A novel anode material for lithium-ion batteries: Silicon nanoparticles and graphene composite films

Abstract

Silicon nanoparticles (Si NPs), with tremendous theoretical capacity, have been extensively studied how to be combined with graphene to form stable anodes for lithium-ion batteries. In this paper, a novel approach, chemical vapor deposition (CVD), is proposed to synthesis Si NPs and graphene composite film anode. Si NPs are well dispersed with carbon nanotubes in N methyl pyrrolidone solvent, spin-coated onto Cu foil as substrates to grow graphene, and successively and diversely embedded in graphene film, which is fabricated into anodes for lithium-ion batteries with high capacity of 1115.2 mAh/g. It is demonstrated a possible and promising method to prepare anode material for lithium-ion batteries.