste lithium-ion batteries with ILs and DESs and put forward possible countermeasures.

Key words: dissolution, ionic liquids, leaching, solvents, thermodynamics, recovery

摘要：

温和条件下废旧锂离子电池的绿色高效回收具有重大意义，目前利用离子液体和低共熔溶剂回废旧收锂离子电池的综述报道较少。本综述回顾近年离子液体和低共熔溶剂回收废旧锂离子电池，分析离子液体和低共熔溶剂对不同锂离子电池正极材料回收的差异性，介绍绿色溶剂结构、酸碱性、电池组成、温度、时间、质量比等因素对回收的影响，归纳绿色溶剂回收废旧锂离子电池的热力学和动力学规律及其溶解机制，并指出利用离子液体和低共熔溶剂回收废旧锂离子电池目前存在的一些问题及其提出可能的应对策略。

关键词: 溶解, 离子液体, 浸取, 溶剂, 热力学, 回收

CLC Number:

TQ152

CHEN Yu, LIU Chong, QIU Yuhui, BI Zixin, MU Tiancheng. Ionic liquids and deep eutectic solvents for green recycle of spent lithium-ion batteries[J]. Chemical Industry and Engineering Progress, 2022, 41(S1): 485-496.

陈钰, 刘冲, 邱于荟, 贲梓欣, 牟天成. 离子液体和低共熔溶剂绿色回收废旧锂离子电池的研究进展[J]. 化工进展, 2022, 41(S1): 485-496.

Figures/Tables 8

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萃取剂缩写	萃取剂中文名	价格 /USD·kg^-1	钴镍分离比	（原始钴/镍溶液浓度） /g·L^-1	稀释剂	参考文献
Cyanex 272	双（2，4，4-三甲基戊基）膦酸	1~160	750	14/15	煤油	［41］
PC88A	2-乙基己基膦酸单-2-乙基已酯	6~8	42	21/1	煤油	［42］
D2EHPA	二（2-乙基己基）磷酸	2~30	14	—	煤油	［43］
［P₈₈₈₈］［Oleate］	四辛基膦油酸型离子液体	10	30000	15/21	—	［39］

萃取剂缩写	萃取剂中文名	价格 /USD·kg^-1	钴镍分离比	（原始钴/镍溶液浓度） /g·L^-1	稀释剂	参考文献
Cyanex 272	双（2，4，4-三甲基戊基）膦酸	1~160	750	14/15	煤油	［41］
PC88A	2-乙基己基膦酸单-2-乙基已酯	6~8	42	21/1	煤油	［42］
D2EHPA	二（2-乙基己基）磷酸	2~30	14	—	煤油	［43］
［P₈₈₈₈］［Oleate］	四辛基膦油酸型离子液体	10	30000	15/21	—	［39］

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