ZnO 超细纳米线阵列的制备及其电化学性能.

Using Zn(NO3)2·6H2O and C6 H12 N4 as raw materials, ZnO nanowire arrays with uniform morphology and size were synthesized by conventional two-step hydrothermal method on carbon fiber cloth. Their crystal structure and morphologies were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and their electrochemical performance was tested by constant current charge-discharge test. The results show that these materials have excellent electrochemical performance. After 150 cycles at the current density of 200 mA/ g, the specific capacity of ZnO nanowire arrays is still about 730 mAh / g, and the Coulomb efficiency remains above 95% . At a high rate of 1 200 mA/ g, the chargedischarge capacity of the products is still about 481 mAh / g, showing good cycle stability and reversibility. The ultrafine ZnO nanowire arrays are a promising anode material for lithium-ion batteries. [ABSTRACT FROM AUTHOR]