Abstract:In this paper, TiS2 nanosheet porous structure was prepared via a facile two-step process. The precursor, TiH1.924 nanoparticles, were prepared by DC arc-discharge plasma method in the mixed atmosphere of H2 and Ar with titanium bulk as the titanium source, then blended with sublimated sulfur and heated to obtain the TiS2 nanosheet porous structure. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman and so on. XRD and Raman results showed that the as-synthesized TiS2 was fully crystallized. TEM and SEM results showed the nanosheet micro-morphology of the as-synthesized TiS2. The nanosheets grew in any direction to form a porous structure. The TiS2 nanosheet porous structure was used as the anode material of lithium-ion batteries to study its electrochemical lithium storage performance. The first charge-discharge specific capacities under the current density of 500 mA/g were 816.0 mAh/g and 1193.0 mAh/g, respectively. After 50 cycles, the capacity remained a capacity of 550 mAh/g. Even under a high current density of 5 A/g, it still maintained a capacity of 100 mAh/g, showing excellent cycle stability and charge-discharge reversibility.

DOI：10.3969/i.issn.1001-9731.2020.06.004