A porous Si@C nano-composite is prepared through deriving both Si and C from biomass for high-performance Li-ion batteries.
A bimodal porous Si/Ag composite is easily fabricated by etching an SiAgAl alloy in HCl solution, and performs excellently for lithium storage.
A Si@Ni inverse opal structure fabricated by using an inexpensive electrodeposition method and a colloidal crystal template exhibits high capacity, cyclability, and rate-performance as an anode for Li ion batteries.