▎ 摘　　要

A ZnFe2O4-reduced graphene oxide (ZnFe2O4-RGO) hybrid has been successfully synthesized through a facile syn-graphenization strategy. In this preparation procedure, N2H4 center dot H2O works as both a base source and a reductant, and the reduction of graphene oxide (GO) into RGO is accompanied by the formation of ZnFe2O4. In comparison with bare ZnFe2O4, the ZnFe2O4-RGO hybrid shows ultrahigh cycling stability and rate capability as an anode material for lithium ion batteries. The cycling capacity of the ZnFe2O4-RGO hybrid at the 100th cycle is considerably enhanced to 1025 mA h g(-1), compared with only 166 mA h g(-1) for bare ZnFe2O4. The rate performance can also be significantly improved to 800 mA h g(-1) at the current density of 1000 mA g(-1). The much better cycling stability and rate capability can be largely attributed to the well dispersed conductive RGO and the tight binding between ZnFe2O4 and RGO, which is a benefit of the subtle syn-graphenization strategy. In addition, the effects of RGO content on the electrochemical performance are presented.