CuBr assisted synthesis of bilayer graphene as anode material for lithium-ion batteries

In this paper, we introduce an innovative method to synthesize graphene via chemical reduction of graphite oxide (GO) with the assistance of CuBr. The reduced material is examined by high-resolution transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy analysis (XPS). It is found that the graphene sheet process a thin winkled voile-like structure and fewer layers (∼2 layers). When used as anode material for lithium-ion batteries (LIB), the reduced GO (r-GO) based on this reducing method delivers a high reversible capacity of 1259 mA h g−1 at a current density of 100 mA g−1 and fine cycle performance. The increasing current density of r-GO with the growth of cycle numbers revealed the peculiar electrochemical performance.