Facile fabrication of carbon fiber skeleton structure of MoS2 supported on 2D MXene composite with highly efficient and stable hydrogen evolution reaction

Development of advanced electrocatalytic materials is the crucial technology in electrolytic water to produce clean hydrogen energy. Herein, we have developed a highly efficient and stable hydrogen evolution reaction (HER) electrocatalyst MoS2/Ti3C2@CNFs hybrid material, which obtained by sulfur vapor assisted graphitization of Mo/Ti3C2@PAN precursor. Conductive Ti3C2 MXene and carbon nanofiber (CNFs) were applied to construct the "plane-line" skeleton structure to effectively prevent the stacking of Ti3C2 flakes, increase the loading content of MoS2, enlarge the exposure active edge sites of MoS2 and accelerate charger transfer of MoS2. MoS2/Ti3C2@CNFs exhibits excellent electrocatalytic activity and high stability in HER compared to pure MoS2 and MoS2/Ti3C2 nanostructure. The excellent performance of MoS2/Ti3C2@CNFs in HER is attributed to the special characteristics of the skeleton structure and the strong interface coupling between MoS2 and Ti3C2 MXene. Our findings provide a viable approach for designing advanced nanostructures for catalysis, electronic devices, and other potential applications.