Anchoring Sb6O13 Nanocrystals on Graphene Sheets for Enhanced Lithium Storage

摘要

Sb6O13/reduced graphene oxide (Sb6O13/rGO) nano composite was synthesized by the solvothermal method using Sb2O3 and graphene oxide as raw material. On the basis of the physical and electrochemical characterizations, Sb6O13 nanocrystals of 10-20 nm size were uniformly anchored on rGO sheets, and the nanocomposite displayed a large reversible specific capacity of 1271 mA h g(-1) and an excellent cyclability of 1090 mA h g(-1) after 140 cycles at 100 mA.g(-1) when proposed as a potential anode material for lithium ion batteries, emphasizing the advantages of anchoring of Sb6O13 nanocrystals on rGO sheets for the maximum utilization of electrochemically active Sb6O13 and rGO for lithium storage.