KCS

Despite the pulverization and unstable solid-electrolyte interface (SEI) challenges, silicone is yet a promising high capacity anode material because of its high gravimetric capacity (~4200 mAh/g). Advancements in nano-architecture Si electrodes still remain a challenge in achieving long cycling life. To overcome these issues, we synthesized OH-doped graphene quantum dots (OH-GQDs) wrapped with Si nanoparticles (50 nm) compensates the volume expansion and conductivity between neighboring nanoparticles. The introduction of few layers in graphene quantum dots favors in lithium insertion and improved the stability of SEI. For characterization FTIR, HR-XPS, XRD and electrochemical testing was performed. This nano-architecture significantly improved the structural stability and conductivity, which could be used as anode material for lithium secondary batteries.