Deep eutectic solvents for cathode recycling of Li-ion batteries

Advances in sodium secondary batteries utilizing ionic liquid electrolytes

“…168,238 Such ideas should be intensively explored for practical applications. Recent advances using ILs and their analogues as electrode pretreatment agents, 422 reaction media for electrode material synthesis, and for the recycling of spent batteries 423,424 show the multiple roles of ILs in energy-related fields and that many exciting opportunities are waiting to be discovered.…”

Recycling of Li−Ni−Mn−Co Hydroxide from Spent Batteries to Produce High‐Performance Supercapacitors with Exceptional Stability

“…However, despite the utility of LIBs in many applications such as cell phones, iPods, PDAs, laptops, digital cameras, and electric vehicles, the chemical composition of LIBs is problematic, especially after their expiration due to the reactive metals and organic materials used. Every battery has a limited lifetime and may be bulging, leaking or otherwise damaged or defective after repeated use . The main structure of Li‐ion batteries contains graphite or graphene as the anode, Li oxide for cathode, lithium salts dissolved in organic solvents as an electrolyte, and a separator from polyethylene (PE) or polypropylene (PP).…”

“…On the other hand, Tran et al . were able to extract cobalt and lithium by deep eutectic solvents with efficiency more than 90 % . Despite such success in recycling spent LIBs, the utility of the recycled metals was rarely reported.…”

“…Every battery has a limited lifetime and may be bulging, leaking or otherwise damaged or defective after repeated use. [8,9] The main structure of Li-ion batteries contains graphite or graphene as the anode, Li oxide for cathode, lithium salts dissolved in organic solvents as an electrolyte, and a separator from polyethylene (PE) or polypropylene (PP). LIBs are very dangerous if not disposed properly and can seriously cause damages to the human health and the environment.…”

“…[17] On the other hand, Tran et al were able to extract cobalt and lithium by deep eutectic solvents with efficiency more than 90 %. [9] Despite such success in recycling spent LIBs, the utility of the recycled metals was rarely reported. Aboelazm et al reported on the recovery of cobalt oxide (Co 3 O 4 ) from spent Li-ion battery and tested its performance as a supercapacitor material in 3-electrode cell.…”