Carbon framework microbelt supporting SnO_x as a high performance electrode for lithium ion batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Developing high-performance electrode materials is crucial for advancing lithium ion batteries (LIBs).
• Tin oxide (SnO_x)-based materials are attractive anode candidates due to their high theoretical capacity.
• Challenges remain in improving their cycling stability and rate capability for practical applications.

Purpose of the Study:

• To synthesize a novel carbon framework microbelt supporting SnO_x nanoparticles (CFM-SnO_x) for LIBs.
• To evaluate the electrochemical performance of the CFM-SnO_x electrode as an anode material.
• To demonstrate a facile preparation method for high-performance LIB anodes.

Main Methods:

• Facile electrospinning technology to create carbon framework microbelts.
• Annealing treatment to incorporate SnO_x nanoparticles onto the carbon framework.
• Electrochemical testing to assess capacity, rate performance, and cycling stability.

Main Results:

• The CFM-SnO_x electrode achieved a high reversible capacity of 768 mAh g^-1 at 0.2 A g^-1 after 200 cycles.
• Excellent rate capability was observed, with a capacity of 535 mAh g^-1 at a high current density of 3.2 A g^-1.
• The material exhibited superior electrochemical performance, indicating good cycling stability.

Conclusions:

• The facile synthesis of CFM-SnO_x via electrospinning and annealing is effective.
• CFM-SnO_x demonstrates significant potential as a competitive anode material for next-generation lithium ion batteries.
• The developed material offers a promising solution for enhancing energy storage performance.