Green and efficient selective lithium extraction from spent lithium-ion batteries using a self-pressurizing-assisted oxidative fixation system

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-01-20 DOI:10.1016/j.seppur.2025.131716

Yong Yan, Yongli Lv, Yuhai Sun, Min Chen, Dan Zhou, Lei Sun, Hai-bin Cheng, Wei-jia Li, Zhi Chen, Cong-Ming Tang, Li Chang, Jun-Qiang Xu

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Abstract

In the recycling of spent lithium batteries, priority lithium extraction is receiving extensive attention because of its prospects and development difficulties. This paper presents a simple, green, and efficient scheme for lithium extraction. In this process, oxidation is the main driving force, and pressure action and ion exchange assist in effectively achieving selective lithium recovery. The experimental results showed that a reasonable configuration of multiple driving forces caused a partial phase transition (cracks appearing) in the layered structure, which ultimately achieved 95.98 % lithium recovery and 94.69 % selectivity. Notably, the lithium-rich leach solution was nearly neutral, and the residue composition was nearly the same as that obtained after cathode charging. Combined with the corresponding characterization results, a mechanism of multiple driving forces for selective lithium extraction is proposed, which will provide a reference for subsequent metal selective recovery.

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利用自加压辅助氧化固定系统从废锂离子电池中绿色高效地选择性提取锂

在废锂电池的回收利用中，优先提锂因其前景广阔、开发难度大而受到广泛关注。本文提出了一种简单、绿色、高效的锂提取方案。在这一过程中，氧化作用是主要驱动力，压力作用和离子交换辅助有效地实现了锂的选择性回收。实验结果表明，多种驱动力的合理配置导致了层状结构的部分相变（出现裂缝），最终实现了 95.98% 的锂回收率和 94.69% 的选择性。值得注意的是，富锂浸出液接近中性，残留物成分与正极充电后的残留物成分几乎相同。结合相应的表征结果，提出了选择性锂萃取的多重驱动力机制，为后续的金属选择性回收提供了参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.