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...
“…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.…”
Co(ii) speciation is reported for two ethylene glycol : choline chloride (4.5 : 1) systems depending on the cobalt source using several spectroscopic techniques (e.g. UV-Vis, NMR, EPR, FTIR) in combination with molecular dynamics simulations.
“…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.…”
Co(ii) speciation is reported for two ethylene glycol : choline chloride (4.5 : 1) systems depending on the cobalt source using several spectroscopic techniques (e.g. UV-Vis, NMR, EPR, FTIR) in combination with molecular dynamics simulations.
“…, 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.…”
Section: Spent Lib Recycling By the Electrometallurgical Processmentioning
A critical review of the recent developments in the recycling of spent Li-ion batteries using five major technologies (direct recycling, pyrometallurgy, hydrometallurgy, bioleaching and electrometallurgy) and evaluation of their sustainability.
“…[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.…”
Section: Introductionmentioning
confidence: 99%
“…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.…”
A paired electrolysis approach for recovering valuable components from LiCoO2 and LiFePO4 has been developed. This process renders an efficient and clean leaching process with reduced energy input and secondary waste emissions.
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