{"title":"Novel deep eutectic solvent systems for selective transition metal recovery and sustainable battery recycling","authors":"Yun-Hsien Chung , PratimaDevi Sivasubramanian , Ching-Lung Chen","doi":"10.1016/j.seppur.2025.133098","DOIUrl":null,"url":null,"abstract":"<div><div>Transition metals have similar physicochemical properties and a complex composition, making their selective extraction from lithium-ion batteries (LIBs) highly challenging. In this work, a unique method for effectively recovering nickel, cobalt, and manganese (NCM111) from the LIB cathodes using deep eutectic solvents is presented. Decreased utilization of reagents and optimized interactions of ligand helps in specific dissolution of metals, which is facilitated by the DES, that acts as a green solvent. In order to achieve high-purity recovery of nickel (90%), cobalt (98%), and manganese (100%), we implemented a simultaneous leaching and separation method by adjusting the coordination environments of metal ions. Through precise temperature modulation and regulated ligand interactions, our methodology improves extraction efficiency and reduces contaminant incorporation while increasing selectivity when compared to traditional acid leaching procedures. The results obtained show that ligand-assisted leaching enhances metal separation while reducing reagent usage, which makes the procedure more environmentally friendly. In order to enhance recovery efficiency, the study also optimizes important leaching factors, such as temperature, solvent composition, and metal–ligand interactions. This study targets substantial problems in metal recovery and advances the development of sustainable battery recycling solutions by providing an efficient and eco-friendly alternative for traditional recycling methods.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"368 ","pages":"Article 133098"},"PeriodicalIF":9.0000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586625016958","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/18 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Transition metals have similar physicochemical properties and a complex composition, making their selective extraction from lithium-ion batteries (LIBs) highly challenging. In this work, a unique method for effectively recovering nickel, cobalt, and manganese (NCM111) from the LIB cathodes using deep eutectic solvents is presented. Decreased utilization of reagents and optimized interactions of ligand helps in specific dissolution of metals, which is facilitated by the DES, that acts as a green solvent. In order to achieve high-purity recovery of nickel (90%), cobalt (98%), and manganese (100%), we implemented a simultaneous leaching and separation method by adjusting the coordination environments of metal ions. Through precise temperature modulation and regulated ligand interactions, our methodology improves extraction efficiency and reduces contaminant incorporation while increasing selectivity when compared to traditional acid leaching procedures. The results obtained show that ligand-assisted leaching enhances metal separation while reducing reagent usage, which makes the procedure more environmentally friendly. In order to enhance recovery efficiency, the study also optimizes important leaching factors, such as temperature, solvent composition, and metal–ligand interactions. This study targets substantial problems in metal recovery and advances the development of sustainable battery recycling solutions by providing an efficient and eco-friendly alternative for traditional recycling methods.
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.
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