Direct lithium extraction from spent batteries for efficient lithium recycling

Wei Liu ¹Mengchuang Liu ²Fenfen Ma ³Mingsheng Qin ⁴Wei Zhong ⁴Xin Chen ⁵Ziqi Zeng ⁶Shijie Cheng ⁶Jia Xie⁶

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作者信息

1. State Key Laboratory of Advanced Electromagnetic Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;State Key Laboratory of Materials Processing and Die & Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
2. School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
3. GuSu Laboratory of Materials,Suzhou 215123,China
4. State Key Laboratory of Materials Processing and Die & Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
5. Suzhou Laboratory,Suzhou 215123,China
6. State Key Laboratory of Advanced Electromagnetic Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
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Abstract

The flourishing expansion of the lithium-ion batteries(LIBs)market has led to a surge in the demand for lithium resources.Developing efficient recycling technologies for imminent large-scale retired LIBs can significantly facilitate the sustainable utilization of lithium resources.Here,we successfully extract active lithium from spent LIBs through a simple,efficient,and low-energy-consumption chemical leaching pro-cess at room temperature,using a solution comprised of polycyclic aromatic hydrocarbons and ether sol-vents.The mechanism of lithium extraction is elucidated by clarifying the relationship between the redox potential and extraction efficiency.More importantly,the reclaimed active lithium is directly employed to fabricate LiFePO4 cathode with performance comparable to commercial materials.When implemented in 56 Ah prismatic cells,the cells deliver stable cycling properties with a capacity retention of～90％after 1200 cycles.Compared with the other strategies,this technical approach shows superior economic ben-efits and practical promise.It is anticipated that this method may redefine the recycling paradigm for retired LIBs and drive the sustainable development of industries.

Key words

Retired lithium-ion batteries/Lithium recycling/Chemical leaching/Active lithium/Lithium iron phosphate

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基金项目

National Key Research and Development Program of China(2022YFB2404800)

National Natural Science Foundation of China(U1966214)

National Natural Science Foundation of China(22008082)

出版年

2024

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

参考文献量2

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