Insights into the coordination enhanced leaching mechanism of spent lithium-ion batteries cathode materials

A systematic review of efficient recycling for the cathode materials of spent lithium-ion batteries: process intensification technologies beyond traditional methods

“…2d. Gu et al 49 revealed the coordination-enhanced leaching mechanism of LIB cathode materials (LiCoO 2 ) by comparing the thermodynamics and kinetics of sulfuric acid coupled with l -ascorbic acid (VC) and hydrochloride acid coupled with VC systems. Fig.…”

Comprehensive recycling of spent lithium-ion battery cathodes and anodes via a targeted electrochemical redox process

“…The leaching efficiency of metals was calculated by dissolving the residue at 363 K for 1 h according to eqn (S5). † With the spent cathodes and anodes enwrapped in the "sandwich-type" structure (titanium mesh-cathode/anode-titanium mesh) working as the cathode (WE) and anode (CE), respectively, diluted HCl working as the electrolyte, anion exchange membrane working as the separator, the transition metal ion (Co 3+ ) in the cathode was reduced, releasing valuable metals ions (eqn (1)) into the cathode chamber, [34][35][36][37] while the current collector (Cu foil) in the anode was oxidized, releasing Cu 2+ (eqn (2) and ( 3)) into the anode chamber. 38 The targeted electro-oxidation of Cu foil not only liberated the anode active materials from the current collector but also suppressed the OER on the anode.…”

Progress and prospect on the recycling of spent lithium‐ion batteries: Ending is beginning

“…The speed and mechanism of leaching process are related to the leaching kinetics, which reveals the factors affecting the leaching speed and the control steps. [ 68 ] The study of leaching kinetics is of great significance to improve the comprehensive recovery rate and optimize the process. Therefore, to improve the leaching efficiency, various influencing factors should be considered including the surface area of the spent electrode material, the leaching temperature and pressure, and leaching agent selection.…”