Lightweight Carbon-Metal-Based Fabric Anode for Lithium-Ion Batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Traditional lithium-ion battery electrodes manufactured via slurry casting exhibit limitations in pore network percolation, electronic connectivity, and mechanical stability.
• These limitations lead to poor conductivity and mechanical integrity during cycling, ultimately causing battery degradation.

Purpose of the Study:

• To develop advanced electrode materials for lithium-ion batteries with improved performance and stability.
• To address the limitations of conventional slurry-cast electrodes by fabricating novel carbon-iron fabrics.

Main Methods:

• Fabrication of trichome-like carbon-iron fabrics (CMFs) using electrospinning and pyrolysis.
• Electrode performance evaluation through half-cell and full-cell testing against standard lithium nickel manganese oxide (LNMO) cathodes.

Main Results:

• CMF electrodes demonstrated significantly enhanced high-rate capacity (10C and above) compared to slurry-cast Fe2O3 and graphite electrodes.
• The CMFs exhibited superior stability and mechanical integrity during electrochemical cycling.
• The developed electrodes are free-standing and lightweight.

Conclusions:

• The novel carbon-iron fabric (CMF) electrode architecture offers a promising advancement over traditional slurry-cast electrodes for lithium-ion batteries.
• CMFs provide enhanced electrochemical performance, particularly at high charge/discharge rates.
• Future research should focus on scaling CMFs for practical applications in pouch and cylindrical battery cells.