Uniform deposition of Si and C layers on high surface area graphene produces granules with specific surface area of ∼5 m2·g−1. The anode composed of the nanocomposite particles exhibited specific capacity in excess of 2000 mAh·g−1 at a current density of 140 mA·g−1 and excellent stability for 150 cycles. The low surface area of the composite resulted in an average Coulombic efficiency in excess of 99%.
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