Leaching of valuable metals from cathode active materials in spent lithium-ion batteries by levulinic acid and biological approaches.

ABSTRACT: Recycling of valuable metals from spent lithium-ion batteries (LIBs) is of paramount importance for the sustainable development of consumer electronics and electric vehicles. This study comparatively investigated two eco-friendly leaching methods for recovering Li, Ni, Co, and Mn from waste NCM523 (LiNi_0.5Co_0.2Mn_0.3O₂) cathode materials in spent LIBs, i.e., chemical leaching by a green organic solvent, levulinic acid (LA) and bioleaching by an enriched microbial consortium. In chemical leaching, mathematical models predicting leaching efficiency from liquid-to-solid ratio (L/S; L/kg), temperature (°C), and duration (h) were established and validated. Results revealed that LA of 6.86 M was able to achieve complete leaching of all target metals in

SUBMITTER: Jiang T 

PROVIDER: S-EPMC10172919 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature