Achieving high capacity hybrid-cathode FeF₃@Li₂C₆O₆/rGO based on morphology control synthesis and interface...

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Lithium oxalate (Li2C6O6) is a promising high-capacity cathode material.
• Poor cycling stability due to electrolyte dissolution limits its practical application.

Purpose of the Study:

• To enhance the cycling performance and rate capability of Li2C6O6 cathodes.
• To address the dissolution issue of Li2C6O6 in electrolytes.

Main Methods:

• Morphology control was used to synthesize spherical Li2C6O6 particles.
• Reduced graphene oxide (rGO) was combined with Li2C6O6.
• An FeF3 coating was applied for interface engineering.

Main Results:

• The FeF3 coating and rGO effectively inhibited the dissolution of Li2C6O6.
• The modified cathode exhibited significantly improved cycling stability.
• Enhanced rate performance was observed compared to unmodified Li2C6O6.

Conclusions:

• Interface engineering is a viable strategy to overcome the limitations of Li2C6O6 cathodes.
• The developed Li2C6O6/rGO composite with FeF3 coating shows potential for advanced lithium-ion batteries.