Reduced graphene oxide paper by supercritical ethanol treatment and its electrochemical properties

► Treatment in supercritical ethanol as a green route was used to reduce the prefabricated graphene oxide paper. ► The reduction of the graphene oxide paper was confirmed by various characterization methods. ► The reduced graphene oxide paper, with a specific capacity of 89 mAh/g, can be used as a binder-free anode for lithium battery.