An efficient CoS2/CoSe2 hybrid catalyst for electrocatalytic hydrogen evolution

The CoS₂/CoSe₂ hybrid catalyst exhibits superior HER electrocatalytic activity as well as excellent electrochemical durability. CoSe₂/DETA nanobelts not only afford an interconnected conducting network, but also demonstrate superior HER electrocatalytic activity. High dispersion and smaller CoS₂ nanoparticles on the surface can provide abundant active sites for the HER.