MoO2纳米棒的水热制备及电化学性能研究

MoO2 nanorods were synthesized by hydrothermal method using ethyl alcohol as reducing agent. The structure and nanomorphology were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM). The electrochemical performance was characterized by galvanostatic discharge-charge and cyclic voltammetry (CV) test. The results indicate that the hydrothermal products are monoclinic rod-like MoO2 with the length of 200 nm and the diameter of 50 nm. Under the current density of 0.1 mA/cm2 and the mass ratio of MoO2 to acetylene black of 6:4, the rod-like MoO2 shows high specific capacity as much as 600 mAh/g in the first discharge process and remains above 328 mAh/g in the 10th cycle. CV test shows that the nanorods have a highly reversible electrochemical property which owns to the small size and high specific area.