| Abstract Scope |
This paper presents a separation-free, purification-free method for directly producing lithium-rich solutions from industrial-grade mixed lithium-ion battery waste. This waste includes components such as lithium iron phosphate, copper foil, aluminum foil, graphite, nickel, cobalt, and manganese. The separation-free aspect eliminates the need for physical powder separation during pretreatment, allowing for the selective leaching of lithium directly from the mixed waste. Additionally, the study explores using acid and hydrogen peroxide to separate lithium from six impurity elements (iron, nickel, cobalt, manganese, copper, and aluminum). Under optimized conditions, the lithium leaching rate exceeds 96%, while all impurity elements remain below 1%. The purification-free aspect is due to the excellent leaching selectivity, resulting in a solution containing almost no other metal ions besides lithium. This method demonstrates strong lithium extraction capability and excellent leaching selectivity, offering promising industrial application prospects while also streamlining processes and reducing costs. |