A Panoramic Review on Intercalation-Based Electrochemical Lithium Extraction From Salt Lakes: Mechanisms, Challenges,...

Area of Science:

• Electrochemistry
• Hydrometallurgy
• Materials Science

Background:

• Lithium extraction from salt-lake brines is crucial for sustainable energy.
• Electrochemical methods offer an efficient and low-energy alternative to traditional techniques.
• Existing methods face challenges in selectivity, stability, and industrial scalability.

Purpose of the Study:

• To systematically review the evolution of electrochemical lithium extraction.
• To establish a theoretical framework linking material properties to electrochemical performance.
• To analyze challenges and propose optimization strategies for industrial application.

Main Methods:

• Review of ion-pump and rocking-chair electrochemical lithium extraction configurations.
• Analysis of theoretical frameworks connecting material structure, interfacial dynamics, and electrochemical pathways.
• Examination of electrode modification and system-level engineering strategies.

Main Results:

• Electrochemical lithium extraction demonstrates high efficiency and low energy consumption.
• Key challenges include selective extraction from high-impurity, low-concentration brines, long-term stability, and industrial current density.
• Optimization strategies involve electrode modification and system-level engineering.

Conclusions:

• Electrochemical lithium extraction is a promising sustainable technology for lithium recovery.
• Bridging the gap between lab metrics and industrial applicability requires further research in electrode design and process engineering.
• This review provides a roadmap for accelerating industrial-scale implementation.