Self-assembly- and Preshaping-assisted Synthesis of Molybdenum Carbide Supported on Ultrathin Nitrogen-doped Graphitic Carbon Lamellas for the Hydrogen Evolution Reaction

Abstract

Herein, we report a self-assembly and preshaping strategy for the controllable synthesis of highly dispersed Mo2C nanoparticles supported on porous graphitic carbon lamellas. This simple but effective method prevents the serious overlapping of carbon and excessive growth of Mo2C and endows Mo2C/C with a 2 D lamellar structure even after high-temperature carburization. The constructed Mo2C/C-lamellas exhibits higher activity in the hydrogen evolution reaction than traditional bulk Mo2C/C and shows long-term stability. This self-assembly and preshaping assisted carburization method represents a rational strategy for the preparation of robust carbon composite materials with hierarchically ordered structures, especially high melting points, and a high tendency to undergo aggregation.