▎ 摘　　要

Three-dimensional molybdenum disulfide (MoS2) nanosheets grew on reduced graphene oxide/single-walled carbon nanotubes (GNTs). The resulting reduced graphene oxide/single-walled carbon nanotube/MoS2 (GNT-M) hybrid nanocomposites were used as efficient counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). The microstructural details of the nanohybrids were characterized by transmission electron microscopy (TEM) and field emission scanning electron microscopy (SEM), which showed an intertwined structure with an abundance of exposed active sites on the edge. X-ray diffraction and Raman spectroscopy were used to further confirm the binding of MoS2/GNT and the nanostructures. The composite electrode-based DSSCs with GNT-M10 showed a maximum power conversion efficiency of 8.01%, which is higher than that of a Pt CE (7.21%). Furthermore, GNT-M10 performed stably in the 1 week continuous test. Such excellent photoelectric performance can be attributed to the fact that MoS2 nanosheets with a 3D structure have more exposed active sites to promote the reduction and regeneration of I-3(-) ions and the superior electrical conductivity of graphene and single-walled carbon nanotubes.