Carbon-coated SnO 2 riveted on a reduced graphene oxide composite (C@SnO 2 /RGO) as an anode material for lithium-ion batteries.

The research on graphene-based anode materials for high-performance lithium-ion batteries (LIBs) has been prevalent in recent years. In the present work, carbon-coated SnO 2 riveted on a reduced graphene oxide sheet composite (C@SnO 2 /RGO) was fabricated using GO solution, SnCl 4 , and glucose via a hydrothermal method after heat treatment. When the composite was exploited as an anode material for LIBs, the electrodes were found to exhibit a stable reversible discharge capacity of 843 mA h g -1 at 100 mA g -1 after 100 cycles with 99.5% coulombic efficiency (CE), and a specific capacity of 485 mA h g -1 at 1000 mA g -1 after 200 cycles; these values were higher than those for a sample without glucose (SnO 2 /RGO) and a pure SnO 2 sample. The favourable electrochemical performances of the C@SnO 2 /RGO electrodes may be attributed to the special double-carbon structure of the composite, which can effectively suppress the volume expansion of SnO 2 nanoparticles and facilitate the transfer rates of Li + and electrons during the charge/discharge process.