Citrate-EDTA-H₂O₂ buffering leaching solution for Ni/Co/Mn recovery from spent lithium-ion battery black mass.

ABSTRACT: The increasing global demand for lithium-ion batteries necessitates the development of environmentally sustainable recycling technologies for critical metal recovery. This study presents a novel citrate-EDTA buffered leaching system for recovery of Li, Co, Ni, and Mn from spent LIB cathode materials with mixed NMC/LiCoO₂ composition. The developed approach addresses limitations of conventional citric acid leaching through synergistic combination of citrate buffer (pH 4-6), Na₂EDTA as complexing agent, and H₂O₂ as reducing agent under mild conditions (50 °C). Thermodynamic analysis using Pourbaix diagrams demonstrated that the citrate-EDTA system significantly enhances metal solubility by forming stable chelate complexes and shifting redox boundar

SUBMITTER: Abdimomyn S 

PROVIDER: S-EPMC12557716 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature