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.