Enhanced Electrochemical Properties of Cobalt by Varying the Ethylene Glycol - Choline Chloride Composition in a Deep Eutectic Solvent Mixture

The increased demand for portable electronic devices and electric vehicles has resulted in an exponential increase lithium-ion battery (LIB) waste, becoming turn important secondary source critical metals. Electrowinning is a commonly used method to recover base precious metals from solution, which can also be valuable spent LIBs. This study unveiled the cobalt electrochemical recovery using model Co sources increasing amounts of ethylene glycol (EG), 67 molar %, 82 % 100 mixture with choline chloride. results show that amount EG together small concentration sulfate anions, conjunction chloride solution favours reduction 2+ . improved electrochemistry seems related changes speciation easing process. Additionally, nature salt significant impact on efficiency, morphology, purity electrodeposit. work will underpin science design safe electrolyte mixtures enhance sources.