课题组成员石岩在《ACS Sustainable Chemistry & Engineering 》上发表论文Three-Dimensional MoS2-Nanosheet-Based Graphene/Carbon Nanotube Aerogel as a Pt-Free Counter Electrode for High-Efficiency Dye-Sensitized Solar Cells

   3D 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 GNTM10 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 one-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 nanotube.