Scalable Fabrication of Si-Graphene Composite as Anode for Li-ion Batteries

A facile and scalable method is reported to fabricate Si-graphene nanocomposite as anode material for Li-ion batteries (LIBs) with high capacity retention performance. The electrode showed an initial discharge of 1307 mAh g?1 at a current rate 0.1C. At the 25th cycle, retained 1270 g?1, excellent 97%. 50th still 89%. improved compared Si attributed mechanical flexibility graphene that compromises volume expansion during lithiation/delithiation process. electrochemical impedance measurement further confirms enhanced electrical conductivity denser solid-electrolyte-interface electrode. This fabrication approach cost-effective easy scale up known techniques, making it promising candidate commercializing Si-based LIBs.