Engineering Multi-field-coupled Synergistic Ion Transport System Based on the Heterogeneous Nanofluidic Membrane for High-Efficient Lithium Extraction

Abstract

Highlights The first construct of a multi-field-coupled synergistic ion transport system (MSITS) in Li+ extraction is proposed. Effectively suppress the ion concentration polarization effect of the ion-enrichment zone at the membrane interface. The MSITS equipped with heterogeneous membrane exhibited outstanding separation performance with Li+ flux of 367.4 mmol m−2 h−1 and Li+/Co2+ selectivity of 216,412, outperforming previous reports.

Keywords

• Nanofluids
• Ion separation
• Lithium extraction
• Synergistic effect
• Spent lithium-ion battery