One-dimensional Ni2P/Mn2O3 nanostructures with enhanced oxygen evolution reaction activity

Nickel-based transition metal phosphides have been widely flourishing as oxygen evolution reaction (OER) electrocatalysts. In this study, a new catalyst Ni2P/Mn2O3 nanofibers with the advantages of ultra-high electrochemical active area were successfully synthesized. We explored effective strategies that are constructing one-dimensional nanostructures and composite oxides to promote the electrocatalytic performance of transition metal phosphides. The Ni2P/Mn2O3 nanofibers only require a low overpotential of 280 mV to deliver a current density of 10 mA cm-2 in 1 M KOH for oxygen production. As a result, it is worthily mentioned that the activity of Ni2P/Mn2O3 nanofibers is virtually unchanged after 2000 cycles of voltammetry measurements with a stable nanostructure. This research provides a feasible solution for the design and realization of nanostructured electrocatalysts for the enhancing performance of the OER process.