Synthesis and Electrochemical Properties of Fe2O3/rGO Nanocomposite Anode Materials

Abstract

The Fe2O3/rGO nanocomposites were prepared through a facile approach combining sol-gel synthesis with thermal reduction. The XRD, SEM, and electrochemical performance tests were used to study the relationship between the physical character and the electrochemical properties of the electrode material. As the anode material, the Fe2O3/rGO nanocomposites delivered excellent lithium storage properties, stable cycle performance, and high rate capability (707 mAh g-1 of 100 cycles).It is demonstrated that the preparation of Fe2O3/rGO nanocomposites structured can effectively alleviate the particle pulverization caused by volume expansion, effectively shorten the diffusion distance of lithium ions, prevents the aggregation of Fe2O3 with the graphene, and improve the cycle stability of the electrode. Meanwhile, the incorporation of the Fe2O3 particles suppressed the stack of graphene layer.