Electrochemical Li Recovery from Spent LiFePO4-Based Li-Ion Batteries

IF 19.3 1区材料科学 Q1 CHEMISTRY, PHYSICAL

ACS Energy Letters Pub Date : 2025-06-04 DOI:10.1021/acsenergylett.5c01087

Do-Hwan Nam, Brian M. Foster, Kyoung-Shin Choi

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Abstract

The increase in electric vehicles (EVs) powered by lithium-ion batteries (LIBs) will generate a massive number of spent LIBs in the future. LiFePO₄ has recently become the most desired cathode for LIBs in EVs because it is remarkably cheaper and safer than other cathodes. Recovering lithium from spent LiFePO₄ batteries using conventional methods, however, may not be economically viable because there are no valuable metals to recover in LiFePO₄ other than lithium. This study reports the invention of an electrochemical system, composed of a Li⁺-extraction cell and a Li⁺-recovery cell, which can recycle Li⁺ from spent LiFePO₄-LIBs as Li₃PO₄, Li₂CO₃, or LiOH using simple and cost-effective procedures. While recovering Li⁺, these cells also regenerate the acid consumed for Li⁺ leaching, minimizing the chemicals needed and the waste generated, enabling sustainable and environmentally benign Li⁺ recycling. The choice of electrodes, operation principles, performance, and variation of the Li⁺-extraction/recovery cells are reported.

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废旧lifepo4基锂离子电池的电化学锂回收

随着以锂离子电池（LIBs）为动力的电动汽车（ev）的增加，未来将产生大量的废锂电池。LiFePO4最近成为电动汽车中锂离子电池最理想的阴极，因为它比其他阴极便宜和安全得多。然而，使用传统方法从废LiFePO4电池中回收锂可能在经济上不可行，因为除了锂之外，LiFePO4中没有其他有价值的金属可以回收。本研究报告了一种由Li+萃取电池和Li+回收电池组成的电化学系统，该系统可以用简单且经济的方法从废LiFePO4-LIBs中回收Li+作为Li3PO4， Li2CO3或LiOH。在回收锂离子的同时，这些电池还可以再生用于锂离子浸出的酸，从而最大限度地减少所需的化学品和产生的废物，实现可持续和环保的锂离子回收。报道了锂离子提取/回收电池的电极选择、工作原理、性能和变化。

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来源期刊

ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment

CiteScore

31.20

自引率

5.00%

发文量

469

审稿时长

1 months

期刊介绍： ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format. ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology. The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.