Shape-controllable synthesis of Mo2C nanostructures as hydrogen evolution reaction electrocatalysts with high activity

In this communication, for the first time, we demonstrate the shape-controllable synthesis of molybdenum carbide (Mo 2 C) nanowires (NWs) and nanosheets (NSs) via direct pyrolysis of their MoO x /p-phenylenediamine hybrid precursors under Ar. We further demonstrate the use of such carbides as a highly active hydrogen evolution reaction electrocatalyst with good durability in acidic solution. It also suggests that the Mo 2 C NWs exhibit superior activity and durability over the Mo 2 C NSs.