Iron-Based Materials for Advanced Lithium/Sodium-Ion Batteries.

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Lithium-ion (LIBs) and sodium-ion batteries (SIBs) are vital for sustainable energy storage.
• Current graphite anodes have limitations in capacity and sodium storage.
• Iron-based compounds offer high theoretical capacity and abundance but suffer from volume expansion.

Purpose of the Study:

• To review recent advancements in iron-based anode materials for LIBs and SIBs.
• To highlight the electrochemical properties of iron oxides, sulfides, and MOF-derived materials.
• To analyze strategies for mitigating volume expansion in iron-based anodes.

Main Methods:

• Systematic review of recent research on iron-based anode materials.
• Analysis of electrochemical performance data for iron oxides, sulfides, and porous derivatives.
• Evaluation of strategies including nanostructure design, carbon composites, and porous engineering.

Main Results:

• Iron-based compounds exhibit promising electrochemical properties for next-generation batteries.
• Volume expansion remains a significant challenge, leading to capacity decay.
• Various strategies effectively mitigate volume expansion and enhance stability.

Conclusions:

• Iron-based materials are viable alternatives to graphite for LIBs and SIBs.
• Continued research into mitigating volume expansion is essential for practical applications.
• Optimized iron-based anodes will be key for future high-performance rechargeable batteries.