A novel electrochemical redox method for the simultaneous recovery of spent lithium-ion battery cathodes and anodes

Abstract

With the rapid development of the electric vehicles industry, an enormous amount of spent lithium-ion batteries (LIBs) had been generated. However, the traditional electrochemical recycling method suffers from high cell...

A case study using spectroscopy and computational modelling for Co speciation in a deep eutectic solvent

“…Recently an octahedral structure [Co(EG) 6 ] 2+ was reported at l max = 534 nm, which is slightly different from the value that we observe. 57 This difference may be related to a different octahedral speciation in our system, which may combine EG and other ligands available in the DES mixture. Moreover, the blue colour was maintained in both systems when heated at 50 1C, in which the electrochemical experiments were performed, indicating that Co 2+ tetrahedral coordination remained at 50 1C.…”

Recycling of spent lithium-ion batteries for a sustainable future: recent advancements

“…, Cd) by efficient electrodeposition. Since the conventional electrochemical system requires a high cell potential ( E cell ) and may cause environmental problems, Kong et al 197 developed a novel electrochemical redox system for simultaneous recovery of both cathode and anode materials from spent batteries. The novel system was effective for the recovery of valuable metals from spent LIBs.…”

Co-recovery of spent LiCoO2 and LiFePO4 by paired electrolysis

“…[22][23][24] As an adjustable and eco-friendly technique, electrochemical technologies have recently been researched. [25][26][27][28] However, different electrochemical methods for recycling LIBs have different emphases. 29 Several types of lithium battery cathode materials have been recovered by electric field-driven delithium in NaCl solution.…”

“…31 Meng et al used the electrochemical reduction method to leach Li and Co by using 1.25 mol L −1 of malic acid at 8 V. 32 Recently, research has demonstrated that the spent cathode and anode materials can be recovered in a low energy consumption method through the strategy of electrochemical oxidation. 27 However, the strategy only uses a half-reaction in one electrolytic cell, while the other half-reaction produces by-products. 14,[33][34][35] The simultaneous utilization of electrochemical reactions at both the cathode and anode in one electrolytic cell is beneficial for saving chemicals and reducing energy consumption, which is of great interest to explore.…”