Electrochemical Lithium Recovery Device

Device for Lithium Recovery from Spent Batteries Using Flow-Electrode Capacitive Deionization

This technology is a continuous process system based on Flow-Electrode Capacitive Deionization (FCDI) that selectively extracts lithium ions from spent battery active material leachate (first flow-electrode module) and recovers them through electrical repulsion (second flow-electrode module).

Conventional lithium recovery methods for spent batteries, such as pyrometallurgical and hydrometallurgical processes, have technical limitations, including high energy consumption due to high-temperature treatment, environmental pollution from the use of large amounts of chemicals, and complex post-processing steps.

By utilizing a multi-stage flow-electrode module equipped with flow electrodes containing manganese oxide adsorbents and ion-exchange membranes (cation/anion/bipolar), this technology provides a practical solution for next-generation resource circulation and recycling. It functions as a continuous electrochemical device that selectively extracts and recovers lithium ions and recycles sulfate ions using only electrical attraction and repulsion, without the need for high-temperature processes.

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Key Features:

• First flow-electrode module that selectively extracts lithium ions from a target solution containing spent battery active materials using electrical attraction
• Second flow-electrode module that recovers the lithium ions extracted by the first flow-electrode module using electrical repulsion
• Configuration for selectively extracting and recovering lithium ions using a flow-electrode capacitive deionization method
• Electrochemical lithium recovery device for the selective extraction and recovery of lithium from spent battery active material leachate

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