Low-Cost Synthesis of Porous Silicon via Ferrite-Assisted Chemical Etching and Their Application as Si-Based Anodes for Li-Ion Batteries

A novel low-cost synthesis route of porous Si materials is developed via ferrite-assisted chemical etching of Si instead of noble metal-assisted chemical etching. The obtained porous Si/C and porous Si/C/ferrite materials used as anodes in Li-ion batteries exhibit good electrochemical performance.