SnO_2@graphene nanocomposites as anode materials for Na-ion batteries with superior electrochemical performance

摘要

An in situ hydrothermal synthesis approach has been developed to prepare SnO_2@graphene nanocomposites. The nanocomposites exhibited a high reversible sodium storage capacity of above 700 mA h g~(-1) and excellent cyclability for Na-ion batteries. In particular, they also demonstrated a good high rate capability for reversible sodium storage.