Electrochemical Lithium‐Ion Recovery from Battery Recycling Process Water

Electrochemical desalination is a promising technology for the selective recovery of Lithium‐ions or other rare ions from spent electronics, contributing to a circular economy. Due to its high‐energy efficiency and selective Lithium‐ion recovery, this method offers a low environmental impact, making it a promising tool for recovering Lithium‐ions from spent batteries. Few studies have examined electrochemical desalination as a tool to recover Lithium‐ions from real spent battery solutions. In this work, solutions obtained from real shredding of Lithium‐iron‐phosphate (LFP) batteries inside a cooling water reservoir were used as a Lithium‐rich source to obtain a high‐purity Lithium‐ion recovery solution. A 96%‐pure Lithium‐ion recovery solution was obtained while only requiring an energy input of 1.10 kWh/kg.