Colloidally synthesized MoSe2/graphene hybrid nanostructures as efficient electrocatalysts for hydrogen evolution

Abstract

Uniform 3D MoSe₂ layered nanostructures grown on graphene nanosheets to form high quality MoSe₂/graphene hybrid nanostructures were synthesized by using a facile wet chemistry strategy. Owing to its unique structure, the as-harvested MoSe₂/graphene hybrid exhibited excellent electrocatalytic activity in the hydrogen evolution reaction, i.e. it had a low onset overpotential of 125 mV, a small Tafel slope of 67 mV per decade and outstanding stability.