采用水热法,在200℃,S/Mo摩尔比为4.3∶1的条件下,水热反应24 h,合成出由MoS2纳米片堆积而成的花墙状多级纳米结构.利用X射线粉末衍射仪(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)和X射线光电子能谱仪(XPS)等对产物物相和形貌进行了表征.结果表明,MoS2纳米片厚度约为10 nm,花墙状多级纳米结构可达十至数十微米,具有较好的均匀性.MoS2多级纳米结构作为锂离子电池负极材料,在高电流密度下表现出良好的循环稳定性.
MoS2 hierarchical nanostructure was synthesized by hydrothermal method under the molar ratio of S/Mo = 4. 3 : 1 at 200℃ for 24 h. The synthesized product was characterized by X-ray powder diffractometer ( XRD), field emission scanning electron microscope ( SEM ), transmission electron microscope (TEM) and X-ray photoelectron spectrometer(XPS). The results show that the product presents uniform tracery-wall-like hierarchical nanostructure, which is assembled by some nanoplates with the thickness of ca. 10 nm, and its width can reach several micrometers to tens of micrometers. As lithium-ion battery anode material, the MoS2 hierarchical nanostructure exhibit superior excellent cycling stability at high current density.