LAUSR

Electrochemical lithium extraction from salt lakes using LiMn2O4 (LMO) presents an eco‐friendly, highly controllable, and efficient method. However, its practical application is limited due to its structure instability and manganese dissolution in water. Herein, a high‐performance LMO coated with ≈3.5 nm thickness lithiated Nafion (Li‐Nafion) for electrochemical lithium extraction is reported. The Li‐Nafion coating constructs a fast lithium‐ion transport pathway and enhances the hydrophilicity of the LMO particles, promoting charge transfer and improving rate capability. Thereby, an enhanced lithium extraction capacity of 4 mmol g−1 is achieved. Importantly, the coating significantly inhibits Mn loss in LMO, resulting in significantly improved cyclic stability, with a capacity retention rate of 96% after 50 cycles. Furthermore, the Li‐Nafion modified LMO effectively extracts lithium electrochemically in Zabuye salt lake, showcasing practical potential.