  Electrochemical reactions for hydrogen and hydrogen peroxide production are
essential for energy conversion to diminish energy crisis, but still lack
efficient electrocatalysts. Development of non\-noble metal bifunctional
electrocatalysts for hydrogen evolution and 2e oxygen reduction reaction to
ease reaction kinetics is a challenging task. Integration of single components
by employing easy strategies provides a key\-step towards the realization of
highly active electrocatalysts. In this vein, MoSe2 owns catalytic active sites
and high specific surface area but suffers from insufficient conductivity and
high catalytic performance that noble\-metals provide. Herein, MoSe2 was used
as a platform for the incorporation of manganese metallated porphyrin. The
developed hybrid, namely MoSe2\-MnP, by the initial metal\-ligand coordination
and the subsequent grafting with MnP was fully characterized and
electrochemically assessed. The bifunctional electrocatalyst lowered the
overpotential toward hydrogen evolution, improved reaction kinetics and charge
transfer processes and was extremely stable after 10000 ongoing cycles.
Simultaneously, rotating ring disk electrode analysis showed that oxygen
reduction proceeds through the 2e pathway for the selective production of
hydrogen peroxide with a high yield of 97 percent. The new facile modification
route can be applied in diverse transition metal dichalcogenides and will help
the development of new advanced functional materials.
