▎ 摘　　要

In this study, a reduced graphene oxide-supported Na3.12Fe2.44(P2O7)(2)/C nanocomposite was successfully synthesized by a sol-gelmethod and a subsequent heat-treatment process. Not only did the composite undergo a highly reversible electrochemical reaction, but it also exhibits superior rate capability and long-term cyclic stability as a Na-ion battery cathode.