Suriyanarayanan Subramanian, Babu Mohana Priya, Murugan Raja, Muthuraj Divyamahalakshmi, Ramanujam Kothandaraman, Nicholls Ian A
Bioorganic and Biophysical Chemistry Laboratory, Linnaeus Centre for Biomaterials Chemistry, Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden.
Clean Energy Laboratory, Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600 036, India.
ACS Omega. 2023 Feb 13;8(7):6959-6967. doi: 10.1021/acsomega.2c07780. eCollection 2023 Feb 21.
The growing demand for lithium-ion batteries (LiBs) for the electronic and automobile industries combined with the limited availability of key metal components, in particular cobalt, drives the need for efficient methods for the recovery and recycling of these materials from battery waste. Herein, we introduce a novel and efficient approach for the extraction of cobalt, and other metal components, from spent LiBs using a nonionic deep eutectic solvent (ni-DES) comprised of -methylurea and acetamide under relatively mild conditions. Cobalt could be recovered from lithium cobalt oxide-based LiBs with an extraction efficiency of >97% and used to fabricate new batteries. The -methylurea was found to act as both a solvent component and a reagent, the mechanism of which was elucidated.
电子和汽车行业对锂离子电池（LiBs）的需求不断增长，加上关键金属成分（特别是钴）的供应有限，推动了从电池废料中回收和再利用这些材料的高效方法的需求。在此，我们介绍了一种新颖且高效的方法，即在相对温和的条件下，使用由N-甲基脲和乙酰胺组成的非离子型深共熔溶剂（ni-DES）从废旧锂离子电池中提取钴和其他金属成分。钴可以从基于锂钴氧化物的锂离子电池中回收，提取效率>97%，并用于制造新电池。发现N-甲基脲既作为溶剂成分又作为试剂，阐明了其作用机制。
