Selective Extraction of Critical Metals from Spent Lithium-Ion Batteries

Mengmeng Wang; Kang Liu; Zibo Xu

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Selective Extraction of Critical Metals from Spent Lithium-Ion Batteries

机译：Selective Extraction of Critical Metals from Spent Lithium-Ion Batteries

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Selective and highly efficient extraction technologies for the recovery of critical metals including lithium, nickel, cobalt, and manganese from spent lithium-ion battery (LIB) cathode materials are essential in driving circularity. The tailored deep eutectic solvent (DES) choline chloride-formic acid (ChCl-FA) demonstrated a high selectivity and efficiency in extracting critical metals from mixed cathode materials (LiFePO4:Li(NiCoMn)_(1/3)O2 mass ratio of 1:1) under mild conditions (80 °C, 120 min) with a solid-liquid mass ratio of 1:200. The leaching performance of critical metals could be further enhanced by mechanochemical processing because of particle size reduction, grain refinement, and internal energy storage. Furthermore, mechanochemical reactions effectively inhibited undesirable leaching of nontarget elements (iron and phosphorus), thus promoting the selectivity and leaching efficiency of critical metals. This was achieved through the preoxidation of Fe and the enhanced stability of iron phosphate framework, which significantly increased the separation factor of critical metals to nontarget elements from 56.9 to 1475. The proposed combination of ChCl-FA extraction and the mechanochemical reaction can achieve a highly selective extraction of critical metals from multisource spent LIBs under mild conditions.

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来源
《Environmental Science & Technology: ES&T》 |2023年第9期|3940-3950|共11页
作者
Mengmeng Wang; Kang Liu; Zibo Xu;
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作者单位

Department of Civil and Environmental Engineering The Hong Kong Polytechnic University, Kowloon, Hong Kong China;

Research Centre for Environmental Technology and Management, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China;

Department of Civil and Environmental Engineering The Hong Kong Polytechnic University, Kowloon, Hong Kong China;

Research Centre for Environmental Technology and Management, The Hong Kong Polytechnic University, Kowloon, Hong Kong China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
Selective recovery; deep eutectic solvent; choline chloride-formic acid; mechanochemistry; sustainable waste management;

Selective Extraction of Critical Metals from Spent Lithium-Ion Batteries

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