Silicon Carbide-Based Anodes for Lithium-Ion Batteries: A Green View

Area of Science:

• Materials Science
• Electrochemistry
• Sustainable Energy

Background:

• Silicon carbide (SiC) is transitioning from an inert material to a viable anode candidate for lithium storage.
• It offers a potential alternative to conventional graphite and silicon anodes in lithium-ion batteries.

Purpose of the Study:

• To review and unify experimental and theoretical findings on SiC's lithiation mechanisms.
• To explore sustainable synthesis routes and green processing for SiC anodes.
• To establish SiC as a practical and sustainable anode for next-generation batteries.

Main Methods:

• Comprehensive review of experimental data and theoretical predictions.
• Analysis of lithiation, conversion, alloying, and interfacial storage mechanisms in SiC.
• Evaluation of polytype, nanostructure, and defect chemistry effects on SiC performance.

Main Results:

• SiC exhibits diverse lithiation mechanisms including conversion, alloying, and interfacial storage.
• Nanostructure and defect chemistry significantly influence SiC's electrochemical performance.
• Sustainable synthesis routes using biomass and industrial residues are highlighted.
• Aqueous and bioderived binders enhance interfacial stability and green processing.

Conclusions:

• SiC is a viable and sustainable anode material for lithium-ion batteries.
• Rational design principles for nanoscale activation and low-carbon fabrication are identified.
• SiC offers a promising pathway for next-generation battery development.