SnO2 nanorods grown on MCMB as the anode material for lithium ion battery

SnO2 nanorods grown on MCMB as the anode material for lithium ion battery:

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hemical precipitation and hydrothermal reaction were adopted to prepare the SnO2 nanorods/MCMB composite. Firstly Mesophase carbon micro beads (MCMB) were treated by the mixture of concentrated sulphuric acid and nitric acid, and then deposited with a little amount of SnO2 though chemical precipitation to form the primitive SnO2/MCMB composite. In hydrothermal condition and at certain concentration of Na2SnO3, such primitive composite turned into the SnO2 nanorods/MCMB composite eventually. SEM figures showed that SnO2 nanorods grow on the surface of MCMB extensively; TEM and XRD characterization indicated SnO2 nanorods presenting good single crystalline structure with 50nm in diameter and 400-500nm in length. The following electrochemical performance showed that the final composite exhibited initial discharge capacity of 1321.25mAh·g-1. Reversible capacity of 505.8mAh·g-1 was observed after 50 discharge/charge cycles at the constant current density of 100 mA·g-1.