Molybdenum Disulfide/Reduced Graphene Oxide–Carbon Nanotube Hybrids as Efficient Catalytic Materials in Dye‐Sensitized Solar Cells

Abstract

AbstractA hybrid material has been fabricated by combining MoS2/reduced graphene oxide (RGO) nanocomposites with carbon nanotubes (CNTs) (designated MoS2/RGO‐CNTs) through facile electrophoretic deposition. The MoS2/RGO‐CNTs hybrid benefits from the advantages of both MoS2/RGO and CNTs as a counter electrode (CE) in dye‐sensitized solar cells (DSCs). According to a series of electrochemical results, the incorporation of conductive networks of CNTs provides additional pathways for electron transport in the MoS2/RGO‐CNTs hybrid, which increases the charge‐transfer rate at the CE/electrolyte interface. As a result, the MoS2/RGO‐CNTs CE exhibits greatly improved electrocatalytic activity compared with that of MoS2/RGO alone. A DSC incorporating the MoS2/RGO‐CNTs CE achieves impressive cell performance of 7.46 %, which is higher than those measured with DSCs incorporating MoS2/RGO CE (6.82 %) and Pt CE (7.23 %).