Separation of nickel from cobalt and manganese in lithium ion batteries using deep eutectic solvents. Issue 12 (27th May 2022)

• Record Type: Journal Article
• Authors: Thompson, Dana L.; Pateli, Ioanna M.; Lei, Chunhong; Jarvis, Abbey; Abbott, Andrew P.; Hartley, Jennifer M.
• Is Part Of: Green chemistry. Volume 24:Issue 12(2022)
• Page Start: 4877
• Page End: 4886
• Publication Date: 2022-05-27
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d2gc00606e
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Cobalt and manganese were selectively leached from LiNMC using an oxalic acid : choline chloride deep eutectic solvent, resulting in a nickel-enriched solid residue. Abstract : A cornerstone of the decarbonisation agenda is the use of lithium ion batteries, particularly for electric vehicles. It is essential that effective recycling protocols are developed and this includes the ability to selectively digest and recover components of the cathode materials, most commonly including manganese, cobalt and nickel. This study shows a method by which nickel oxide can be efficiently separated from cobalt and manganese oxides using an oxalic acid-based deep eutectic solvent. The subsequent addition of water to the pregnant solution enables the co-precipitation of cobalt and manganese oxalates. This permits a route to the reformulation of the active materials from high cobalt and manganese content to high nickel content.