High‐Power Supercapacitive Properties of Graphene Oxide Hybrid Films with Highly Conductive Molybdenum Disulfide Nanosheets

By introducing a graphene oxide (GO) sheet as a phase stabilizer and a mechanical supporter, MoS 2 /GO hybrid films consisting of a high concentration of distorted 1T‐MoS 2 are successfully fabricated through a post‐annealing process in air with the form of a restacked film. After the annealing process, the MoS 2 nanosheets undergo direct binding with the oxygen functional groups of GO, maintaining their highly conducting 1T phase and leading to distorted 1T‐MoS 2 or 1T′‐MoS 2 . A hybrid film‐based supercapacitor reveals significantly enhanced electrochemical properties, such as an ultrahigh volumetric power density (≈207 W cm −3 ), high volumetric capacitance (≈380 F cm −3 at 10 mV s −1 ), superior rate capability, and a semi‐permanent cycle life (95 % retention after 10 000 cycles) in an aqueous electrolyte.