A facile way to fabricate MoO ₃ /graphene composite anode for lithium ion battery

MoO ₃ is capable of Li? ⁺ insertion/extraction in excess of 6 Li ⁺ per formula unit, resulting in a significantly reversible capacity. Recently, chemically modified graphene materials have been used to form hybrid materials with SnO ₂, Fe ₂O ₃, and Mn ₃O ₄ in attempts to improve electrode capacity and cycling stability. However, an anode combining MoO ₃ with graphene has never been reported. MoO ₃/graphene composite was prepared through a facile two-step synthesis by homogeneous coprecipitation and subsequent reduction of the graphite oxide with hydrazine. The synergic effect of graphene and MoO ₃ improves the electrochemical properties, like cycling performance and rate capability. SEM and TEM images show that MoO ₃ uniformly dispersed on the surface of graphene. The synthesis approach presents a promising route to produce large amount of high performance electrode materials for Lithium ion batteries.