Facile synthesis of Li4Ti5O12/Graphene nanocomposites for high performance lithium-ion batteries via a thermal-decomposition reduction in air

摘要

A facile and effective synthetic method via a thermal-decomposition reduction in air has been employed to synthesize Li4Ti5O12(LTO)/Graphene (RGO) nanocomposites as a promising anode material for high performance lithium-ion batteries. The structural, morphological, and electrochemical characteristics of the as-prepared LTO/RGO nanocomposites have been investigated with X-ray diffraction (XRD), X-ray photoelectric spectroscopy (XPS), scanning electron microscopy (SEM), infrared spectrum (IR), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS), respectively. It is found that graphite oxide (GO) is reduced at 300 degrees C in air. LTO/RGO exhibits higher capacity and better cycling performance than LTO. The superior electrochemical performances of the LTO/RGO electrode are attributed to the excellent electronic conductivity and the positive synergistic effect between RGO and LTO nanoparticles.