Co3Fe7/Mo2C co-embedded in N-codoped porous carbon with accelerated kinetics for OER and HER

Multicomponent metal/N-doped porous carbon with controllable structure is considered to be a promising candidates for efficient oxygen evolution and hydrogen evolution reaction. Herein, Mo-Co-Fe-MOF was preapred by a simple hydrothermal method, followed by high-temperature pyrolysis treatment to obtain the Mo-Co-Fe/NC. Benefit from the advantages of hierarchical structure and multicomponent, the Mo-Co-Fe-1.0/NC shows an overpotential of 257 and 320 mV to achieve the current density of 10 and 100 mA cm−2 for OER in alkaline KOH solution, respectively. In addition, the Mo-Co-Fe-1.0/NC exhibits the accelerated reaction kinetics during HER and OER reactions. The results provide a new perspective for design and preparation as well as kinetic characteristics of efficient OER and HER catalysts, which is expected to be used in the field of energy storage and conversion.