Reduced graphene oxide anchoring CoFe2O4 nanoparticles as an effective catalyst for non-aqueous lithium–oxygen batteries

Abstract

CoFe₂O₄ nanoparticles were uniformly anchored on reduced graphene oxide by a facile solvothermal method. The obtained CoFe₂O₄/reduced graphene oxide (CoFe₂O₄/rGO) hybrid was employed as catalyst for Li–O₂ batteries. It could effectively lower the ORR (oxygen reduction reaction) and OER (oxygen evolution reaction) overpotentials of the batteries and deliver a large capacity of 12 235 mA h g_rGO⁻¹ (2116 mA h g_hybrid⁻¹). It also exhibited high cyclic stability.