A review for high-value utilization of retired spent electrolyte for lithium-ion battery: how to reduce the waste of resources?

IF 2.6 4区化学 Q3 CHEMISTRY, PHYSICAL

Ionics Pub Date : 2025-05-09 DOI:10.1007/s11581-025-06355-5

Jie Wang, Dong Hong, Dongni Zhao, Xiaoling Cui, Linhu Song, Junlong Zhu, Yinong Wang, Feifei Zong, Ningshuang Zhang, Shiyou Li

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Abstract

Establishing a complete recycling chain of decommissioned lithium-ion batteries (LIBs) electrolytes is crucial for promoting the sustainable development of the lithium battery industry and realizing a closed-loop ecology of products. However, the recycling process for cathode materials has not yet solved the problem of environmental pollution caused by organic electrolytes. With the increasing cost of electrolytes in LIBs year by year, the effective recovery and utilization of organic electrolytes is also becoming more and more important. Therefore, from the dual perspectives of efficient resource utilization and environmental protection, it is of great significance to realize the high-value utilization of electrolytes of retired LIBs. This article aims to review the current situation regarding the recovery of electrolytes from retired LIBs. Firstly, the composition and properties of electrolytes in LIBs and the potential environmental hazards are summarized to clarify the necessity for retired LIB recycling. After that, the recycling processes of electrolytes from retired LIBs are discussed in two parts: the research status of vacuum pyrolysis and extraction. The electrolytes in retired LIBs can be treated appropriately but without further utilization or high-value conversion. Based on the comprehensive analysis of the sustainable development of the industry and the need to achieve a closed-loop ecology of products, a high-value utilization direction for the spent electrolytes in retired LIBs is proposed and prospected.

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退役废电解液用于锂离子电池高价值利用研究进展：如何减少资源浪费？

建立完整的退役锂离子电池电解液回收链，对于促进锂电池产业可持续发展，实现产品闭环生态至关重要。然而，正极材料的回收工艺尚未解决有机电解质对环境的污染问题。随着lib中电解质成本的逐年上升，有机电解质的有效回收利用也变得越来越重要。因此，从资源高效利用和环境保护的双重角度出发，实现退役lib电解液的高价值利用具有重要意义。本文综述了退役锂离子电池电解液回收的现状。首先，总结了锂离子电池中电解质的组成和性质以及潜在的环境危害，阐明了退役锂离子电池回收的必要性。然后，从真空热解和抽提两部分论述了退役lib电解液的回收利用工艺。退役lib中的电解质可以适当处理，但不能进一步利用或进行高价值转化。在综合分析行业可持续发展和实现产品闭环生态需求的基础上，提出并展望了退役lib废电解液的高价值利用方向。

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来源期刊

Ionics 化学-电化学

CiteScore

5.30

自引率

7.10%

发文量

427

审稿时长

2.2 months

期刊介绍： Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.